Two-story Victorian: basement insulation plan
Sorry guys (Matt F & Dana Dorsett) — I have been away for a while sourcing materials and making calculations. Hopefully I have done well to your liking…
Location: Cleveland, OH (Burke Lakefront Airport)
BASEMENT WALL INSULATION PLAN:
(a top-down sandwich)
1) Thick polyethylene vapor barrier
2) 2-layer soft-fired brick wall
3) 6″ EPS insulation
4) 2×2 framing
5) cement board
6) thinbrick, stone, or tile
BASEMENT FLOOR INSULATION PLAN:
(a top-down sandwich)
1) Tile
2) Ditra decoupling floor membrane https://www.schluter.com/schluter-us/en_US/Membranes/Uncoupling-(DITRA)/Schluter%C2%AE-DITRA-&-DITRA-XL/p/DITRA
2) 3″ reinforced concrete slab heated with PEX
3) EPS Amvic pex panel https://www.amvicsystem.com/products/ampex/
4) Thick Polyethylene vapor barrier
5) 3″ Type-II or Type-IX EPS
6) 6″ washed gravel
ROOF INSULATION PLAN:
https://www.greenbuildingadvisor.com/question/two-story-victorian-roof-insulation-plan
EXTERIOR WALL INSULATION PLAN:
https://www.greenbuildingadvisor.com/question/two-story-victorian-exterior-wall-insulation-plan
BASEMENT INSULATION PLAN:
https://www.greenbuildingadvisor.com/question/two-story-victorian-basement-insulation-plan
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Replies
Put the poly vapor barrier under the Amvic, above the other foam. If it's on the bottom of the stack in can harbor large quantities of water in pockets. When it's between two flat layers there no pockets can develop.
Use Type-II or Type-IX EPS for the foam under the vapor barrier.
Under the bottom foam it needs 4-6" of washed gravel as a capillary break and drain layer.
Changes made.
Thanks Dana!