Latest Discussions : Roofing & Siding


06:42AM | 06/23/04
Member Since: 05/31/04
4 lifetime posts
A picture may help here, but I will try to explain my situation.

I have an old garage with a roof that slopes from front to back. The side walls just go straight up about 14 feet creating a garage that looks like it has fins. In other words its like a normal flat roof building, but there are walls at the edges. If you have seen one of these before you can probably picture it.

The slope of the roof is about a 12/2. I am going to use roll roofing because of a limited budget. What is the best way to deal with these sidewalls so they don't leak? I already have some #30 felt on the desk and going up the walls and overlapping the top plate. The problem is avoiding air space where the sidewall meets the roof deck. I am afraid this area will get holes poked in it easily. I was thinking about cutting the felt at this point and lapping ice guard down the walls out onto the deck a couple of feet. Then I would nail flashing on top of all this before installing the roll roofing.

In this situation I will have ice on top of felt. Is this a big problem? Has anybody else delt with this problem?

I will try to post a picture later.



07:33AM | 06/23/04
Member Since: 07/01/03
549 lifetime posts
Many years ago I had a garage that looks like yours. The walls on either side are called parapets, and there are a number of ways to flash or cover them. As you said, it is difficult not to have a radius at the transition from vertical to the horizontal roof that does not cause a weak spot. My roof had it, and we just didn't walk on it. So, back in the day, I guess I didn't do this right.

Without any personal expertise in this area, I did a google search on "parapet flashing" and got a lot of alternative results. These use cants to support the transition, or other systems use a flasing to achieve a 90 degree angle.

Here are some of the results I came up with, and hope this gets you started. There are some REAL roofers on the BBS that can probably give more help." target="blank">http://lib" target="blank">


07:49PM | 06/23/04
Member Since: 05/31/04
4 lifetime posts
Thanks for links and proper term. At least now I know what to ask for. We'll see what happens this weekend.

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