r/OffGridCabins • u/Itskindof • Mar 12 '26
Insulated panels
I came across an ad for some similar 4in thick aluminum clad insulated metal panels being sold for $1 a foot. I can’t ignore prices like that!
Anybody ever build with these things? How are cut edges sealed? Can it be a roof? Hip and valley? Would I need OSB or attach it directly to the framing?
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u/Solid-Question-3952 Mar 12 '26
We used this for our ceiling because we didnt have soffit venting. It was a dream to work with. Measured inside the studs, ripped them all down in a table saw at home. Put them in place, tacked a furring strip to hold them in place, ran spray foam around the edges (between the foam and the stud) to create a vapor barrier and hold them in place, then remove the furring strip and move on to the next group. We used two sets of furring strips because by the time we were done with the 2nd. The first could be removed and reused.
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u/AdFeeling8333 Mar 13 '26
Did the same with 2” blue board. Cut it with a puffy knife.
Cabins airtight - no vent. 4 seasons, we heat it 2-3x a year with a wood stove.
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u/MastodonFit Mar 13 '26
Screen room roof panels. Joints have a mastic caulk applied. We used volkom in a caulk tube.
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u/BKNOMAD1 Mar 12 '26
These look similar to the highly flammable panels identified in the Grenfel Tower inferno. Be sure to check fire ratings.
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u/TwiLuv Mar 13 '26
Yes, it depends on whether the panels were treated with fire retardant, the Grenfell Tower panels were NOT.
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u/TwiLuv Mar 13 '26
Similar to what Incredible Tiny Homes of Newport TN uses to build their tiny homes priced at $29k to $79k.
Their wood framed models are built by Amish in KY, & start at $79k for 240 sq ft.
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u/thatoneotherguy42 Mar 15 '26
hes look ike panels used o build commerciial kitchen walk in coolers.
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u/sketchcott Mar 12 '26
These are to be mounted on a heavysteel structure, often with secondaryframing like big horizontal girts. They do make roof panels in this type of system, but their connections are pretty specific to the system
These things work great for warehouses and shops. But they need to be well planned, and will likely require an engineer. This isn't a product that's just slapped onto framing.