Product Review
Dow GREAT STUFF Gaps & Cracks 341557 is a polyurethane-based insulating foam sealant that fills, air-seals and insulates small gaps (less than 1 inch) inside or out. But you probably guessed as much from the name. What you might not have guessed is how easy it is to use or how it expands to take the shape of cracks and voids to form a durable, airtight, and water-resistant bond that eliminates unwanted airflow and helps reduce condensation.
The straw foam Great stuff loses between 10 to 15% of its Yield through the straw, whereas the Pro Gun draws every bit of foam from the can and is much quicker on the job. Time and Yield are essential ingredients for profit.
Features:
- Forms a permanent weather-tight seal to minimize drafts and insect infestation
- Exceptional adhesion to building materials
- Interior or exterior use
- Tack free in 6 minutes; Trims in 30 minutes
- Foam elasticity allows for movement/shifting within a structure
- Paintable, stainable and sandable
- Cream colored foam
- Cures rigid
- All-direction dispensing
- UL Classified
- Fills, seals and insulates gaps up to 3"
- Bonds to most building materials
- High yield-up to 1,000 linear ft x 3/8" bead
- Controlled expansion
- Quick cure and trim
- One can = 26 quart tubes of caulk
Applications: Filling, sealing and insulating of joints, voids, and cavities. Also approved for use as an alternative fi reblocking material in indoor and outdoor-to-indoor plumbing, HVAC, gas and electrical penetrations.
