Cold Liquid-Applied Membrane
This is a broad range of products with a diversity that is not fully reflected in current standards. The products are delivered in fluid state and they cure by various mechanisms after application to form a continuous membrane. Material types include one-component—moisture curing, one-component with accelerator, and two-component. They are applied with trowels, brushes, rollers, and spray. The base chemistry includes polymers, polymers modified with bitumen, and bitumen modified with a polymer. The materials may be reinforced with a fabric. This broad category of products is subject to the following ASTM standard and International Code Council (ICC) Evaluation Services (ES) Acceptance Criteria.
• ASTM Specification for High Solids Content, Cold Liquid-Applied Elastomeric Waterproofing for Use with Separate Wearing Course (ASTM C 836)
• ICC ES AC29 Acceptance Criteria for Cold, Liquid-Applied, Below-Grade, Exterior Dampproofing and Waterproofing Materials (AC29)
The following standards describe application considerations and installation methods for cold liquid – applied waterproofing.
• ASTM Guide for Use of High Solids Content, Cold Liquid-Applied Elastomeric Waterproofing Membrane with Separate Wearing Course (ASTM C 898)
• ASTM Guide for the Use of High Solids Content Cold Liquid-Applied Elastomeric Waterproofing Membrane on Vertical Surfaces (ASTM C 1471)