Roofing Made Simpler

For over 25 years, Fresno, California-based General Coatings Manufacturing Corp. (GCMC) has developed and manufactured spray polyurethane foam (SPF) for roofing and tank insulation, which provide contractors with easy to use, and high yielding. SPF foams exhibit superior energy saving solutions due to its air sealing, excellent R value and continuous installation for use in agricultural buildings, low slope roofs, and wine storage tanks.

Ultra-Thane Spray Foam Roof Systems

Ultra-Thane spray foam roof systems are field applied seamless membranes, fully adhered to the entire deck substrate, and self-flashed around every penetration leading to reduced entry points for rainwater penetration. Properly installed SPF roofs perform as designed to full warranty term as they are tough, durable, and long-lasting roof systems that resist normal mechanical wear and destructive thermal expansive forces.

GCMC Spray Foam systems reduce the impact of global “climate change” with low GWP components in renewable and sustainable roofing solutions.

GCMC roof coatings can reduce “urban heat island effect” and are compliant with CRRC, EnergyStar, and CEC Title 24 energy efficient building code standards to provide excellent solar reflectance, and energy savings.

Our high-performance roof coating offerings of acrylic elastomeric, high solids silicone, 2-component polyurethane and Polyaspartic products restore and weather-proof existing commercial, residential, and industrial structures.

Featured Products

Ultra-Flex 1000
Ultra-Guard 5700 HS
230 HFO Roofing Foam

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GCMC products undergo rigorous independent third party testing to meet internationally recognized quality and performance standards with UL, FM, ICC, and Intertek to ensure that our products hold up to your most demanding roof solution requirements. 

Energy Saving

Energy efficient coated foam roofs reflects the sun's energy off of your roof resulting in cooler building that uses less energy.

Quick / Easy Install

GCMC coating products can be rolled or sprayed on, creating a protective membrane that extends the life of your roof.


GCMC's Spray Foam products can be applied over your existing roof there is no need for expensive demolition and disposal.

Low-Cost Maintenance

GCMC coatings durable and long lasting so there is less maintenance required to maintain your new roof.

Eliminate Ponding Water

GCMC roof foam can be applied to filling in low spots and produce positive slops, eliminating ponding water

Environmentally Friendly

GCMC products are engineered to be low VOC and low global warming systems.