1.1 This specification covers an asphalt based protection board used for protecting the integrity of below grade or below wearing surface waterproofing. The protection board protects the waterproofing system from backfill, surfacing, constr This specification covers the manufacture, testing, and physical requirements of two classes of asphalt based protection board used for protecting the integrity of below grade or below wearing surface waterproofing. Class A is made with asphalt saturat