Does all the old butyl tape need to come off?
Getting ready to leave on vacation tomorrow and noticed the vent in the cabover was leaking. I stuck eternabond tape over the old butyl tape as I was advised it was alright, but it didn't stick proper...
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...and I hope it goes without saying: When you remove excess Butyl, be sure not to damage the roof material (rubber, TPO, EPDM, ...)
