Tubular rubber, vinyl, or silicone is an effective air barrier; versions made of a narrow sponge rubber or vinyl tubing come attached to a wood or metal mounting strip. Silicone types are usually inserted into milled grooves.
Where It Goes
At the base of doors and windows; top or bottom of a window sash; bottom of a door; between a door and its jamb.
How to Install It
Peel and stick, or fasten with screws through slot holes; silicone seals are pressed into a channel you create with a router.