Aluminum gutter questions


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Old 08-20-20, 03:22 PM
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Aluminum gutter questions

First time installing gutters but these 5" half rounds looked good. I'm confused about the fasteners, though. I'm using #10 Combo Shank hangers and I notice they have 6 - 1/8" holes for screws. Six seems like overkill if I anchor them in rafter ends (but what do I know). The hangers and gutters are painted, the rafters are 24" apart and the fascia is 1.5" thick. I should also mention that the gutters will get leaves but not snow and they don't have leaf guards:

1) What kind of screws can/should I use with aluminum? (only aluminum, coated, stainless, sheet metal,...)

2) If I anchor hangers into the rafter ends, how long should the screws be and do I need all six screws?

3) If I anchor hangers into the fascia, how long should the screws be?

I sure would appreciate any guidance that your experience could provide.

Thanx, Carl


 

Last edited by DeathValleyCarl; 08-20-20 at 04:08 PM.
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Old 08-20-20, 03:31 PM
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Can you post a picture of the hangers you're using?
 
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Old 08-20-20, 03:33 PM
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If your fascia is 1 1/2" thick you don't need to hit the rafters, and you can space the hangers as you like. I'd suggest a maximum of 32" apart. If you want to go 24" that's fine. You might want to snap a chalk line that is at the correct pitch, and set them to the chalk line. 1" galvanized screws will be fine. Doubtful you need 6 screws. Even 4 would be plenty, IMO. If you were up north and they could fill with ice you could always put them closer and use more screws.
 
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Old 08-20-20, 04:10 PM
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Uploaded picture of hanger
 
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Old 08-20-20, 04:13 PM
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I read that using galvanized with aluminum has a chemical reaction. Does the paint nullify that problem because it's a layer between?
 
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Old 08-20-20, 04:55 PM
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I have never seen a problem. The paint surely helps.
 
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Old 08-21-20, 05:07 AM
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Make sure the hangers are aluminum. Personally, for the small difference in price, I would use aluminum screws.
 
 

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