Window Replacement Checklist

1. Preparation

• Measure existing window frame (height, width, depth)
• Gather tools: drill, pry bar, utility knife, caulk gun, shims, flashing tape, spray foam, silicone caulk
• Lay down drop cloths and wear safety gear

2. Remove Old Window

• Remove interior trim or stops with pry bar/knife
• Cut through caulk or paint sealing window
• Unscrew or pry out old window carefully
• Clean opening of debris, nails, and old caulk

3. Prepare Opening

• Inspect for rot or damage; repair as needed
• Apply flashing tape around sill and sides
• Dry-fit new window to confirm alignment

4. Install New Window

• Insert window into opening from outside
• Use shims to level and square window
• Secure with screws/nails at manufacturer’s points
• Test operation (open/close smoothly)

5. Seal & Insulate

• Apply low-expansion spray foam insulation around frame gaps
• Caulk exterior edges with silicone caulk
• Add backer rod/weatherstripping if needed

6. Finish Interior

• Replace or install trim around window
• Fill nail holes with wood filler and paint
• Clean glass and test functionality

Tips:

• Always check manufacturer’s instructions for specific installation details.
• Have a helper for lifting heavy windows.
• Waterproofing is critical—take extra care with flashing and caulk.

Risks:

• Poor sealing can cause leaks and rot.
• Incorrect leveling may prevent window from opening/closing properly.

This checklist is designed to be print-friendly and practical for on-site use.