EXTERIOR
How to Estimate Exterior Window Trim Replacement
Contractor method to estimate window trim replacement by trim length, material, condition and labor with clear materials and labor lines.
Exterior window trim frames the window and keeps water out, and replacing it is a linear-foot job that depends on material and how much rot is underneath. This guide covers measuring the trim runs, choosing the material, and pricing the removal and repair of damaged framing.
THE SHORT ANSWER
How to Estimate Exterior Window Trim Replacement
40 ft of PVC trim in moderate condition with 6 labor hours at $60 totals about $456.
Measure the trim runs
Trim prices by linear foot, so measure each side of the window. Add the sill and the header, and count every window you are quoting.
- Trim length
- Material
- Condition
- Labor hours
PVC vs wood
PVC trim is low-maintenance and slightly more per foot; wood is cheaper but needs priming and painting. Match the material to the house and the homeowner's expectations.
Look for rot behind the trim
Rotting trim usually hides rot in the framing behind it. Price removal and inspect the substrate before you quote replacement.
Caulk and finish to close it out
A trim job is not done until it is caulked and painted or sealed. Include the finish so the seams stay watertight.