The 5mm foam board in your in at post #11 is a modelling board with a paper coating, okay for indoor models, not really suitable outside (unless you bring it in every night) what you need for outside is as described by LGB-Sid at post #14. 3mm or 5mm should be fine dependant on size and how you reinforce it.Is 5mm foam board OK for making G scale models? By OK, I mean is it strong enough?
Does 5mm give doorways and windows enough depth?
Sorry. probably re4ally stupid questions, but before I order a sheet, II just want to be sure.
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