samsterid Posted April 29, 2018 Share Posted April 29, 2018 (edited) Re-roofing our 1986 Dolphin with EPDM liquid roof soon. We removed all vents and noticed there are 4 extra strips or shims made of 1.5 inch x 5/8 thick plywood on top of each support where the vents mount. So the vents end up being installed about 3/4 of an inch above the plywood level of the roof. Does anyone know why? Is it so water drains away from the vents? A "screw receiver" for mounting? It makes walking on the roof seem pretty dicey - all that flexing of the aluminum between the vents. Plus puddles during rain are the norm between vents after a while. Is there something missing from our roof structure between the vents and sidewalls? Or should the vent strips not be there? Thanks for any help . . . Sam Edited April 29, 2018 by samsterid Quote Link to comment Share on other sites More sharing options...
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