foam sealant

Expanding crack plugger

Foam sealant is an expanding polyurethane product used to fill gaps, cracks, and cavities in construction.

It comes in pressurized cans and expands as it cures, creating an airtight, insulating seal: I used foam sealant around the window frame to stop drafts.

Common applications include sealing around pipes, electrical boxes, and foundation gaps.

Opposites
sealant type

foam sealantsilicone caulk

Flexible waterproofing compound

concrete · putty · mortar · wood filler · weatherstripping

sealing vs opening

foam sealantvent

Opening for airflow

drain · opening · hole · gap · perforation

material state

foam sealantsolid block

Continuous three-dimensional mass

Family

foam, sealant, foams, foamed, foaming, foamy, seal, seals, sealed

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G