STI BlazeStop WF300 Intumescent Firestop Caulk - 20 oz
PARTWF320
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About this item
Type WF300 Caulk is a latex based, high solids firestop caulk. This material, when properly installed, effectively seals penetration openings in wood frame construction against the spread of fire, smoke and combustion byproducts. Type WF300 Caulk is a single stage intumescent. When exposed to elevated temperatures, WF300 expands rapidly to seal off voids left by the burning or melting of combustible materials. Type WF300 Caulk is storage stable (when stored according to manufacturer’s recommendations) and will not separate or shrink when dried. WF300 adheres tenaciously to common construction materials such as lumber and gypsum board as well as typical penetrant materials.
Features
Water based: Easy installation, cleanup and disposal
Intumescent: Expands with heat
Water-resistant: Will not re-emulsify
Installer friendly, easily applies with standard caulking gun
Suitable for combustible and non-combustible penetrants
Tested for up to 3 hours of fire exposure when tested to ASTM E814/UL147
Paintable
20 oz sausage
Make & Model
Brand
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Part #
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Specifications
Color Family
White
Certifications & Standards
TAA/BAA Compliant
1
Packaging Dimensions
Height
7.800
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