Roof Coating Case Study -
Single-Ply Roof

This EPDM single-ply membrane was approximately ten years old, and at the time of the job, leaks were quite minimal. The customer primarily wanted a coating system to help cut down on the heat within the building and to prevent future degradation of the membrane.

The existing single-ply membrane surface was cleaned by applying American WeatherStar Etching Primer 920 using 3,000 psi of pressure to remove ten years of dirt and pollution which had collected on the roof. Then the waterproofing by applying the Miami-Dade County approved AWS Silicone 410 and AWS Polyester Fabric on all seams and penetrations that were causing the building owner problems.

After completely waterproofing the system, two coats WeatherStar Coatings bright white Silicone 410 were applied to the entire roof area to form a seamless elastomeric membrane that will last for at least ten years.

Other American WeatherStar top coats suitable for EPDM restoration include AWS Urethane 520 for low sloped roofs that don't drain well or AWS Acrylic 211, which is also Miami-Dade County approved, for roofs that do drain well. We recommend a moisture survey before installing any coating systems to an EPDM rubber roof. If moisture is found, the wet insulation should be replaced before the AWS roof coating system is applied.

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