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1

Solder is certainly the way to go for the best joints, but given that you are using galvanized steel, its also a bit of an overkill as that joint will outlast the rest of the gutter by a lot (unless you're painting it). Solder will not increase any rusting as it does not remove the galvanized coating. Spot welding or welding does and would. Rivets and ...


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My bet is that this is your problem: The gutters on the sides of the porch are connected at 90-degree angles to gutters going along the main house. So the volume of water in those gutters interacts with the volume of water in the porch gutters. You've simply got too much water for the gutter to handle, even though you've got a larger gutter and bigger ...


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The normal method is aluminium pop-rivets and "roof and gutter" silicone. such joints seem to last the life of the gutter.


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Please post a picture from above, showing how the old shingles and roof panels align with the gutter in terms of height and reach. Since the metal roof panels possibly sit a bit higher than normal and the panels likely reach past the drip edge of the old shingles, there is possibly too little clearance for water rushing down the roof at high speed to be ...


2

would this kind of flange stop the water from flowing inward onto the porch? It certainly would. You can probably find flashing already formed into the Z-shape you need in the Gutter and Downspout section of a big box home supply store. If not, you'll need to find something close and bend it a little. Note that it is easier to relieve or partially straighten ...


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