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Henry Company
Air-Bloc® 21 Air & Vapor Barrier and Insulation Adhesive - Trowel Grade - 5 Gallon Pail
QXO product C-257167 · 1 options
Selected: HEN AIR-BLOC 21 BARRIER 5GL
QXO SKU 257167 · Product number HENAB21TG5
Free, no-obligation quote. Our team confirms local availability, required quantities, compatible components, and installation pricing.
Selected option specifications
- UOM
- PLT|PL
- Item Weight
- 50
- Algae Resistance
- No
- Applicable Standards
- ASTM E96 ASTM D412 ASTM D3111 ASTM E2178
About this product
Air-Bloc® 21 is a trowel consistency, solvent-type, synthetic rubber-based insulation adhesive formulated for easy application on a range of construction surfaces. Air-Bloc® 21 is designed to provide an effective air and vapor barrier when used as a full bed adhesive in conjunction with rigid foam or semi-rigid paper-faced insulation. Air-Bloc® 21FR is used as a full bed adhesive in conjunction with rigid foam or semi-rigid paper-faced insulation.



