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Monoply Roofing System


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I encountered a roof covering on a 1966 building that I haven't seen before. The covering was applied five years ago and the installers called it Monoply 3PF 1204 on their spec sheet. It looked and felt like I was walking on hard fiberglass. According to the spec sheet a base coat of PC 107 emulsion is sprayed on and a fiber reinforcement sheet is brushed into the emulsion. After it sets another coat of emulsion is applied and chopped fiberglass strands are sprayed on. The final coat is a white reflective coating.

I observed a few narrow cracks in the covering. The photo below shows the overspray on the HVAC unit. I didn't find much on the internet and the local company that installed it is gone. Does anyone have more knowledge about this?


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