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211Racing's avatar
211Racing
Explorer
May 27, 2022

New Roof Time! Can I just layer over the existing plywood?

Got an old, unkempt 2002 Tioga 25' Class C RV recently (really cheap). Fixed the mechanical issues. Now going after the roof. Whatever they last used for a roof membrane, it is almost completely go...
RLS7201's avatar
RLS7201
Explorer II
May 27, 2022
The adhesives don't stick well to the old surfaces. Most times new lauan is used to get a good bond for the new roof membrane.
Dicor has been punishing RVers for years. Given time it cracks and leaks. If you're going to all that work spend a little more and use Sikaflex 715 for sealing around your EPDM roof. Sikaflex doesn't harden and crack like Dicor.


Richard

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