Trying To Patch Flat Roof - Leak In Seam - Roofing/Siding - DIY Home Improvement | DIYChatroom

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Old 11-01-2011, 04:19 PM   #1
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trying to patch flat roof - leak in seam

I have a leak on my second floor ceiling so went to inspect the roof directly above it. It looks like part of a seam is loose and that water penetrating under the roof. To make things worse, there are dips and indentations that force the water to pool in sections (including this one).

I have no idea what material the roof is made from -- it's some kind of rolled roofing.

Since it's cold and it's been wet, I bought some Henry 208 rubber wet patch "muck" and started to coat the seams. I've included a picture (see attachment) to give you an idea of what I did to the seam -- that large patch to the left is a former patch. I did the thin line.

My questions are:
am I doing this correctly?
how much should I apply?
should I also add the mesh fabric to solidify the patch?
am I better off getting a new roof?

thanks in advance!
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trying to patch flat roof - leak in seam-roof.jpg  


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Old 11-02-2011, 04:06 AM   #2
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trying to patch flat roof - leak in seam

You are patching an improper installation and will be forever fighting an uphill battle. The photo appears to be asphaltic roll roofing with a granulated surface which is not designed nor recommended for flat surfaces. Flat roofs require conventional tar-and-gravel systems or the newer single membrane roof systems such as EPDM or PVC having heat welded or solvent welded seams. Patching tars are only temporary solutions.



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Old 11-02-2011, 11:25 PM   #3
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trying to patch flat roof - leak in seam

How much pitch does the roof have? You probably need a new roof, if your just trying to make it through winter, use some fiberglass mesh and tar the crap out of it, then get a new roof in the spring. Can we see a picture that is backed up a little bit farther. To see what is actually going on?
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