Tin Roof, Gutter, and Flashing

Old 04-06-05, 09:29 AM
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Tin Roof, Gutter, and Flashing

I have a tin standing seam roof which has had a gutter attached to it. The gutter needs to be repitched since water backs up on one side and then goes down the brick facade of the house. I was talking to an installation person who suggests not just repitching the gutter, but also adding a drip edge to the tin roof so the water flows more directly into the gutter. Is this a good idea and doable with a tin roof?
Old 04-06-05, 02:16 PM
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If pitch is the only reason for the gutters not performing properly...then re-pitching is fine.

Other possible issues are:
Undersized or inadequate number downspouts.
Undersized Gutter.
Blocked drainage.
Improper location (heavy runoff shoots over guttering if hung too low)

Adding a drip edge will be big deal if done properly. An eave detail for standing seam should have the end of the panels hooked over a formed lip in the edge metal so the drip edge actually serves two functions.. the first is obvious...the second is to anchor the ends of the panels.

If the gutter and downspouts are properly sized, hung and free of debris....and the panel ends extend beyond the fascia approx. 1"...all is well.
The main purpose of a drip edge is to protect the top edge of the fascia. Not so much to redirect runnoff.

Good Luck!
Old 04-06-05, 04:20 PM
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Your drip, the one that SHOULD have been installed when you got roofed, may only keep the water from the top of the fascia....it may also keep the water from destroying your soffits, running into wall areas where it can show up in windows, doors, and carpeting, etc. This is "generally speaking" as I can't see your specific problem from here, or the construction layout of your overhangs, soffits, walls, etc. from where I sit.

The lack of a drip edge doesn't necessarily mean you'll have problems. But all to often this simple little cheap section of metal means the difference between your gutters working as intended, or spending hundreds...or even thousands on correcting damage done because it was missing in action.

You might locate specs on your exact style of metal panel used, then compare it to what you actually have at the eve. All metal I've ever seen has flashing details specified in the installation instructions. Anything can be reworked.

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