Window and Door Replacement
Even the highest-quality window can fail prematurely if installed poorly. The installation — flashing, air sealing, shimming, and finishing — determines whether the window performs as designed or becomes a source of moisture infiltration and energy loss.
Rough opening preparation is foundational. The rough opening must be square, plumb, and properly sized. Installing windows into out-of-square openings causes operating problems and premature weatherstripping wear.
Energy Efficiency and Style
Sill flashing — a continuous waterproofing at the bottom of the rough opening — is critical in full-frame installation. Water that infiltrates past the exterior seal or flashing must drain out through the sill, not into the wall cavity.
Integration with the weather-resistant barrier (housewrap) determines whether the window installation is watertight. Proper integration involves specific taping sequences that create a drainage plane around the window.
Getting a Free Estimate
Insulation around the window frame prevents thermal bridging and air infiltration. Properly insulated window cavities — typically with low-expansion spray foam — maintain window performance in cold weather.
Interior trim execution affects how the window looks and whether it remains airtight at the interior face. Properly installed interior trim with sealed gap at the window frame maintains the air barrier from interior to exterior.
Ask contractors how they flash windows during full-frame installation. An experienced installer explains the drainage plane concept, head flashing integration, and interior air sealing method. Vague answers suggest limited expertise.