Open Cell Spray Foam - crawl space and interior walls

ChrisStratton · 01-06-2018, 09:00 PM

Hi Dick & Winterh,

Thanks for a careful and informed responses! It sounds as if Dick is suggesting some sort of air "tight" skirting, with 2" foam on the "dirt floor" and "walls", covering the lot w/ 10mil poly and gravel on the floor, over the poly and foam board.

Winter H seems to be along the same lines - basically encapsulating the crawl space area.

Do I have that right?

You'd mentioned the borate treated cellulose sprayed up option. Since the floors will be redone - could I just spray that down? I guess the joists will still be cold 'bridges' in that case. https://www.homeadvisor.com/cost/ins...in-insulation/

Chris

01-06-2018, 09:00 PM	#17
ChrisStratton Junior Member Join Date: Oct 2017 Posts: 15 Thanks: 0 Thanked 0 Times in 0 Posts	Hi Dick & Winterh, Thanks for a careful and informed responses! It sounds as if Dick is suggesting some sort of air "tight" skirting, with 2" foam on the "dirt floor" and "walls", covering the lot w/ 10mil poly and gravel on the floor, over the poly and foam board. Winter H seems to be along the same lines - basically encapsulating the crawl space area. Do I have that right? You'd mentioned the borate treated cellulose sprayed up option. Since the floors will be redone - could I just spray that down? I guess the joists will still be cold 'bridges' in that case. https://www.homeadvisor.com/cost/ins...in-insulation/ Chris