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Question DetailsAsked on 8/19/2013

do I really need larger downspouts for my guttering?

Replacing 35 yr old galvanized gutters with seamless aluminum. Old downspouts are 2x3, contractors are pushing 3x4.

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2 Answers

0
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2x3 is pretty small for any area that receives heavy rains or if you have leaves on your roof that wash/blow into the gutters and can plug them. I have 2-1/2 inch square downspouts and have had slight gutter overflow in downpours, and we do not have true cloudburst downpours like midwest thunderstorms or in hurricanes.

You need to consider what happens if your gutters overflow - will it damage fascia boards, damage underlying flower beds, flood your basement, etc - but for the cost difference I would go with the larger ones, especially if your gutters are singel-ended - only one downspout per gutter (which should be avoided if at all possible).

Answered 6 years ago by LCD

0
Votes

You must be refering to 5" k aluminum gutters. Yes a 3" by 4" down is the norm for any modern gutter reinstall. On resale a 2by3 would appear dated. Consider the bottom of the trough on a 5" gutter is 3 1/4" and a 3" by 4" down works only one way as an A ie a 90 degree turn the long way. So perhaps you might consider 6" gutters with a 4" bottom of the gutter. For sugestions on gutter thickness and hanging tips see my blogs.

Jim Casper Gutter and Gutter Cover Contractor

ps I charge only 1 dollar a foot more for 6" gutter installed

Source: www.heartlandmastershield.com

Answered 6 years ago by jccasper




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