Porch roof with a leak

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  #1  
Old 01-16-08, 07:32 PM
J
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Porch roof with a leak

I just built a porch with a nearly flat roof. The roof spans twelve foot from the house and only drops about four inches. I did all of the flashing and shingeling. It rained that night and bam! Two leaks. The porch is sitting right where the valley comes down in the "L" shape of the house. One leak is coming from where the roof of the house continues to slope onto the porch roof and the other where the porch and the house meet and there is the sloping gap of the porch roof and the house roof.. I don't know if this makes since but I'm getting discouraged and lost.


James
 
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Old 01-16-08, 08:29 PM
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>>I just built a porch with a nearly flat roof.

Therein lies the problem. Your roof is too flat for shingles. In most cases, 2:12 is the minimum slope, and even then you have to specially underlay the roof sheathing. 2:12 means 24" of drop in 12 feet. You have 4" of drop. Get the picture?
 
 

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