STI Firestop
BlazeStop WF Intumescent Caulk
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BlazeStop® WF300 Intumescent Firestop Caulk is a latex-based firestop caulk designed for residential wood frame construction. WF300 Caulk is tested for addressing penetrations through wood/frame construction such as wood stud walls and floor/ceiling assemblies. Under fire exposure, WF300 expands to up to four times its original volume.
| SKU | STI-WF |
|---|---|
| Manufacturer | STI Firestop |
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/UL1479
Suitable for combustible and non-combustible penetrants
Tested for up to 3 Hours of fire exposure when tested to ASTM E814/UL1479