The Protection Board-H is a heavy-duty asphalt-impregnated organic mat with a fine mineral applied to the surface to prevent sticking in the roll. Protection Board-H is very tough and provides positive protection to the waterproofing membrane during installation of other work. Typical uses include plaza decks, roof terrace decks, parking decks and any other horizontal surface to which waterproofing membrane has been applied. It is used as a protection course on horizontal surfaces to protect the waterproofing membrane from damage by foot traffic and physical abuse from other trades.