Vented crawl space
We’re building a pretty good green home in Gardnerville, NV, a place that gets 8″ rain per year. We get cold in the winter (-10°) and are pretty warm in summer, about 10 days with >100° temps. Radon is an issue in our area. Our new home is being constructed with SIPs, therefore no attic space. We have natural gas at the site, pretty cheap in Northern NV. Our plan is forced air heating via Natural Gas in winter and a few days in summer when we’ll use A/C.
We need a crawl space to route the HVAC ducts between the floor joists. Sealed crawl spaces seem to make sense in the southeast, but what do you suggest for our arid climate? I have seen ex cathedra comments: “… crawl spaces must be sealed.”
My builder wants to use traditional insulation bats between the floor joists with a vented crawl space, keeping the HVAC stuff and plumbing high up next to the floor. I suggested isolating the floor system with blown-in insulation.
What do your editors suggest for our western construction project?
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