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Glossary

Sealant

A flexible, polymer-based elastomeric material that is used in the assembly of the building enclosure to seal gaps, seams, or joints, making them waterproof or airtight (as part of the air or water control layers) or to provide a clean finish. Sealants are typically applied wet and may be tooled before curing to form a durable but flexible seal.

Variant: Caulking

Related term: Gasket