Flashing Transition two roof pitches

Old 05-27-08, 05:11 PM
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Flashing Transition two roof pitches

I am building a shed with the main roof is a 12/12 pitch with a porch that ties in with a 4/12 pitch about 16 inches above the sil plate. I have the sheathing installed and now ready to apply asphalt shingles. How should I flash where the two roofs join?
Old 05-28-08, 10:35 AM
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If you can get your new shingles to go under the old properly, then flashing is not necessary - though it's probably a good idea to run flashing under the old and slightly over the new where they join. Flashing is cheap - and, combined with roofing cement, will help ensure no leaks in the future....

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