Hi!

where are you located? I'm wondering because I wonder how well PVC holds heat, I live in the "Maritime" NW. keeping a whole room in the 70-80's for the size collection we have is unrealistic in the winter.

It seems a whole lot has changed since the 90's as far as products for enclosures, materials, hell even morphs that were insane to think about are now seeming common place it's kinda overwhelming and fantastic at the same time!

I did some research on expanded PVC and most of what came up looked like Styrofoam boards, is that what I need to be looking at? how is it structurally?

The picture you sent along looks like it finishes just as fine as wood!

Mark gave me alot of helpful information!

I can't afford to purchase 4 RHP's right now so I've decided to go with (unless someone has a better suggestions):
for the enclosures:
3total enclosure 72"Wx18"Hx24D (one with 2 removeable partitions)
finish plywood (white oak Facade, banded and finished to look like a piece of furniture)
Plexi frameless doors with locks
18' x 11" heat tape
Herpstat 4 thermostat

Still undecided on sealing:
Water based sealant?
2part epoxy?

I'm also wondering how to best do the heat-tape on wood i.e. along the back wall vs. the floor (routing both).

Covering with mylar, plexi, or tileboard?

Thanks again!

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