What is the preferred method of sealing new vent?
Last week I was working on removing the old lap sealant around the various vents and stuff on the roof, and reapplying dicor lap sealant.
While I had the sealant off, it occurred to me to be the perfect time to put a fantastic fan over the shower, in place of the noisy small fan...
I figured once I have the old one up and the electrical connections made, I'd run some dicor sealant around the opening, screw it down, and lap seal over the flange and screw holes...
The guy at the RV shop (who I trust) said they use butyl tape between the flange and the roof, then dicor lap sealant over the flange and screws. He said they get a good reliable seal, and if the vent has to be removed it is easier to do (avoiding damaging the EDPM).
The directions for the fan/vent say to use their gasket around the flange, followed by lap sealant over the seam and screw holes...
I was just curious, what's the preferred method of people here?
Dodge Ram dually laramie 4x4 w/jake, B&W, Brakesmart.
Kit Patio Hauler 394F toyhauler 5th wheel
Camo 680 Rincon, Green 500 Foreman, Blk twincam Roadking