Insulation, Radiant and Vapor Barriers - Insulating from the outside?
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MNcountry
02-04-06, 01:31 PM
We are looking at different options to insulate our old grainery. Right now it is old tongue and groove siding with logs for studs on the inside. It is not airtight at all(read-you can see sunlight ;) ). Would it be possible to use rigid foam board insulation on the outside siding and then side over that with metal siding? We are looking at the benefits of both that and blown in foam insulation at this time. Would either need a vapour barrier or anything else?
Problems with blown in are expense and difficulty of covering the walls when finished as nothing is the same depth(the log studs), so we would have to shim alot or something. We also like the looks of the log studs and it would be nice to not have them covered-they add character to this early 1900's structure.
If using rigid foam insulation, we would have to reside the outside. Not sure how that would all work either. We will be changing windows and doors, too. The windows currently are single paned and are set into the siding-no framing to speak of really.
We are staying away from the regular batt insulation because of moisture issues. We would have to reside AND cover the inside walls, so it would be expensive and more labor intensive and not the best insulating.
Problems with blown in are expense and difficulty of covering the walls when finished as nothing is the same depth(the log studs), so we would have to shim alot or something. We also like the looks of the log studs and it would be nice to not have them covered-they add character to this early 1900's structure.
If using rigid foam insulation, we would have to reside the outside. Not sure how that would all work either. We will be changing windows and doors, too. The windows currently are single paned and are set into the siding-no framing to speak of really.
We are staying away from the regular batt insulation because of moisture issues. We would have to reside AND cover the inside walls, so it would be expensive and more labor intensive and not the best insulating.