Wood Frame Firestop Caulk - Red MPN:WF305
Wood Frame Firestop Caulk - Red
Protect your building's integrity with the Wood Frame Firestop Caulk from STI. This red, latex-based caulk is designed to seal gaps and joints in wood-framed construction, providing a 3-hour fire rating and intumescent fire resistance. Easy to apply with a caulk gun, it expands 5 times its original volume to fill even the smallest openings. Suitable for use on cables, ducts, head of wall, metal and plastic pipes, and other common construction surfaces. With a maximum service temperature of 185°F and a drying time of just 2 hours, this caulk is perfect for commercial and residential construction projects.
Top product features:
- Firestop Caulk provides a 3-hour fire rating
- It expands 5 times its original volume when heated to 350 Degrees F
- It has a flame spread index of 0 and a flame spread rating of Class A
Top product applications:
- Cables
- Duct
- Head of wall
Firestop Caulk, Application Method Caulk Gun, Color Red, Container Size 5 gal, Container Type Pail, Drying Time 2 hr, Expansion Temperature 350 Degrees F, Expansion Volume 5X, Fire Rating 3 hr, Fire Resistance Type Intumescent, Firestop Type Sealant/Caulk, Flame Spread Index 0, Flame Spread Rating Class A, For Material Type All Common Construction Surfaces, For Use On Cables, Duct, Head of Wall, Metal Pipe, Plastic Pipe, Formulation Latex Based, Maximum Service Temperature 185 Degrees F
Additional Information
- Country of Origin: US
- Drop Ship Item: Yes
- Blind Ship Eligible: No
- LTL Freight Required: No
- Lead Time: Ships in 3 days
- Minimum Order Quantity: 1
- Unit of Measure: EA
- Package Length: 14.80
- Package Width: 13.00
- Package Height: 13.00
- Package Weight: 55.00
- California Prop 65 Warning: WARNING: Cancer - www.P65Warnings.ca.gov
Product info last updated on February 3, 2026 12:54am UTC
Category: Facility and Worksite Safety