How hot is too hot? 50 degrees? 60 degrees?
I'm thinking the garage needs insulation.
He he, I know it's off-topic, but here is deep in the minuses in the winter (currently below 0C), and the garage is down to -5C. Sails get crackly, etc.
Damn I envy your predicament...
Sounds like you'd be better off leaving them outside in the shade. The area in the roof is going to be the hottest place in the garage with rising heat and the radiation from the tin roof. I reckon if you could put them on the floor you'd drop about 20 degrees.
Go get yourself a couple of bags of 120mm batts and some foil, won't take you long to do the job. Then you can install a beer fridge and you're set.
Move them inside the house in the a/c.Next to your bed or something like that.
If the cheese and kisses complains put her in the shed for a cupla days.
