Waterproofing & airtight envelope
Layered control of water, air, and vapor prevents leakage, condensation, and heat loss.
Roofs, walls, basements, and openings use different principles including drainage slopes, membranes, drainage boards, and sealants. No single product solves every junction.
Water, air, vapor, and insulation layers are ordered according to climate. Reversing that order can trap condensation inside assemblies.
Flat roofs, green roofs, and below-grade waterproofing are recurrent failure points, so joints and repair access belong in the design.
Air tests, flood tests, and thermal imaging increasingly commission envelope quality. Hidden layers determine service life.
