🪟 Window & Door Installation Checklist

Windows and exterior doors live or die by flashing order and air sealing — both invisible after trim. Verify the sequence, then punch the fit and finish. Each of the 12 checks below tells you what 'pass' actually means — cited to ASTM AAMA / IRC — so you catch bad workmanship while you still have payment leverage.

Repair or replace?

Run the checklist above first. If it fails on multiple items, price both paths before you decide.

🔧 Repair path

See what a targeted repair typically costs.

🔄 Replace path

See the full replacement range for your ZIP.

Next steps

🧾 Audit Your Quote

Check the numbers before the work starts — then verify with this checklist.

🧮 Window Replacement Cost

Estimate the full project cost first.

❓ Window Replacement Q&A

Common questions and honest answers about this project type.

🤝 Get 2–3 Free Local Quotes

Compare bids, then audit the winner.