butyl tape under gutter or not?
OK so I am putting down new rubber on my roof & I'm trying to figure out where to place the butyl tape when it come to the sides of the rv. When I pulled the old roof off there was butyl between the m...
Forum Discussion
The only reason to install Butyl under the EPDM rubber and that metal is to prevent possible rubbing and tearing from the metal edge. I have done hundreds of RV roofs over 36 years and have never installed butyl under Rubber or any other roof covering. Always on top the Rubber and the appliance. It will not hurt to do it the original way, but a waste of money on the Butyl. Doug
