How to Seal Gaps Around Pipes
- 1). Place the tip of the foam sealant tin's attached straw into the gap between the pipe and surrounding material. Slowly squeeze the tin's nozzle to expel the sealant from the tin into the gap.
- 2). Move the tip of the straw around the gap, ensuring that the gap is filled roughly half ways. After the foam sealant cures, it will expand and fully fill the gap. Allow eight hours for the sealant to fully cure.
- 3). Cut away any excess foam sealant that has oozed out of the gap with a utility knife.