Floor joists and insulation for vented crawlspace in a flood plain
This is a rehab of a home in a FEMA floodplain in a suburban area. The house has never flooded and is not likely too. In any case, the county will not allow land disturbance of the existing foundation and we cannot enclose the crawlspace because of the floodplain. However it appears many of the floor joists are warped so we may need to replace the first floor deck and joist system.
Can I use Regular i joists in a vented crawlspace. It is 30", so the joists would be well off the crawlspace floor (dirt covered by vapor barroier) and bearing on a pt sill plate. Is there a coated ijoist?
If I am stuck with dimensional lumber, is there a coating I can use to inhibit mold growth etc a reduce warping that comes with pt.
I intended to insulate the joists with closed cell. If so, what do I cover the underside of the joists and foam with to resist pests.
Posted Jan 6, 2013 10:15 PM ET
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