Approved Ice and Snow Melts for use on EPDM Membrane
March 5, 2019
Keeping a roof in top-notch shape during the winter is of the utmost importance to building owners and applicators alike – keeping crews safe and upholding the integrity of the roofing materials is a non-negotiable.

One of the most common questions about an EPDM roofing system in the winter is in regards to the chemical compatibility of rock salt or other ice melts with EPDM membrane. EPDM is chemically resistant to rock salt (also known as halite or sodium chloride) and calcium chloride. If either of these two materials are applied according to the suppliers’ recommendation on an EPDM roof, there will be no chemical degradation of the membrane.

The biggest concern with rock salt and calcium chloride pellets is the physical form these ice melts come in. Rock salt is a hard, crystalline product that could harm the membrane if walked on after application. Calcium chloride pellets are somewhat softer in consistency, but could still potentially cause damage to the membrane if walked on before breaking down from the pellet form. Because of this, it is wise to limit foot traffic over any areas where ice melts have been applied, in order to minimize the potential for damaging the membrane through abrasion or puncture.

It should also be noted, that chemicals such as halite or sodium chloride can potentially cause corrosion to some metals – in particular, aluminum or copper – so it is wise to avoid application of these chemicals around any area on the roof that is made of these materials.

For more information regarding installation, care, and upkeep of EPDM – please contact Ron Goodman.


    Ron Goodman
    EPDM Product Manager
    Product Marketing
    [email protected]
June 11, 2019
Flashing Options for Every Detail

Carlisle offers three different types of Sure-Seal® Pressure-Sensitive (PS) flashings to address the variety of details found on any given roof. All three feature the proven weatherability of EPDM and come with 30-mil of Pressure-Sensitive (PS) SecurTape™ to create a watertight seal. The primary difference among the three is the amount of cure in the rubber, and the process used to manufacture them. PS Elastoform – often called “uncured” flashing – is used to flash irregularly-shaped objects or details with multiple angle changes. The uncured state of the flashing allows the rubber to be formed and stretched into place without reverting to its original shape like cured rubber. The flashing formulation is designed to cure on the roof with exposure to heat. Since it is necessary to limit heat exposure in the manufacturing process; to keep the product uncured; Carlisle requires all edges to be lap sealed. This prevents water from getting between the flashing ply and the tape ply while the material cures on the roof. T-joints, corners, and pockets are all made from Elastoform flashing – which has a 9-month shelf life. PS Overlayment Strip – often called “semi-cured” flashing – utilizes the same Elastoform flashing formulation, but is semi-cured with heat during the manufacturing process. The overlayment strip has the dark black look of uncured flashing, but is 70% cured in order to add tear resistance for stripping in metal edging or end laps. PS Overlayment Strip is packaged without the diamond pattern film, as it is removed during the semi-curing process. This is an easy way to tell the difference between PS Overlayment Strip and a roll of PS Elastoform. Due to the semi-cured nature of PS Overlayment strip, it can seal step-offs at splice intersections of 60-mil rubber without the need for T-joint covers. PS Overlayment Strip is better suited to strip-in seams than PS Elastoform, as it eliminates the need for lap sealant and T-joints. PS Cured Cover Strip is made with the same 60-mil non-reinforced membrane as Carlisle’s standard sheeting, and then laminated to 30-mil of SecurTape. This product is primarily used for stripping-in metal or end-laps and offers the same finished appearance as the field membrane. Due to the fully-cured nature and thickness of the product, T-Joints are required at splice intersections. Carlisle SynTec’s Sure-White® Pressure-Sensitive Flashing is available in Elastoform and cured cover strip options, and is approved for use on both EPDM and TPO roofing systems. Sure-White Elastoform has a more aggressive cure package to account for the fact that the white flashing will not gain as much heat naturally on the roof. This translates into a shorter shelf life of 6 months. Keeping white or black Elastoform flashing cool during long term storage will help to maximize the shelf life. Carlisle SynTec has all your flashing needs covered. For more information about pressure-sensitive flashing, please contact your Regional Technical Manager.     Ron Goodman     EPDM Product Manager     Product Marketing     [email protected]

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May 28, 2019
CAV-GRIP III vs. Traditional Bonding Adhesive

With the introduction of Carlisle’s CAV-GRIP™ III Adhesive, it’s faster than ever to install fully-adhered TPO and EPDM. CAV-GRIP III can be used to adhere standard TPO and EPDM membranes in weather conditions down to 25°F, with a much faster application rate and flash-off time than traditional bonding adhesive. Check out this time trial video for proof, and use the tips below to ensure maximum speed and efficiency. Here are some keys to saving time and getting a the most out of CAV-GRIP III: Use larger cylinders and hose splitters: CAV-GRIP III comes in two sizes, 85lb. and 40lb. cylinders. Using 85lb. cylinders allows for more coverage from each tank without having to change tanks. By using a hose splitter, two people can spray CAV-GRIP III from one tank at the same time, allowing for faster application. Keep cylinders warm in cold weather: As CAV-GRIP III cylinders get cold, the coverage rate will be reduced and application will become more difficult. Store cylinders inside or in a hot-box at 70-80° before use. It is important not to set cylinders directly on a metal deck, as this will accelerate heat loss. Instead, always set the cylinder on insulation and use a Power Blanket to keep it warm during application. Overlap is key: When applying CAV-GRIP III to adhere EPDM or TPO in the field of the roof, very little overlap is required. While spraying, try to overlap 1-2 inches to ensure 100% coverage on the back of the sheet and the substrate. However, when using CAV-GRIP III to adhere membranes to walls, it is important to overlap 50% when spraying. Use CAV-GRIP III and these tips to save a ton of time and labor on the roof. The time that used to be spent stirring, rolling, and waiting for adhesive to flash off can be spent laying more squares of roof to get on to the next job more quickly. For more information, please visit the CAV-GRIP III Productivity Booster page, or contact Adam Burzynski with any questions.     Adam Burzynski     TPO Product Manager     Product Marketing     [email protected]

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May 14, 2019
Turn a Raining Day Into a Training Day

The roofing industry has endured more than its share of precipitation in recent months. Roofing contractors are challenged to work through backlogs and retain crews during down time. Consider making the next raining day a training day, and bring the crew into the office for additional training. When training content is in short supply, Carlisle SynTec Systems can help. The Carlisle SynTec Systems video hub is an online resource that can help roofing contractors both on and off the roof. This informative web page hosts over 80 short videos that are organized into the following categories: Details: This section features more than 30 videos that walk an applicator through the detailing of Carlisle’s thermoset and thermoplastic roofing systems. All detail videos are available with closed captioning in Spanish and French. What to Expect When We’re Inspecting: This content is great for foremen and applicators. Join a Carlisle field service representative on the roof as he takes the viewer through a step-by-step walkthrough of a Carlisle-warranted roof inspection. By understanding the inspectors’ processes and expectations, foremen can prevent punch-list items, and move onto the next job. Productivity Boosters: This series of videos is great for sales professionals, estimators, foremen, and installers. Viewers will see side-by-side time trial videos that calculate exactly how much labor can be saved by using newer, more innovative products and installation techniques. These productivity-boosting products will help applicators recoup lost time and revenue; and these videos will show them how. Access the Carlisle SynTec Systems video hub today or click the “Watch Videos” link on the Carlisle SynTec Systems home page. For more information about Carlisle SynTec Systems’ virtual educational content and video hub, please contact Rob Reale.     Rob Reale     Director of Integrated Marketing Communications     Integrated Marketing Communications     [email protected]

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