DOW 157913 20oz GREAT STUFF Big Gap Filler (Case of 12)

High quality expanding urethane foam designed to fill large areas quickly and permanently. Uses include filling holes, cracks, or gaps that require a complete airtight and waterproof seal but are too large to be filled with ordinary caulk. The foam expands approximately 3 times its original volume, is tack free in approximately 45 minutes, and fully cured in 12 hours. Dispensing apparatus included with each can. UL classified. No CFC’s.

Features:

• 20 oz,For voids larger than 2″,expands 60%,1″ equal to R5 value
• Forms a permanent weather-tight seal to minimize drafts and insect infestation
• Bonds to wood, drywall,metal, masonry, glass, and most plastics, Interior/exterior use
• Tack free in six minutes-trims in 30 minutes,Foam elasticity allows for movement/shifting within a structure from winter to summer
• Paintable, stainable and sandable, Cures rigid, UL classified.

Differences Between Latex and Polyurethane Foam Sealant

There are two key differences between latex foam and GREAT STUFF™ polyurethane foam sealant:

• Latex foams are typically “open cell” and, as a result, can take on water. In fact, the same properties that allow you to wash latex foam off your hands with water also mean that the cured foam can absorb water. This can cause wood rot or deterioration in areas where wet latex foam is next to wood, such as a window frame. In contrast, GREAT STUFF™ is a closed-cell foam. It forms a water-resistant outer skin when cured.
• Latex foam does not expand. GREAT STUFF™ expands to thoroughly fill all voids and cavities making it an ideal air sealant.

Directions

• • Shake can vigorously for 30 seconds before use.
  • Screw threaded end of straw assembly securely onto valve.

Dispense slowly. If foam does not flow easily, do not force from can.

• Familiarize yourself with foam by practicing on newspaper.
• Fill openings less than 50% full. For large voids, mist water between foam applications to speed curing. Overfilling can buckle substrates.
• Foam is tack-free in about 5-10 minutes and cures in eight hours.
• Cured foam can be trimmed, shaped, sanded, painted or stained. To trim, use a sharp knife or serrated blade.
• Can will seal itself shut if allowed to sit unused for over two hours and may not be restarted. Expect one-time use.

Manufacturer Part Number: 157913

*This product ships directly from Dow and can only ship to business addresses*