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Old 05-08-2012, 02:33 PM   #1
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Roof or stucco first?

I'm in need of a new roof (flat) and seriously considering a PVC membrane. The problem is I will also need to re-stucco (cementacious) in the next couple of years. I assume the roof membrane should wrap to the top of the parapet. Are there any special precautions or steps that should be taken during the re-roofing to prevent jeopardizing the integrity of the roof when the stucco is redone later?


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Old 05-08-2012, 03:26 PM   #2
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Membrane can go up the parapet wall but the coping or cap flashing should go over that.

Depending on how you do it, you shouldn't need to stucco that parapet wall.


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Old 05-08-2012, 05:37 PM   #3
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By code your flashing only has to go up 8" up the wall in this case parapet. put water cut off behind the pvc at the top of the flashing in the back side of it about a half inch wide or so , then install your term bar with calk bend for calk beat, if concrete use 1' 1/4" drypins reanchor each hole on term bar. Then calk top of term bar. after this install a stucco metal around the flashing and stucco when ever you can. always roof first save the house or building from further damage stucco is cosmetic not waterproofing

Last edited by Jc the roofer; 05-08-2012 at 05:41 PM.
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Old 05-09-2012, 01:49 PM   #4
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Thanks for the input. The parapets are only about 8" - 10" high so I intend to terminate the membrane atop the parapet rather than on it's face. I live in NM where we don't get lot's of moisture but the solar gain and temperature swings can cause a bit of heaving/movement.

Last edited by DJJF; 05-09-2012 at 01:52 PM.
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