Close gaps around pipes
Gaps around water and debris pipes leading to exterior walls can let in a lot of air. Great Stuff Big Gap Filler expands to take the form of cracks and gaps 1.0 in or larger, forming an airtight, water-resistant seal that prevents drafts and keeps the bugs.

Ideal for plumbing and HVAC.
The airtight seal prevents air leakage and energy loss where pipes and grates exit through the exterior walls. It has exceptional adhesion to building materials and can be sanded, painted or dyed.

Easy to reach with straw applicator.
Fill large gaps around your home and isolate hard-to-reach areas with this straw applicator foam. It comes ready to use with no additional purchase required

Further expansion, fills large gaps
Due to its larger foam expansion characteristics, Big Gap Filler is an ideal choice for filling holes over 1.0 in, whether you're working inside or outside your home.