When we bought our house, there was an old shed that had been semi-converted to a coop, but had some issues. I made a few modifications, including putting up an interior wall to make a storage area and block drafts from a warped door that still needs to be rebuilt.
The coop is a spacious 10' x 10', with a 7'+ high ceiling. At approximately 4 sq. ft. per standard chicken, that would mean we can reasonably house 25 birds. We currently have 12, 3 three which are bantams. My worry is, when winter comes and it plunges to -20/-30, am I going to have a lot of trouble keeping the girls warm enough? Aside from heat loss due to large windows, will a couple of 250w heat lamps during the night be acceptable? The walls are somewhat insulated, but I'm not sure how well because 3 of them were enclosed prior to me starting anything. The ceiling will have an R-value of about 30 by the time I am done putting up the rigid insulation and filling gaps. Ventilation is planned to circulate between the inner coop and the storage space so that it does not bring in the coldest air from outside, but rather has a little buffer in temperature.
I was thinking I could stack bales of straw against the walls to help decrease the air space, but that might make it a bit dusty and dirty. Any thoughts?
Of course, I could always get more hens to help heat the place, but then I might have to build a bed out there for me too.
The coop is a spacious 10' x 10', with a 7'+ high ceiling. At approximately 4 sq. ft. per standard chicken, that would mean we can reasonably house 25 birds. We currently have 12, 3 three which are bantams. My worry is, when winter comes and it plunges to -20/-30, am I going to have a lot of trouble keeping the girls warm enough? Aside from heat loss due to large windows, will a couple of 250w heat lamps during the night be acceptable? The walls are somewhat insulated, but I'm not sure how well because 3 of them were enclosed prior to me starting anything. The ceiling will have an R-value of about 30 by the time I am done putting up the rigid insulation and filling gaps. Ventilation is planned to circulate between the inner coop and the storage space so that it does not bring in the coldest air from outside, but rather has a little buffer in temperature.
I was thinking I could stack bales of straw against the walls to help decrease the air space, but that might make it a bit dusty and dirty. Any thoughts?
Of course, I could always get more hens to help heat the place, but then I might have to build a bed out there for me too.



