USES Karnak #88R Rubberized Waterproofing is designed to waterproof masonry and concrete exterior below grade surfaces and interior surfaces above grade. Karnak #88R also functions as a vapor barrier and air barrier. This product is suitable as a general protective coating for wood, steel and for all backup materials for masonry such as stone, brick and concrete. This protective coating also helps to control moisture and inhibit air leakage in buildings as specified in a number of building codes.

SPECIFICATION

• ASTM D-4479 Type I
• SS-A-649D (Except AF)
• Complies with Ch. 13 MA Energy Code

APPLICATIONSurfaces should be clean and free of oil, grease, release agents, dirt, and laitance. All cracks and imperfections should be repaired and filled with Karnak #229AR-Elastomeric Trowel Grade and #31 Fiberglass Membrane or appropriate material prior to applying the #88R "Aqua-Block" Rubberized Waterproofing. If the surface is extremely porous or dirty, it is recommended that Karnak #108 Asphalt Primer be utilized to provide a firm film base prior to coating with the #88R.

COVERAGEApply by spraying with standard heavy-duty airless spray equipment at the rate of 4 gallons per 100 sq.ft. Karnak #88R may also be applied by masonry brush following the same coverage rate of 4 gallons per 100 sq.ft.

SPRAY APPLICATIONKarnak #88R is easily applied with a standard heavy-duty airless spray pump with heavy-duty guns and nozzles. Equipment manufacturers should be consulted for more complete information. Spray tip should be approximately 0.035 to 0.041 mm.

NOTE:Allow film to cure for at least 24 to 48 hours prior to backfilling. Care should be taken during backfilling not to puncture or damage the coating. A protection board is highly recommended to protect the film prior to backfilling. Contact Karnak Corporation for alternate product suggestions.