Hard foam prop storage

[jdubbya]

For those who live in the northeast (or anywhere else that can get cold in the winter and very hot in the summer) Do extremes of temperature have any effect on hard foam props (tombstones,skulls, etc..)?
In trying to reorganize some storage, I can put my tombstones in our attic, however it can get extremely hot in the summer. I don't want to risk damage from temp. issues.
Thanks

[jtc]

I've had no problems with storing any of my foam props in the attic. I live in southern Ontario and have been storing props in the attic for 15 years, The only problem I've had is that latex masks can't take the extreme temperatures of the attic. Hard foam, after all is insulation and is designed for such areas.

[jdubbya]

Makes sense. Thanks!:)