I am building a little shed in my back yard. Part is going to be used for storage of small stuff like Christmas ornaments/lights, books, etc. The majority of the rest is going to be a workshop for our arts and crafts - sewing, knitting, etc will be done inside, but all the “messy stuff” - fabric dying, plastic model building, foam cutting, etc will be done in the shed where I can install a proper spray booth, a dedicated table I don’t have to cover with newspaper first and the like. There will be adequate ventillation/fans for those rare occasions I’m using some volatile chemical not in the spray booth (which will be direct-vented outside).
I’m putting in a small window unit for AC (there won’t actually be a window, tho - just a cut-out large enough to hold the AC) and a sealed-oil heater for the winter. Each will be on only if needed while I am actually working in the shed.
The shed is positioned such that, with tree and house shade coverage, it only receives direct sunlight about 2 or 3 hours per day, between about 1pm and 4pm or so. I live in West Tennessee, so it’s not unusual to hit triple digits in the summer, but winter rarely gets into the single digits (tho below zero is not unheard of, it’s usually never for extended periods).
My question is in regards to insulation. I know that EPS (expanded polystyrene - not Styrofoam™, but the little pellets that are expanded and crushed together) is used as insulation sometimes - but is it all generally the same? I ask because I’m friends with a guy who owns a bunch of rental properties. He recently (well, before the bulk of the housing bust) upgraded/replaced the large appliances (and AC units in some cases) at several of his properties. Many of these were packed with 1.75" to 2" thick EPS sheets for cushioning. I have acquired these - ostensibly for building terrain and some costuming purposes - but I have so many of them I could line my shed walls with them and still have a few sheets left over.
This is just a shed, and I’m not planning to spend a lot of time out here - mostly a few hours on the weekends and the very occasional evening - so I’m not looking for uber-insulated R-297 walls, just enough to maybe help even out temperature variations somewhat. Would I be able to use these sheets, or is there a ‘special’ type of EPS, or am I better off forking over the $$ for some of the pink stuff?
edited 'cause I don’t know the difference between expanded and encapsulated :smack: