Does Caulking Around Windows Help?

Should windows be caulked on the outside? Yes, it's best to apply caulk to both the interior and exterior when installing new windows. This will seal any unwanted air leaks. Using a caulk gun will ensure you fill any gaps and get a clean line.

Where should you not caulk around windows?

Avoid caulking:
  • The window's weep hole: This small hole at the bottom of the exterior frame in windows allows moisture behind the window to exit through the frame. ...
  • Moveable parts: Caulking moving parts could seal your windows closed.

How often should you caulk around windows?

On average, caulk should last around five years, but that doesn't mean you shouldn't check every year or two. One sign that you may need to caulk again is if you have noticed drafts or your energy bills suddenly rise.

Robert Thorne

Robert Thorne

Automotive & Future Transportation Editor

Robert Thorne covers electric vehicle innovations, autonomous driving systems, global mobility trends, and automotive engineering developments.