roof contractor | Choice Roof Contractors | Commercial Roofing Services https://www.choiceroofcontractors.com Nationwide Commercial Roofing Network Mon, 14 Feb 2022 17:01:14 +0000 en-US hourly 1 https://www.choiceroofcontractors.com/wp-content/uploads/2020/11/cropped-favicon-32x32.png roof contractor | Choice Roof Contractors | Commercial Roofing Services https://www.choiceroofcontractors.com 32 32 5 Reasons Ponding Water is a Problem https://www.choiceroofcontractors.com/5-reasons-ponding-water-is-a-problem/ Mon, 14 Feb 2022 16:29:45 +0000 https://www.choiceroofcontractors.com/?p=13616 More than just an eyesore, ponding water is truly a hazardous condition to any flat roof system. Left unchecked, it will ultimately lead to system failure.

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As a trusted, professional roofing contractor, your clients depend on you to advise and direct them. Every bit as important as the quality of your workmanship, your thoughtful direction will make or break your relationship with these professionals.

You may already know the primary problems they may face with their flat roof system. It is your responsibility to impart that knowledge in a clear, concise, and understandable fashion to your current or potential customer. What is the best way to do that? You can share the information on your company social media (think Facebook, LinkedIn, etc.). You can share expertise via your website blog. You can have a flyer made to provide various details. There are many options. What is not an option is failing to support your commercial clients with the information they desperately need to make good financial decisions.

In case you are newer to flat roof systems or are looking for more information about their potential issues, we are sharing the top 5 reasons ponding water on a roof is a problem.

Why is Ponding Water a Concern?

The very nature of a flat or low-slope roof causes ponding water problems. Without a significant slope to remove it from the roof, the water will pond in low areas. Why is this a problem? There are several reasons to consider.

Gravity. If moisture has nowhere else to go, gravity will cause it to seek any tiny imperfection in the roofing system to move downward. This leads directly to leak development and resulting structural damage.

Vegetation. Stagnant water is a petrie dish for the development of mold, mildew and other forms of vegetation. Many of these use a root system, which can penetrate the roofing system and cause the very defects that lead to the development of leaks. Additionally, some of this vegetation is extremely unhealthy for the people the roofing system is designed to protect.

Pests. Standing water provides the opportunity for pests to gather. Not only is it a breeding ground for mosquitoes, it provides a gathering location for birds, rodents and other pests to find their necessary water.

Weight. Depending on the size of the ponding area, it could be adding unanticipated weight to the roofing structure. A single gallon of water weighs 8.34 pounds. You can quickly see how large areas of ponding can add substantial weight to specific structural locations. Those locations may not be sufficiently reinforced to support that weight.

Collapse. Over time, left unchecked that ponding water will lead to system failure and will eventually get into the structure. The structure will weaken and collapse. No roofing system or substructure can withstand the damage of unchecked water year after year.

How to Address Ponding Water Issues

There is no point in identifying a problem if you aren’t willing to offer some solutions. Here are a few ways to identify and address water ponding.

Inspections. Scheduled inspections help identify the existence of a ponding water issue. Simply put, you can’t fix what you don’t know is broken. The NRCA states water found standing on flat roofs for longer than 2 full days after a storm should be examined by a professional commercial roofing contractor.

Maintenance. Appropriate maintenance of the flat roof system is paramount. This is how those small defects that may exist are corrected, reducing the risk of system compromise from the accumulated water.

Repairs. Any repair should be made promptly and correctly. Though it doesn’t stop the water from ponding, it does reduce the likelihood of more extensive damage from occurring.

Restoration. The application of a coating, spray foam or single-ply membrane improves the waterproofing of the system and helps seal any existing defects. If the ponding is due to collapsed insulation or other “low spot” in the roofing structure, it can also help fill in the area for a more even roof.

Gutters. Gutters need to be cleaned and inspected at least twice a year. Debris build-up is another common reason water can begin to pond on a system. This is such an easy fix. There is no excuse for it ever occurring.

Drains. The installation of drains may become necessary. Experts recommend a drain every 80 feet to allow for proper and efficient water removal.

Replacement. If the problem is extensive or caused by issues like collapsing insulation, weakened structure or even a foundational issue, the only answer to the problem may be a full tear off and replacement to address the deficiencies.

Remember, more than just an eyesore, ponding water is truly a hazardous condition to any flat roof system. Left unchecked, it will ultimately lead to system failure and the risk of a catastrophic loss to your client. Do them a favor, and make sure they know the risks. They will appreciate it.

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Commercial Roof Inspection Tips https://www.choiceroofcontractors.com/commercial-roof-inspection-tips/ Thu, 26 Dec 2013 23:26:12 +0000 http://www.choiceroofcontractors.com/?p=1417 The on-site roof inspection should be completed as soon as you have determined that the job is one you are qualified and prepared to perform. For more information on bidding on new construction and retrofit projects, consulting with the business owner, building a roof history and more, view last week’s blog: The Bidding Process. After […]

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The on-site roof inspection should be completed as soon as you have determined that the job is one you are qualified and prepared to perform. For more information on bidding on new construction and retrofit projects, consulting with the business owner, building a roof history and more, view last week’s blog: The Bidding Process. After obtaining satisfactory answers about the building’s construction and history, begin an investigation of the building itself.

Your objective is to get a clear picture of the condition of the building and existing roof so that the bid you submit accurately reflects the costs involved. If extensive repair and construction work appears necessary, you will need to figure in the extra time, labor and materials. You may need to obtain estimates if subcontractors will be providing reconstruction or repair work.

Taking Photos or Video

During this physical inspection stage, using a camera or video camera is strongly recommended. Useful in putting together your bid, the photos or video you take during inspection also serve to document preexisting problems and conditions. In the event that a building owner later discovers damage to the building or property, your pre-inspection pictures are evidence that damage was in existence prior to the presence of you or your crew. Photographs or video protect you and your reputation.

Interior Inspection

When inspecting the inside of a building, begin by looking at the ceiling. Is there evidence of leakage? Look for sagging suspended roofing, water stains, and wet tiles, and make a note of their location. Later, in the actual roof inspection stage, you will check to see if they corresponded to flaws visible from the exterior. With metal ceilings, rust stains from condensation can be your clue. Up-close investigation will determine if the deck is still sound enough to roof over, or will require complete tear-off.

Take note of the building’s ventilation provisions. While this is important in any case, it is of particular concern in buildings with metal roof decks. Voids or seams in the deck may currently be serving as building ventilation. Continuous roof membranes such as Conklin roofing systems tend to seal off these voids, preventing vapor and moisture escape. Serious condensation problems (which owners may interpret as a leaking roof) could result if new ventilation provisions are not made. This factor must be considered in your bid.

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Next, take a close look at the interior support walls. Look for signs of moisture seepage, which could indicate flashing leakage on the roof. Appropriate repair or replacement of the defective flashings may need to be included in your bid. Also, watch for cracks or buckling as an indication of serious structural movement. If you suspect this may be occurring, it is advisable to notify the owner and consult a structural engineer before proceeding. This consultation should be at the owner’s expense, since any reroofing project attempted on an unstable structure is a risky venture.

Exterior Inspection

Once you have assessed the building’s interior, an exterior investigation is in order. Follow the same procedure as before, taking pictures of the building grounds and exterior, noting any structural problems such as cracks in the walls or foundation, or evidence of settling or erosion. If such problems exist, bring them to the owner’s attention and request an engineer’s inspection to determine the building’s stability.

Grounds

You may want to go beyond the building itself and take a look at the parking facilities, sidewalks and landscaping surrounding the structure. It is an unfortunate fact that in the past, roofing contractors have been held liable for damaged sidewalks and shrubbery, which were, in fact, preexisting conditions. With documentation in the form of photographs, video and dated notes, you can help protect yourself against such claims.

Inspecting the Roof

In looking at the roof itself, there are several factors, which will affect your bid. First and foremost, consider the general condition of the actual roof. Evaluate its appearance both in the center and around the perimeter.

On a built-up roof, look for signs of:

  • Checking, splitting, blistering, gravel turnover
  • Ply separation, ridging, bare felts

In areas of the roof display severe blistering, splitting, or alligatoring, the substrate must be repaired or replaced before any coating can be applied. Failure to do so could result in later complications with the roof and coating, requiring you to make repairs at your own expense.

Be sure to check the exterior parapet walls for deterioration. This can be the result of either flashing problems or structural instability. Also, check all roof protrusions such as skylights, vents and air conditioning units for signs of leakage. If the flashing or seals around any of these are defective, they will need to be replaced.

On a roof of plain galvanized metal, look for evidence of rust and check out the method or attachment to the structure below. Examine the condition of the screws and nails holding the metal panels in place. Are they still secure, or have they worked loose? Any loose screws or nails will have to be retightened or replaced.

Drainage

callBesides the general condition of the roof, one of the most important things to note is the drainage provided. Minimum industry standards call for slope of at least ¼” per foot. However, even with this degree of slope a roof can settle and weather into depressions, which collect water.

This commonly occurring problem, known as “ponding,” is a result of ineffective drainage. Ponding is defined as thirty-six or more square feet of water at least ¼” deep forty-eight hours after a rain. A ponding problem can threaten the life of the roof and the building underneath. This problem cannot account for more than 5% of the entire roof surface.

Any roof you work on should shed water completely. If it does not, you must remedy the problem. This means either the addition of a new drain wherever ponding occurs of the installation of crickets, tapered boardstock or polyurethane foam to build up the low areas and guide water toward existing drains.

Structural Load

Due to the weight of roofing felts and bitumen, the maximum allowable layering is two built-up roofs. Frequently, you may encounter situations where more than two complete built-up roofs have been layered in an effort to solve chronic leakage problems. This places a tremendous load on the supporting deck. Also, roofs exceeding the two-roof limit tend to be unstable and should be removed to two built-up roofs or less. Some local building codes may also prohibit more than two roof layers due to weight loads.

If the owner wishes you to put down new material, it is important to know the present roof load. If it is already near the building’s structural limits, the old roof must be completely removed and a new one installed. Tear-off and reconstruction involve a tremendous amount of time and labor, so it is important to determine this before you submit our bid.

Taking Core Samples

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Since each kind of substrate presents a different issue, it is necessary to identify a roof’s composition. The best way to accomplish this is by taking a core sample with a roof cutter or knife.

Use core samples to determine the type of insulation in place and its thickness. This can help you decide whether additional insulation needs to be added, and at what rate. The sample will also reveal the moisture content of the roofing material. Even if the surface layers of the roof appear to be dry, moisture in the bottom layers can badly blister your new system. Knowing this moisture factor is essential. No Conklin Roofing System may be applied over a damp roof.

Pay special attention to gravel built-up roofs, which can appear on the surface to be dry and level, but may be masking severe ponding problems. Always dig down through gravel or other loose aggregate and make certain the roof is not wet underneath. Core samples provide the best security.

A core sample can also help you assess what the roof deck itself is comprised of. From the interior of a building, looking up, the deck may appear to be metal, but a roof sample may reveal it to be metal topped with wood or concrete.

If the deck is made of wood, you need to determine its moisture content and assess the possibility of rot, mold or insect infestation. With concrete, important clues to look for are cracking, mildew and decomposition. These conditions often call for a complete roof tear-off, so an early diagnosis is critical.

One final benefit of taking roof samples is the discovery of how the substrate was adhered to the roof deck. Since there are a handful of right ways and hundreds of wrong ways to fasten a roofing system to a deck, it is important to know how each substrate is adhered to the deck before you start. Was it mechanically fastened or simply “glued down” with a layer of hot asphalt? If an inadequate method of adhering was initially used, the whole substrate could eventually work itself loose, delaminating Conklin coating.

Assessing a roof’s condition and getting a handle on the costs and risks involved can be somewhat difficult. No two situations are ever exactly the same. If there is ever a question in your mind about the integrity of a roof deck or substrate, or how to go about testing them, do not hesitate to call Conklin’s Building Products Department. These specialists can answer your roofing questions and offer tried and true suggestions.

Nondestructive Moisture Detection

One of the most important reasons for obtaining core samples is the need to identify and replace any areas of trapped moisture. However, should the owner object to your cutting into the roof for core samples, there are alternative, nondestructive methods for locating roof moisture. As the name implies, nondestructive methods provide this information without damage to the roof membrane.

Nuclear Moisture Detection

Nuclear moisture detectors work by identifying the hydrogen atoms in water by means of a radioactive source. The source contains about one milligram of radioactive radium or americium and a small about of beryllium. Neutrons are generated in the detection unit and travel outward until they encounter atoms in the roof system. The neutrons then slow down, and some are bounced back toward the unit. A counter on the nuclear detector records the number of returning neutrons, which translates into the number of hydrogen atoms, i.e. water, in the roof.

These figures are plotted on a grid of approximately four square feet and take from one to five minutes per measurement. The hand-held detector itself is about the size of a lunch box and weighs approximately twenty pounds.

Capacitance Methods

Capacitance methods of moisture detection are based on the fact that most materials have dielectric constants. The capacitance unit has two metal pads, which sit on the roof while an electrical current is passed between them. The curve of the resulting electrical arc determines the dielectric constant present. While the dielectric constant reading of most dry, solid roofing materials is in the one to four range, a constant of nearly eighty is expected for water. Thus, elevated readings indicate both the presence and severity of the moisture problem.

The capacitance equipment can take these readings within two minutes, but the roof surface must be completely dry for accuracy. Measurements are made on a grid, just as in nuclear detection.

Infrared Imagery or “Thermography”

Infrared imagery, or thermography, detects the loss of heat through the roof. When a roof becomes wet, its insulation properties are reduced. The most areas of the roof conduct more heat through the roof than the dry areas. This is revealed through light and dark areas on the film or video.

This form of thermography is most often accomplished by flying over a roof at night while taking aerial infrared pictures. A lack of detail, however, often occurs when the images are recorded from such altitudes.

Greater accuracy is actually achieved when hand-held equipment is used while the roof is walked. The wet areas are documented on film or video, then marked off on the roof with spray paint. With this type of close-range thermography, the entire roof is scanned, generating data on every square foot. Best results are achieved at dawn or dusk, when the temperature differential is greatest.

To follow up any nondestructive test method, areas which indicate moisture should be core sampled as previously described to verify the degree of wetness. The results of the core sample will show if any material replacement is necessary.

Evaluating the Job: Some Cost Considerations

In addition to all typical major costs, such as the product and labor required, other factors will need to be considered before you submit our bid. One is “bucket loss,” the five to fifteen percent of the product, which remains on the sides of the product container. From a five-gallon container, therefore, you can expect to fully utilize only 4.25 to 4.75 gallons. Also, when using the spray application method, count on a wind loss of anywhere from 5-15%. The surface texture of the area to be coated also factors very strongly in the amount of product needed for adequate coverage.

Equipment costs vary from job to job, depending on the Conklin system used, the condition of the existing roof and the specific substrate preparation required.

Other costs, which are sometimes overlooked include:

  • Transportation of crew and equipment to and from the job site, with allowance for fuel and vehicle wear.
  • Wear and tear on rollers, brushes, ladders, and spray equipment. Also, figure in any fuel costs of operating your equipment.
  • Special insurance costs, which may apply when working around or above expensive equipment.
  • Costs to further inspections and repairs if a warranty agreement or maintenance contract is sold.

These are just some of the “hidden costs” of the roofing business. As you gain more and more experience in a greater variety of roofing jobs, you will no doubt develop lists of such expenses and develop a greater ability to accurately estimate each job. Accepting small jobs and working with your sponsor initially will help you gain this experience while minimizing your financial risk.

Many new construction and renovation projects run over-budget. Unfortunately, this roofing portion of the project is a common scapegoat for cost overrun. Because the roof is less noticeable, it is often the first area to suffer in a budget pinch. As you bid, bid specific work for a specific price. If either price or service change in the middle of a job, do not accept verbal changes. To protect yourself contractually and financially, keep every agreement exclusively in writing.

Whether your project involves reroofing, retrofit or new construction, insist on a pre-job conference with all interested parties. Get a clear picture of what you are expected to provide and at what price, which area of the project your proposal addresses, and what materials and labor are covered in the proposal. This coordination between parties will help ensure a high-quality, timely project with fewer disputes over costs and areas of responsibility.

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The Bidding Process https://www.choiceroofcontractors.com/the-bidding-process/ Fri, 20 Dec 2013 19:11:44 +0000 http://www.choiceroofcontractors.com/?p=1356 Because this topic is so important, we have broken it up into two parts. In next week’s blog, we will focus on inspecting the roof, taking core samples, detecting moisture, evaluating your costs of the job, and more. Bidding on New Construction New construction can be bid in several different ways. Typically, an architect is […]

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Because this topic is so important, we have broken it up into two parts. In next week’s blog, we will focus on inspecting the roof, taking core samples, detecting moisture, evaluating your costs of the job, and more.

Bidding on New Construction

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New construction can be bid in several different ways. Typically, an architect is hired by the development firm or owner to design a building, meeting requirements for occupancy, fire and safety, and national and local building codes. The actual construction of the building is then jobbed out. The work can be handled by a general contractor or by a design/build firm, which both designs the project and builds it from the top to bottom.

In this case, the project architect is responsible for specifying the roofing portion of the project. If a job interests you, it is up to you to demonstrate to the general contractor or project architect that Conklin’s systems match or surpass the specified product. The long-range goal, of course, is for a Conklin coating to become the specified product.

The architect’s specifications will sometimes list one of more manufacturers, with a qualifier such as “Product X or approved equal.” “Approved equal” generally means that in order to bid a different product, you need approval from the architect. If the wording “or equal” is used without “approved,” you must simply show that the material submitted equals or exceeds the specified product. Even when Product X is specified without the qualifiers, “equal” or “approved equal,” it is still common to submit voluntary alternatives. Architects and owners will usually consider these alternates if they are presented in a professional manner and promise cost-savings for the project through less expensive materials and/or labor.

contractor-biddingIn the case of the General Contract award, as mentioned previously, subcontractors submit roofing proposals to the general contractors bidding on the job. The general contractors each evaluate their numerous subcontractor bids and submit a comprehensive bid to the owner. The winning contractor then awards the individual subcontracts for each different part of the job. Thus, a roofing subcontractor is contracted with, and employed by, the general contractor for the roofing portion of the project.

These contracts can involve much interaction with architects and owners, and legal language, which binds the subcontractor to certain regulations and conditions, including possible union labor stipulations.

Bidding on Retrofit

While the bidding documents for new construction may sometimes be intimidating to a new roofer, in retrofit they usually take the form of a more straightforward proposal, submitted by the roofer directly to the owner of a commercial building. While your responsibility in retrofit is certainly no less than in new construction, the contracts and legal language are likely to be less complex. And, you will probably be dealing with the building owner unless your roofing project is part of a large-scale, overall building renovation. In this case, the job may more closely resemble a typical new construction project with more complex legal documents and regulations.

Importance of Accuracy

While consulting a lawyer to interpret contracts is not usually necessary, it is imperative that you fully understand all the requirements in the documents, and feel confident you can meet them. Carelessness in reviewing specs and contracts can lead to your liability for failing to follow stipulations. Your reputation and future job prospects depend greatly on this professional attitude toward your work.

Since a majority of Conklin roofing projects involve retrofit treatment, the remainder of this blog post focuses on the steps and procedures in inspecting and bidding retrofit work.

Consulting with the Building Owner

When you have learned of a retrofit roofing job that interests you, the next step is to meet with the owner to discuss his or her needs and gain a more complete understanding of the job.

To this initial consultation, you should bring a notebook or clipboard for jotting down information, as well as brochures and spec sheets on Conklin’s products. Also helpful are any professional references earned from past jobs. These factors will help maintain our image as a professional contractor network.

Building a Roof History

The building owner should have blueprints and specifications describing the roof’s structure and composition. However, be aware that these plans may have been created before such additions as new wings, penthouse suites, air conditioning, solar units, and other alterations. The city may also have building plans on file.

Check to see if the ownership has been constant. If the building has changed hands, ask if the blueprints and documents are up to date. Do not proceed until you are satisfied that the information given to you is accurate and current. Once your bid is accepted and the actual work has begun, you may have little recourse if “surprises” occur concerning the roof’s structure.

The owner or manager should be able to tell you what, if any, repair work has been done and when it was completed. Knowing how the building was constructed, where supports are located, and what roof deck materials were used can be invaluable, if, for instance, it becomes necessary to install a new drain of lay down boardstock prior to roofing treatment. Different materials, time and labor are required for different roof decks. Knowing all the facts ahead of time can help you make a quick and accurate assessment of the situation.

Intended Use of Building

Another important fact to establish with the owner is the actual and intended usage of the building. For instance, is it used for manufacturing, storage or shipping? Are high levels of humidity present? Are hazardous fumes generated that require special ventilation? Is the interior of the building subject to sudden or extreme temperature changes? All these factors are valuable background information, which can make accurate evaluations during the subsequent on-site inspection.

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Choice Roof Contractor Group Partners with Top Roof Marketing https://www.choiceroofcontractors.com/choice-roof-contractor-group-partners-with-top-roof-marketing/ Thu, 19 Dec 2013 14:28:01 +0000 http://www.choiceroofcontractors.com/?p=1349 2013 already has been a very exciting year for Choice Roof Contractor Group™, as there has been an upswing in more prospective members expressing interest in our extensive member support and benefits. Recently, however, an exciting development became official: the announcement of our formation of a strategic partnership with Top Roof Marketing™, a nationwide full-service […]

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2013 already has been a very exciting year for Choice Roof Contractor Group™, as there has been an upswing in more prospective members expressing interest in our extensive member support and benefits. Recently, however, an exciting development became official: the announcement of our formation of a strategic partnership with Top Roof Marketing™, a nationwide full-service marketing firm that focuses exclusively on the needs of commercial roofing contractors.

Contractors join our group for:

  • Network-backed Guarantees
  • Support from Fellow Roofers
  • Group Discount Purchasing
  • Shared Marketing Strategies
Learn More
In the partnership, the marketing firm will empower our network members for greater success by giving them priority treatment, high-quality marketing and sales support, and strategic advisement. Marketing support will consist of giving our members access to first-rate marketing services including direct mail, website development, search engine optimization, print design, telemarketing, video production, social media campaigns, and public relations. These efforts will be crucial in helping our membership drive business growth in their local markets.

Samuel Hostetler, Chief Strategist and Senior Mentor at Choice Roof Contractor Group, made note of the marketing firm’s steadfast commitment to ensuring roofing contractors’ success and extensive track record for getting quality results. “As Top Roof Marketing is the only marketing firm focused exclusively on serving commercial roof contractors, no other company matches its specialized expertise in this complex and constantly changing industry,” he stated. “In fact, the owner himself completed Conklin’s roof systems training program in order to best serve the firm’s growing list of clients who use Conklin products. This high level of commitment to quality service really stands out!”

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To fully support the exclusive advantages and benefits offered by its nationwide platform, Choice Roof Contractor Group chose the marketing firm on account of its service efficacy and seasoned marketing expertise. Top Roof Marketing is owned and led by Jonathan Keim, Marketing Director for Choice Roof Contractor Group and a widely recognized, successful marketing professional in his own right.

Keim’s background includes supporting more than 200 publically traded companies with their marketing strategies as the Communications Director of three investor relations companies. Over the course of his career, he has collectively added more than 2.5 million social media followers to client accounts, developed more than 30 individual brands from conception, executed hundreds of awareness campaigns, overseen countless email marketing initiatives, and helped numerous business owners increase their success.

“Choice Roof Contractor Group’s business model offers a win-win across the board,” commented Jonathan Keim. “Not only are commercial building owners able to find a qualified, fully trained commercial roof contractor in their local area, but roof contractors and roofing companies who join the network are given a long list of tremendous advantages to jumpstart or accelerate their growth in this very profitable industry.”

Both organizations look forward to developing this partnership and giving network members even more opportunities for success.

To learn more about Top Roof Marketing, visit their website at http://www.toproofmarketing.com

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Roof Decks – Comprehensive Overview https://www.choiceroofcontractors.com/roof-decks-comprehensive-overview/ Mon, 16 Dec 2013 18:16:08 +0000 http://www.choiceroofcontractors.com/?p=1329 The following blog consists of brief descriptions of the most common types of roof decks encountered, their particular strengths, liabilities and suitability for coating with Conklin roofing systems. To learn why Choice Roof Contractor Group and its commercial roof contractors exclusively use Conklin for all projects, visit the following page: The Conklin Difference. Steel Decks […]

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The following blog consists of brief descriptions of the most common types of roof decks encountered, their particular strengths, liabilities and suitability for coating with Conklin roofing systems. To learn why Choice Roof Contractor Group and its commercial roof contractors exclusively use Conklin for all projects, visit the following page: The Conklin Difference.

Steel Decks

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  • Roof maintenance & repair
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  • Complete roof replacement
  • Roof life-extending solutions
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There are three types of common steel decks:

• Narrow rib (maximum 1”)
• Intermediate rib (1¾”)
• Wide rib (maximum 2 ½”)

The rib is considered the width of the channel between the flat upper sections of the metal sheet. Steel decks are typically installed onto steel framing and fastened by means of welding or mechanical fasteners. Corrugating allows greater spans and amount of load per square inch (psi). Rib style and type are determined by a structural engineer and are given in specifications details. Another type of deck or roof is standing seam metal roofs. These roofs are classified as either structural panels of architectural panels. For specific details on stand seam roofs, contact the Conklin Building Products Department.

Wood and Plywood Decks

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Solid wood boards and plank were a very popular choice in construction many years ago. Today, they are still occasionally used, along with the more prevalent composite boards, but plywood is by far the more commonly used deck material. Plywood is a manufactured material comprised of a composite wood core sandwiched between solid wood veneers, which are “laminated” or glued together. The grades of plywood considered acceptable decking by the American Plywood Association (APA) are APA structural I and II rated sheathing, exterior or exposure 1.

The panels are also assigned span ratings indicating the maximum distance allowable between supporting rafters. To ensure that plywood meets Conklin specifications, an APA rated board, rather than a mill-certified board, is needed. Mill-certified boards are not tested as thoroughly as APA-rated boards and may be more subject to buckling or delamination.

Plywood Under Special Coatings

Chemical coatings for roofs have increased the range of design possibilities, particularly in larger commercial structures where contoured or steel-pitched roof surfaces are exposed to view.

Exterior plywood is recommended for use under special coatings for roofs. When the coating requires a very smooth base, use APA A-C Exterior or APA B-C Exterior plywood. When maximum smoothness is not essential, use APA C-C PLUGGED Exterior. Tongue-and-groove plywood (½” or thicker)or lumber blocking at panel edges is recommended. A 1/8” space is recommended at all edge and end joints unless otherwise indicated by panel manufacturer. If high-performance coatings are to be used for finish, check coating manufacturer’s recommendations for panel joint treatment.

Grades should also be specified when the structural wood deck is to be overlaid with a separate plywood layer to serve as substrate for special roof coatings. A 1/8” space is recommended at all edge and end joints unless otherwise indicated by panel manufacturer. Although minimum ¼” plywood may be used over structural decks, 15/32” or thicker panels should be considered for best performance over uneven surfaces or when rain or high humidity is anticipated prior to application of roof coating.

APA – The Engineered Wood Association has several publications available containing extensive information on plywood and Oriented Strand Board (OSB) and its uses.

They can be obtained at the following location:

APA – The Engineered Wood Association
P.O. Box 11700
Tacoma, WA 98411-0700
(206) 565-6608
www.apawood.org

Precast Concrete Deck Systems

Typically, precast concrete deck systems are concrete slabs, most commonly found with metal edges or tongue and groove edges. The slabs are reinforced with wire fabrics or preformed steel bars and are either slipped to the steel frame members or welded to concrete frames by means of metal plates. Depending on the design of the slab, they span anywhere from four to twelve feet. The joints between the slabs are sealed with flexible grouts or other seals.

Gypsum Concrete

Gypsum concrete is a poured system composed of a mixture of gypsum, wood chips, and shavings combined with water. After mixing at the job site, the substance is poured over a wire mesh, which is supported on form boards of either fiberglass, gypsum board, or other material. The minimum acceptable thickness of a gypsum concrete deck is 2”. One advantage of this system if the feasibility of varying the thickness to provide slope for good drainage.

One cautionary note: Because the material is applied in a wet state, it is very important to allow sufficient drying time before installing a roofing system over a new gypsum.

Further, gypsum concrete is not suitable for direct application for Conklin coatings because its chalky surface prevents proper adhesion. Before roofing over this system, some method of moisture detection must be used to ensure that the deck is dry, followed by a recommended “divorcing material” to act as a buffer between the concrete and coating.

Cement-Wood Fiber Panel Roof Deck (Tectum)

Cement-wood fiber roof deck panels are composed of treated wood fibers that are bounded together with Portland cement or other binder and compressed or molded into flat panels. The panels provide both acoustical and thermal insulation. They are furnished either as tongue-and-groove planks suitable for application directly to joists or with rooted edges, which must be secured with bulb-tees.

Reinforced Concrete Roof Decks

Reinforced concrete is produced by mixing aggregate (usually stone or crushed gravel and sand) with Portland cement, water, and in some cases, chemical additive. Steel bars, welded steel mesh or both are used to reinforce the concrete. Then, the surface should be finished to a texture equivalent to either a light power-trowel finish or a firm wood-trowel finish. The density of these decks is from 100 to 150 pounds per cubic foot. Reinforced concrete should not be confused with either lightweight structural concrete or lightweight insulating concrete.

Lightweight Insulating Concrete

Lightweight insulating concrete is usually made of perlite or vermiculite and Portland cement. Occasionally, a foaming agent is also added to create bubbles within the concrete, lessening its density. Minimum standard density is twenty-two pounds per cubic foot. This is a poured system, which is installed over wire mesh or form boards much like the gypsum deck. The material used in making these units can also be used as a fill over pre-cast and pre-stressed deck systems at a minimum thickness of 2”.

Note: Lightweight insulating concrete is not suitable for direct applications of Conklin coatings due to its high water absorption properties. Before roofing over this system, use some method of moisture detection to ensure that the deck is dry. Then, use a recommended “divorcing material” to act as a buffer between the concrete and coating. Conklin Building products Department will provide specific recommendations for this procedure.

Do not apply Benchmark or Rapid Roof III where temperatures exceed an ambient of 100o F and a surface temperature of 120o F. Do not apply at temperatures below 40o F, during inclement weather, when temperatures may drop below 40o F within forty-eight hours of when the temperature is not at least 5o above the dewpoint.

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Insurance Tips for Roofing Contractors https://www.choiceroofcontractors.com/insurance-for-roofing-contractors-tips/ Wed, 27 Nov 2013 00:45:10 +0000 http://www.choiceroofcontractors.com/?p=1125 Liability and Insurance Liability insurance is a necessity for every professional construction contractor. This is especially true for the roofing contractor. Roof work involves a high risk to people as well as potential damage to equipment and property inside the building itself. Liability insurance is important to protect yourself and your business as well as […]

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Liability and Insurance

Liability insurance is a necessity for every professional construction contractor. This is especially true for the roofing contractor. Roof work involves a high risk to people as well as potential damage to equipment and property inside the building itself. Liability insurance is important to protect yourself and your business as well as your customer’s interests.

Insurance Requirements

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A Comprehensive General Liability or Manufacturer’s and Contractor’s policy is needed, including both premises and completed operations coverage.

Premises-Operations coverage applies to property damage and/or personal injury to others that might arise during a roofing application. An example would be the overspray of a cool roof coating onto a parked car, or equipment falling from the roof and injuring a pedestrian below.

Completed Operations coverage applies to property damage or personal injury to others, which could occur as a result of the roofing application after the job has been completed (the policy is kept effective through the term of the warranty).

Acquiring and Maintaining Your Insurance

When acquiring insurance, choose a reputable agent who has previously written policies for roofers, contractors and those in the construction industry and will better understand your needs.

Maintaining your insurance is important. You should keep your policy in effect through the time period of warranties you issue. For example: if you plan to retire from roofing tomorrow, but completed and issued a five-year warranty on a job today, you should keep your insurance policy in effect for the full time period of the warranty.
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The amount of insurance coverage needed to protect your business should be assessed on an individual basis. The minimum limits of liability that we suggest are $500,000 Bodily injury, $500,000 Property Damage. Yet, these limits may be grossly inadequate if you take on a large job or a job in which the building’s contents are extremely valuable (example: roofing over computers or other sensitive equipment).

Points Worth Mentioning to Your Insurance Agent

The following points may help your agent better understand your needs as a Conklin coatings and single-ply applicator, resulting in better insurance protection.

  • Conklin roofing systems go on cold and can be applied with a brush or roller. If sprayed, this is normally performed with an airless sprayer. No hot material or open flames.
  • Hy-Crown is a Hypalon single-ply roofing membrane and Flexion is a CPA single-ply roofing membrane which are, in most cases, mechanically fastened to the roof deck.

 

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Find a Local Commercial Roofing Contractor with Easy to Use Interactive Map https://www.choiceroofcontractors.com/find-a-local-commercial-roofing-contractor-with-interactive-map/ Thu, 14 Nov 2013 16:06:47 +0000 http://www.choiceroofcontractors.com/?p=960 Here at Choice Roof Contractor Group, we are always looking for ways to help anyone who owns or manages a piece of commercial real estate. Commercial roofs will require some regular routine maintenance, and there are times when they will need repair work or replacement. This leaves commercial real estate owners looking for local roofing […]

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Here at Choice Roof Contractor Group, leak3we are always looking for ways to help anyone who owns or manages a piece of commercial real estate. Commercial roofs will require some regular routine maintenance, and there are times when they will need repair work or replacement. This leaves commercial real estate owners looking for local roofing contractors who can successfully repair, replace or maintain their roofs. Commercial property is an investment, and a good leak-free roof helps to protect this investment.

We have assembled a nationwide team of experienced roofing contractors, and we have made it super easy for any commercial real estate owner to find and locate these highly trained commercial roofing specialists in their area. We are proud to introduce our easy to use interactive roofing contractor map. It gives commercial building owners a bird’s eye view of the entire United States. From Florida to Washington and from California to Maine, there is an experienced local commercial roofing company within our network.

Commercial property owners can search by city, state or zip. It is as simple as clicking on the contractor closest to you. From there, you can contact the Choice Roof Contractor by either phone or a contact form. Now it is easier than ever to locate an experienced commercial roofing contractor in your area.

What Type of Commercial Roofs Do You Service?

Our nationwide group of contractors perform repairs and restore every single type of commercial roof that exists including:

● Metal roofsrr3
● Flat roofs
● Slate roofs
● Low slope roofs
● Built-up or BUR
● Asphalt both rolled and shingle
● EPDM rubber roofs
● Hot tar and gravel
● Thermoplastic TPO

Every type of commercial roof is covered!

Why Choose a Choice Roof Contractor?

All of our members use Conklin roofing products not because they have to, but because Conklin roofing products are the best within the entire commercial roofing industry. Conklin has been leading the roofing industry for over 40+ years when they introduced their first commercial roofing products way back in 1977. Since then, Conklin roofing products have been applied to over 2 billion square feet of roof.

The Conklin Benefit

Conklin roofing products offer several great benefits that are very difficult to ignore. A Conklin roof coating can extend the life of an existing commercial roof system by as long as 20 years with just one application, and our members back this with up to a 20-year, non-prorated guarantee. There is no need for expensive roof replacement or costly tear-off expenses!

Conklin roofing products are also ENERGY STAR® compliant. This means that Conklin roofing products have met or exceeded the strict standards put in place by the Environmental Protection Agency for energy conservation.

Conklin roofing products are rr4leading the industry in energy efficiency. They have been labeled “cool roof” systems because they reflect as much as 85% of the sun’s heat from the roof. This can reduce the temperature of a roof by as much as 90 degrees. A cooler roof can equate to massive energy savings. In fact, the entire roof can pay for itself in as little as 7 years’ time!

Finding a trusted commercial roofing contractor in your area is no longer a problem. Our new interactive map will help you find the right local roofer for the job in a matter of seconds! To access our map, click “Find a Local Contractor” on the top-right corner of any page, or visit http://www.choiceroofcontractors.com/find-a-commercial-roof-contractor.

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