Tools & materials
- Stiff putty knife or window zipper tool
- Rubber mallet
- Vacuum
- Silicone spray lubricant
- Rags
Step by step
- Step 1
Unlock the window and look for paint bridging the sash and frame, inside and out.
- Step 2
Slide the putty knife or window zipper along every seam to cut through the paint.
- Step 3
Tap gently around the sash frame with a rubber mallet (or a hammer and wood block).
- Step 4
Vacuum and wipe the tracks clean of dirt and debris.
- Step 5
Spray silicone lubricant lightly into the tracks and on the sides of the sash, then work it up and down.
When to stop and call ProFix
If you see any of these, stop and call us:
- The glass is cracked or the sash is rotted
- Sash cords or balances are broken (window won't stay up)
- The frame is warped from water damage
- It's a fire escape or bedroom egress window that must open
Not in the mood to DIY? A ProFix pro can handle it for you in Chicago Metro and Dallas–Fort Worth, with a written price before work starts.
Related guides
These guides are general information for simple repairs. You're responsible for your own safety and for following local codes and your lease or HOA rules. When in doubt, stop and call a licensed professional. All DIY guides