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Old 12-05-2009, 11:02 PM   #1
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Roof Roll

Okay, let's suppose just for a minute that someone was really inexperienced and hadn't read all about the horrors of roof roll (until coming to this forum just now) and had decided to put it up over a patio a few days ago.

I'm not saying who this person is, but . . . .

What is the spacing requirement for the short nails that hold down the seams between rolls?

Would that be the same spacing for the nails through the drip edge?

This is in Palmdale, California (60 mi north of Los Angeles).



Last edited by JohnHamishWatso; 12-05-2009 at 11:07 PM.
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Old 12-06-2009, 09:01 PM   #2
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Just take it off and go to a roofing supply house and ask for nailable base, interply, and cap sheet of SBS roofing. Use something like Ultra19 to seal any side laps. Best to cut the material so each course runs all the way across.
Use commercial drip-edge. Prime the metal with asphalt primer and let it dry before installing the roof. Buy a painter's heat gun to soften the asphalt on the rolls for joints, and the metal.
Against the norm here, but I like to run the material about an 1" or so past the metal, and heat it a bit and make it sag somewhat, over the edge. Keeps the water from wicking under the roof if done to about 45 degrees.

Doing this will save on a lot of wood damage and replacement in a year.


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