Where to Buy Dow

Extruded polystyrene rigid foam board offering consistent thermal resistance and moisture resistance. Used as continuous insulation in below-grade, wall, and roofing applications where durability against water is required.

Two-component polyurethane foam applied on site that expands and cures in place to provide insulation and air sealing, available in open-cell and closed-cell formulations. Used in commercial walls, roofs, and cavities for thermal resistance and air barrier continuity.

Membrane and coating systems applied to the building envelope to control the passage of air and water vapor through walls, roofs, and floors. Used in commercial construction to reduce air leakage, manage moisture, and improve energy performance, available as fluid-applied, self-adhered sheet, or mechanically fastened products.

Sealants and caulk are elastomeric materials applied to joints and gaps to create a weather-resistant, air-tight, or water-tight seal. They are used in commercial construction around windows, doors, expansion joints, and building envelope penetrations.

Elastomeric gaskets, setting blocks, and sealants used to seat, cushion, and weatherproof glass within window, curtain wall, and storefront framing. Provide watertight and airtight seals and accommodate movement between glass and frame.