Foam board insulation
user-7498793
| Posted in Energy Efficiency and Durability on
I have a mobile home with aluminum exterior panels. No sheathing. 2×4 walls and some kind of old fiberglass insulation. interior is paneling. i want to take the metal off and put up foam sheathing. put new r13 fiberglass insulation,trash the paneling, install 1/4″ sheetrock ill put up 1×2 strips over the foam horizontally to screw the metal to. whats the best material and is this ok way. zone 3
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Re-build to the recommendations here.
thanks Jon. the link is very much to take in. ill try to make since of it all.
also adding this thought. build like mentioned before and allow air flow to escape between the metal and foam board. the metal sheathing is corrugated. so it will never mash tight to the 1x2 nailing strips. the bottom and top of the metal sheathing will be open to allow air flow.
normal building is osb sheathing with felt paper or tyvek then whatever exterior material. then 16" oc studs 1/2" sheetrock. im worried of adding all the extra weight to this mobile home. why i wanted to use foam sheathing and 1/4" sheetrock. i dont want to put up double vapor barrier or something that will block in moisture by using the rebuild mentioned. the metal sheathing gets super hot as its in most of the sun all day no shade. any suggestions would be appreciated.
1/4” drywall can’t really be used for a wall by itself — it is really a special purpose product for forming arches and covering damaged sections of regular drywall. It’s not very rigid. You would be best served by using 1/2” ultralight drywall here if you really want to use drywall. You could also use BC sanded plywood as a paintable surface, but I’m not sure you’d be able to finish it to the same kind of flat surface that is possible with drywall.
Bill