Roof pitch and overhang?

[RESQME49]

What is everyone using for roof pitch? 6/12, 7/12? And how much overhang do you have?

 

[cavemanrich]

All depends on your location, and snow load. Also size of span. and size of rafters.
6-12 should work well for most coops. Have at least 1 foot overhang for 2 reasons. Keep water out,, as well as off the sidewalls. Keep ventilation on top between the rafters.

WISHING YOU BEST,,,,,,,,,,,,,,,,,,,,,,,,,,

 

[saysfaa]

Mine is between 3/12 and 4/12. The builder made it steep enough to get my absolute minimum eave width while using full sheets of 4x8 decking.

I have 9" overhang. I wanted 12" but accepted 9" to simplify construction and lower costs. If I didn't need it to look like a typical shed instead of a chicken coop, I would want wider eaves than 12"

I'm happy with the pitch. The span is too short to need to worry about snow load, even in my fairly snowy climate. It is actually better inside the coop when it has snow on it.

We shingled it ourselves and liked it easier to walk on and keep tools from sliding off than steeper roofs we've worked on.

 

[DobieLover]

What is everyone using for roof pitch? 6/12, 7/12? And how much overhang do you have?

I put a 3.5/12 pitch on my run (minimum for asphalt shingles is 2/12).

The pitch on the coop was already established on the shed I converted. I'm guessing it's 4/12 on the front and 5/12 on the back.
I sistered up the rafters to get 2' overhangs and installed fly rafters 2' out.

I LOVE the huge overhangs. When it's pouring down rain, I can walk under there and stay dry. And I've found the chickens sheltering there more than once.

 

[U_Stormcrow]

5/12 and at least a foot.

If you go to the big box store, or online, and you start looking at mfg websites, you will find that the shallowest slope anyone will warrant their products for (absent use of special materials and construction methods, like peel and stick elastomeric underlayments) is 3/12.

I do have one building with a 3/12 pitch. It was intended to be temporary. You know how that goes...

 

[3KillerBs]

Two different pitches to make the clearstory. Overhangs are between 2 and 4 feet.

A climate with more snow should use a steeper pitch than our lower one.

 

[Egghead_Jr]

4/12 or 5/12 pitch is recommended for accelerated air flow when venting top of coop. A vented 5/12 pitch increases volume of air flow by nearly 30% compared to a 3/12 pitch.

Natural convection is increased air flow where the warmer air is vented on the high end of roof which creates a vacuum sucking fresh air in along the lower roof line vents. Prevailing wind side, location of vents and pitch of roof are the main controlling factors as to how much volume of air is passing through. Roof pitch also controls how much the fresh air will mix with the stale air in the coop. Too shallow of a pitch reduces volume of air flow and too steep of a pitch reduces the mixing of fresh air with coop air. Think of it as a fast moving river with no eddies apposed to a slower flow with many current eddies. These circular currents bottom side of air stream mixes the ammonia and moisture ridden air of coop into the air stream exiting top vents of roof line. Thus maintaining a dry coop with clean air. A single slant 4/12 or 5/12 roof with top and bottom vents is all you'll need.

 

[RESQME49]

Perfect. Its a typical house style gable roof. Carolina coops style. 8 foot span. Im thinking 6/12 for more pitch and headroom. And sounds like a solid foot it is of overhang :-D

 

[aart]

And sounds like a solid foot it is of overhang

The bigger the better, IMO.

 

[3KillerBs]

The bigger the better, IMO.

Think of where you might want a roof overhead while attending to your chickens or gathering eggs and extend it more there.