Profile: Karnak deals with coatings, cements and sealants for roofing, waterproofing and dampproofing. Our 501 elasto-erite is a co-polymer elastomeric emulsion exterior protective coating. We supply 31-fiberglass membrane, 34 utility grade asphalt cotton fabric, 3036 poly-mat and metal seam sealing tape. Our 168AF tar resaturant is a heavy-duty non- protective coating for long lasting, weather-resisting protection for tar and gravel roofs.