Garage & attic storage is dangerous!! That I have never done. Wow I'm sorry for you it hurts...and then hurts some more... A friend of mine stores her plumeria collection in a commercial climate controlled company & has had no problems. She stored her first winter in N.Texas in a garage & had a huge collection & her losses were enormous. Without a doubt your orchids would be mush!! I have to go to our storage unit & get the label off the box. My BF Mom..that is like my Mom..Anne .is '94 her dog had become incontinent & had to become an outside dog full time. Ok this is a Great Pyrenees, Suzie. But still she is 14. The heat is more of an issue than the cold. We took a covered section of her patio & enclosed it with a SW structure. Put a small ac/heat system in it for her & this place is super neat. When Suzie time with us is over Anne will have a little GH/solarium. I will go back through my mail & see if I can get an addy. & spy tart a new thread with pics step by step etc.
it is nice meeting & chatting with you Ken