I have a window that slides to the side, and each time temperature outside drops below 0*C it freezes and there is no way to open it (not that there is ice all over it, just moisture from the room freezes somewhere inside I guess). Are there any (easy) solutions to prevent freezing or making it open when needed?

  • What is the material of the window sash and frame (ie. Vinyl, wood, metal) and is it painted?
    – ChrisP
    Commented Dec 6, 2010 at 20:21
  • @ChrisP Looks like a vinyl frame and window (metal wrapped into vinyl?). Not painted.
    – serg
    Commented Dec 7, 2010 at 0:27

3 Answers 3


My suggestion would be to pull out the window and clean everything really well to make sure nothing is gumming things up. Then I would use a clean rag and wipe all the areas where the window contacts the frame with a good quality silicone lubricant. A little goes a long way with silicone lubricant, you don't need to saturate things with a direct blast. I would avoid wd-40, or other cheap oil sprays, it could make things worse.

  • Chris is absolutely right on. Always use a dry silicone spray lube, never an oil based or WD40. This is very common in bathrooms where a lot of condensation forms on the windows. Wipe excessive moisture off the windows and frame whenever possible. Commented Dec 8, 2010 at 8:40
  • Really clean it well on a nice day, and flood with silicone lubricant? The stuff is quite hydrophobic so could prevent ice jams. Commented Apr 19, 2018 at 18:49

As a QA Engineer for a local window and door company, researching some topics I stumbled across this post. Please check the humidity levels in the home (hopefully not too high). Make sure there is adequate air flow (open vents & curtains) in the room. And most of all, check the perimeter of the slider sash (operating/sliding portion) for a tight enough seal. This may include checking weatherstripping and critical measurements of the frame channel/pocket to slider/sash profile thickness.

Regards, Sunny H


One workaround is to install a heating cable along the perimeter. When you need to open the window you heat it up so it unfreezes.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.