Well where I am we have had weather flux from +12 (celcius) to -40. So regardless of where I keep my brooder I will need to be on top of checking for heat/cold surging. I have been searching obsessively for a cold weather very sturdy and portable brooder for a cpl months to no avail! So here's what I came up with and plan on doing a trial this week in both outdoor coop conditions as well as in my heated garage. [/IMG][/IMG] The first photo is a terrible view of its size. Sorry! But the second shows the styrofoam insulation followed by the reflective bubble insulation. Next is my brinea "hen", shaving and straw bed mix and a overhead heat lamp if needed. I will have a thermometer and hygrometer to ensure it is not to moist.