Hi I am about to build a coop but I'm concerned about what materials to use in my climate. I live on the Gold Coast in Australia. Summer gets to about 30C/86F and winter at night as low as 5C/41F. Easiest would be to buy an existing colourbond/tin shed to convert but will my chickens be too hot during the summer to lay in there. Or should i make it with cladding and have a tin roof. I will have about 8-10 hens and they will be free range with plenty on shade about but the coop will be in full sun on a large concrete pad. Any advice appreciated before I make a costly mistake. Thanks.