Two Gutters Needed?


Old 03-20-12, 09:34 AM
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Two Gutters Needed?


I'm about to begin a garage repair/repaint project. I may need to replace some guttering, but I wanted to run it by those with experience.

My garage has damaged guttering on the north side, and the fascia is ruined as well, likely from the gutter problem. I was going to replace both.


The garage roof ( which is metal ) ends right over a carport, also metal roofed, which has it's own brand new gutter.

Do I need both gutters? Or is it safe to let the water run off the garage onto the carport's roof, and down into it's gutter?

Any thoughts, pitfalls, etc?

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Old 03-25-12, 06:41 PM
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If there were 2 gutters there, I would leave it that way. You have to fix the fascia board anyway.
Old 03-26-12, 04:32 AM
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I agree with Pulpo, having the water from two separate roof lines empty into one gutter may overpower the gutter on the carport. I would replace the gutter on the garage and extend its own downspouts away from the carport roof so they don't intermingle water.
Old 04-24-12, 10:30 AM
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Also keep in mind the impact of the water from one surface hitting another. It may not be so much an issue with a metal roof as it would with a shingled roof, but any fasters near or at the impact site may prematurely start to leak or rot/rust.

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