What is the best way to seal around windows?

Bryan Squirrell
Updated: Aug. 6, 2020

I took off the trim around a sliding door during the summer in search of a pesky cricket, I found the cricket but I also found big gaps between window and frame work, it looks like there might be caulking around windows and door on the outside. Now I'm wondering if there is any insulation around any of the  windows and doors that were all installed about ten years ago. My question is should I stuff the gaps with rockwool and seal it with tape on the inside?  Any suggestions will help.

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