DensDefy® Liquid Barrier

Provides a durable, seamless water-resistive, air-barrier membrane.
Easily applied to a variety of different substrates via roller or spray.
Pair the DensDefy® Liquid Barrier System with the DensElement® Barrier System ensures coverage by a single, comprehensive warranty from Georgia-Pacific.
Can be applied in temperatures as low as 25°F, cures at 32°F, and is resilient enough for wet weather conditions, as it can be applied on damp substrates and tolerates rain immediately after application.
Vapor permeable – allows damp surfaces to dry.
Can be exposed to normal weathering conditions for up to 12 months.

Request a Sample

Product Details

Engineered for performance and durability, the DensDefy® Liquid Barrier is the ultimate solution for water-resistive and air barrier systems. Designed for application with a roller or spray equipment, this advanced Silyl Terminated Polymer (STP) technology forms a robust, elastomeric membrane, providing unmatched adhesion to common construction surfaces such as CMU, concrete, glass mat gypsum sheathing, OSB, and plywood. Combined with DensDefy® accessory materials, this product ensures a seamless protective barrier for any build.

FEATURES AND BENEFITS

Reliable Durability: Creates a monolithic, elastomeric water-resistive barrier for enhanced protection.
All-Weather Application: Can be applied at temperatures as low as 25°F and cures at temperatures as low as 32°F—ideal for challenging environments.
Rain-Resistant: Can be immediately exposed to precipitation and applied on damp substrates.
Vapor Permeable: Allows moisture to escape while maintaining airtight integrity.
Extended Exposure: Withstands normal weather conditions for up to 12 months.
Warranty Guard: Combine with the DensElement® Barrier System for a single-source limited warranty.

Product Specifications

PERFORMANCE ATTRIBUTES

Hardness, Shore A	19-23
Tensile Strength	X>90 degrees
Elongation at Break	>400% (ASTM D 412)
Transfer Free Time	< 1 hour (at room temperature and 50% relative humidity)
Water Vapor Transmission	10 Perms (ASTM E96 Method A) 14 Perms (ASTM E96 Method B)
Surface Burning Characteristics	1 year in properly stored, unopened original packaging
Surface Skin/Non-Wet Transfer Time	Class A (ASTM E84) Flame Spread = 25 Smoke Developed = 10

PHYSICAL ATTRIBUTES

Form	Viscous liquid, yellow color, mild odor
Specific Gravity	1.26–1.33
Weight	10.5–11.5 (lbs/gallon)
Total Solids	Approx. 99%
VOC Content	<30 (g/L)
Shelf Life	1 year in properly stored, unopened original packaging
Surface Skin/Non-Wet Transfer Time	2–4 (hrs)