
Hi Sarah
we used a shed for a while, we lined it with chipboard, between the upright supports which left a gap between in which we put just plain old straw well packed in.
the door we put extra hinges towards the middle and cut the door in half [ well more like 3/4 and a 1/4 ] we put a peice of wood attatched to the top door bottom to overlap the gap between the two and to make it possible to either open the top alone or both bits at once.
it was very cosy in there, the dogs had raised canvas beds with vetbed on, they never felt cold.
hope this helps
Pauline