Products / Western Colloid #298 Asphalt Emulsion
Western Colloid #298 Asphalt Emulsion
A water-based, non-fibered asphaltic bentonite clay emulsion used as a roof surfacing and as the waterproofing compound in cold-process built-up and Fluid Applied Reinforced Roofing systems, embedded with polyester or fiberglass reinforcement. The technical bulletin says it meets ASTM D1227 Type III and D1187, lists 45-50% total solids, a 50 degree F minimum application temperature and a 3 to 6 gallon per 100 sq. ft. rate, and notes it may be called Glas-Shield Compound as the principal component of the Glas-Shield roof system. It serves as a base coat for the maker's #525 SilverWhite aluminum and ElastaHyde acrylic reflective coatings and is sold in pails, drums, totes and bulk tankers.
Manufacturer
Product line
Asphalt Emulsions
Standards met
ASTM D1227 Type III and D1187
Status
active
Spec sheet
Sources
- westerncolloid.com verified 2026-09-26
- westerncolloid.com verified 2026-09-26
- westerncolloid.com verified 2026-09-26