This materials, sometimes manufactured from polyvinyl chloride (PVC), is a versatile seal utilized to the perimeters of doorways to forestall air and water infiltration. It is available in varied kinds, together with foam tapes, bulb seals, and felt-lined strips, every designed for particular hole sizes and door sorts. A standard instance is the compression seal utilized to the underside of a door, making a barrier when the door is closed.
Efficient sealing improves vitality effectivity by decreasing drafts, decreasing heating and cooling prices, and enhancing indoor consolation. It additionally minimizes noise penetration and protects in opposition to moisture injury, which might result in mould development and structural points. Traditionally, supplies like felt and rubber had been used, however developments in polymer know-how have made PVC a preferred selection resulting from its sturdiness, climate resistance, and affordability.