Window Replacement Guide

Why windows matter during exterior work

Windows are one of the most important coordination points in a siding project. Replacing or reinstalling windows at the right time lets the weather barrier, flashing, trim, and siding tie together cleanly.

What to plan before installation

• Confirm whether windows are new construction, replacement, or reinstallation.

• Review sill pans, head flashing, trim profiles, and manufacturer requirements.

• Coordinate siding and paint so completed work is not cut open later.

VTV helps homeowners sequence window work with siding, dry rot repairs, trim, and exterior finishing so the finished envelope is cleaner, more durable, and easier to maintain.

Replacement windows and siding sequencing

When windows are replaced after new siding, the finished siding and trim may need to be cut back. That can disturb the weather barrier and create extra touchups. Planning windows before or during siding work makes it easier to flash and trim openings correctly.

What VTV checks around openings

• Existing rot, soft trim, missing flashing, and water staining.

• Whether the selected window type matches the wall assembly and siding scope.

• How the final trim, caulk, paint, and siding clearances will work together.