How do I explain ventilation to my contractor?

If you must have that design:

1. make the gable overhangs about 12" on each end. Gable vents would be very helpful.

2. close in the soffit on front and back with 1/2" hardware cloth before putting the fascia trim and wall sheathing in place.

3 Absolute minimal size IMO should be 4 x 8. That will maximize your floor space while taking advantage of the size of a sheet of plywood, and minimize the number of cuts.

4. Put 1/2" hdw cloth over window openings to allow you to open windows without letting predators in.

5. Swap out the double hung windows for awning style windows instead. This can be as simple as hanging the window from the window trim with hinges at the top of the window. Benefit: you can leave windows open even when it's raining or snowing.

6. Make a clean out door under the perches. I put a 2' x 4' door at the back of my coop under the perches. It saves a LOT of work when it's time to remove some of the DL.

7. Put the perch(es) on the gable end wall, so the birds have more room to jump down. Mount them at least 12" away from wall, and 18" below the lowest level of the ceiling. Perches must be above nest boxes.

8. Either raise the coop high enough that the birds can easily hang out under it during the heat of the day, or make it at ground level. IMO, I much prefer a walk in style coop. It appears that you have plenty of yard space. Save the frustration of having a coop that you can not easily enter, and make it a walk in style. Also, consider making it bigger than you need. You can use the extra space for storage, or to section off a broody or hospital area. If you build a cute little coop, that's all you're gonna get. If you build a SHED that you use as a coop, you will still have a shed if and when your flock size changes or you stop raising chickens, and you no longer need to use it as a coop.
 
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Well... I definitely didn't intend to have a coop one week after starting this thread. I was shooting for fall, but my contractor had one week of down time before starting two big projects that would take a month each, so he wanted to make the coop ASAP. So Sunday, he delivered my coop:
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Inside width (not including nest boxes) is 4', inside length 6', and its about 6' tall at the inside peak. I had him leave out the roosts because I wanted to position those myself.

I thought we were on the same page about ventilation, but I guess not. What I call windows he calls venting. You can see them in the second pic. There is one above the chicken door and one above the nest boxes. I do not feel comfortable leaving those open at night, nor will they be above the roosts. Here is a picture of the soffits. The air gap is 3/8". Should I cover that with hardware cloth or is it small enough to leave open? The coop will be in a fully enclosed run and surrounded by electric fence.
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There is no venting at the gables. Should I just drill small holes under the peak, or make a larger opening with a hole saw and put in an actual vent? Or any other ideas pertaining to the gables would be greatly appreciated.
 
Well... I definitely didn't intend to have a coop one week after starting this thread. I was shooting for fall, but my contractor had one week of down time before starting two big projects that would take a month each, so he wanted to make the coop ASAP. So Sunday, he delivered my coop:
Oh Drat!
Well, it is what it is.
Don't have time now to detail out all I think here....but first thoughts:
Are you going to leave coop there?
Wondering about run off from that building and snow building up on coop roof next the building.
I'd turn that window around so hinges are at top.
I'd take a sawzall and open that 3/8" gap down to top plate, then HC the soffit from outside. Louvered gable vents would be good.


Here is the Modern Fresh Air Poultry House book about the Woods style coop.JT
Not sure that's gonna help now @jthornton ;)
 
It needs some modifications, and I guess he did the contractor thing; "What do they know?" It's doable though, you do have a structure.
Consider closing off those 3/8" openings and add venting/ windows, bigger, below them in the walls, especially on the south side.
Fix that window so it hinges on the top, not the bottom!
Place it elsewhere, on a better base! The snow won't be good from your roof, and that's an outrageous way to level it!
More ventilation, higher up.
Wish it was taller inside, unless your family is all very short.
Improve the hardware cloth attachments all around, with fencing staples, and boards screwed in over the edge framing.
Mary
 
I wouldn't worry about the 3/8 inch gap. I wouldn't drill holes or cut anymore, either.

What direction is the broad side of the coop facing?
 
X2 in the window especially. Those bottom hinges are inviting rain in, top hinges will block the rain & snow.

Louvred fable vents would work great, like Aart said. Measure the space you have and get the biggest you can fit.

All in all, it’s a great starting point for your new coop, not much else to do. I like how the pop door opens to be part of the ramp. Just remember that snow will block it and need to be removed when you open it.
 
I should have mentioned that is not its permanent location, I had them put it there out of the way and they stuck the boards under it so it wouldn't tip until I got it moved. I am only 5'1" so the interior height is fine for me.

So the 3/8" gap under the soffits on both sides isn't considered ventilation at all?

@aart What do you mean by "top plate"? What size hole would you recommend for the gable vents?
 

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