What works great is "Great Stuff" spray insulating foam sealant that they sell in hardware stores, Home Depot, Lowes, etc.
If expands and fills in all the cracks and crevises (don't use too much)! It can also be trimmed if you go too far.
Just wear gloves. It is very sticky and will have to wear off your skin.
If expands and fills in all the cracks and crevises (don't use too much)! It can also be trimmed if you go too far.
Just wear gloves. It is very sticky and will have to wear off your skin.