Steel shop question

71340Duster said

Thanks all, all good points. I am not doing the work myself and I wonder how much cost it will add. For example, I've seen kits with varying prices from 13k on up. I am trying to figure out about how much having it insulated will add for a 30 x 40 with 12 foot walls. Several thousand?

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if you do the roll insulation/heat barrier the cost will be about 1500-2k or so total for a 30x40x12 added during construction.
that insulation is 4 ft wide or so and in rolls of about 100ft and looks like bubble wrap that is white on one side and silvered on the other. it works ok, mid to low R value but does have to go on during installation of the walls and roofing. more of a heat barrier for warm climates like here in Florida.

http://www.fifoil.com/products/advanced-solutions-systems/retroshield®-system
they also have another type that goes on after construction over the purlins and girts but that makes it difficult to run your wiring after you have it up unless you go to conduit for your electrical.
If your going a different type insulation with bat type or blown in fiber insulation you WILL need to add a Sweat protection from the steel walls. The above insulation works great for that.or just use the radiant barrier which looks like an embossed metal like plastic sheet.
http://www.fifoil.com/products/radiant-barriers/radiant-shield
Blown in closed cell foam does not need vapor barrier for sweat protection according to the vendor.
I got an estimate here in Florida for my 30x40x12 @ 7300 for closed cell foam and 3700 for blown in fiber.

just look around on this site to get ideas.(good info bad prices) this site is EXPENSIVE to ship from so another site is advisable