Climate Panel over semi-conditioned basement.

woobagooba

I've got a Climate Panel install going into first floor whose subfloor is a patch work of old gapped boards and Advantech (air leak city). The basement below is rubble foundation with rat slab and single pane hopper windows ... semi-conditioned space, often humid in summer, dehumidifier often running, etc.

I am not ready to cross the bridge to address the basement slab and rubble walls, so I am considering treating the first floor / basement ceiling as the air/vapor/thermal "bottom" of my building envelope.

Back to the Climate Panel. I am considering placing Membrain between the subfloor and climate panel as an air/vapor barrier, then the town will require R19 batts in the floor joists below.

Does this sound like a reasonable approach?

Thanks

Alan (California Radiant) Forbes

It seems as though the subfloor would pick up the moisture, but I don't have enough experience in humid climates to say for sure.

Jamie Hall

Do NOT use any type of fibre or batt insulation below your vapour barrier in that leaky damp "basement". It will become saturated with moisture -- and critters... and bugs... and rot.

Don't ask me how I know.

woobagooba

Must ... resist ... urge ... to bust out / replace the rat slab and spray foam the basement walls!

psb75

Consider: no rat slab, and a migration towards a new "pink heaven."
Jamie Hall speaks The Truth.
Unconditioned spaces below a living space are always problematic and require careful consideration before treatment.
Just my opinon: 'They' should stop manufacturing and selling fiberglass insulation.

jumper

A complicated situation. Can styrofoam alleviate cold floors?