How much roof overhang?

[NonnieNonna]

If by a single slant roof, you mean a roof that does not form a "/\\" but is a single "\\", it would depend on the slope of the roof if it would work or not. If you are putting a good slope on the roof to shed snow, then he may be right about the amount of overhang you would need. If the roof is almost flat, it may work OK.

I believe that a 5:12 slope (5" up for each 12" over) on the roof is the least you would want for any snow. At a 5:12 you would need over 2' of over hang to stop a rain that is coming down at a 45 degree slant. Any decent breeze will blow rain at a greater angle than that.

Having a narrow and long vent on each side of the coop will encourage air flow through the coop. A single vent on on wall - even if it is the entire length of the coop may not promote air to flow through the coop. For example, if I have all the windows on one side of my house open, there is almost no air flow through the house, but the minute I open a single window on the opposite side of the house, I get a gale blowing through.

Just my thoughts, and I have been known to be wrong.

Do you think 2’ overhang would work for 3:12 pitch? I’m planning the coop and had the same question.

 

[David61]

18" is the minimum i will ever use. Two foot over hang next time i build.