Westcoat Specialty Coating Systems deck system, ALX, has an ICC-ES report, ICC-ESR1661. The report finds that
as assembled in the manner per the report, it's a Class A fire resistant traffic coating.
But, Westcoat markets the product with another step involved not mentioned in the ICC report.
They want you to install WP-40, a private labeled Protectowrap product. This product is not part of the fire resistant system.
We put 2 samples to the test, assembling them, one with WP-40 underneath, one as per ICC's report.
Watch what happens, and ask yourself, do I want WP-40 on my deck?
Probably not when the fires come blowing over your house!
