floor insulation choices in pre-fab shed
12 X 32 prefabbed shed in Western Maine, Zone 5. I believe. Shed is a plywood subfloor on a joist system; held off the ground by CMU’s to level it. This will be a 3 season living space until we are able to build a home. I am thinking about either 1″ blue board or 1″polyiso glued to the existing floor, and then add 1/2″ CDX over that, screwed to the existing sub floor. Bottom plate junction with insulation and plywood will be airsealed. Cost is an issue of course. I know I will get a higher R value with the polyiso; Wall and ceiling insulation is TBD; floor needs to happen first. Thoughts, comments, appreciated
Thanks much
Rich
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Replies
Think return on investment. I don't think you will save enough heat to warrant the insulation investment. Insulation gets you the most return when the weather is cold (winter).
I think a lot depends on what is really meant by 3-seaon. Also, what heating source.
Early Spring to Late Fall- ; heating system is either a small wood stove, or a direct vent propane stove. With the current economic situation, this could wind up being a full time home.
Year round is totally different than three season. You have the plumbing issue. I would consider building on an insulated, sealed crawlspace. Site it so that it can be incorporated into the new home, for example, as a kitchen wing.