Thor Forums

[JamieGeek]

Having used some on the RV in the past I would suggest Flex Seal. I know it sounds funny to use some of the "as seen on TV" stuff but it is very similar to the stuff sprayed in car wheelwells to seal and dampen noise.

You can even get it by the bucket! (Amazon).

In my case I used it to seal up the area behind the taillights.