Looking for a "green" modular builder willing to ship to NW Canada
We are building a duplex that will not use any fossil fuels up here in Yellowknife, Canada. (18 hours north of Edmonton - Climate zone 8 - same as Fairbanks). Our lot is on 100% granite so no basement, no slab on grade - we're building a "box on legs". We aim to invest as much as we can in insulation and then heat with wood pellets & some of our local hydro electricity ($0.30/kWh)
We also want green materials which are hard to find here & our trades are very expensive so many people are going with prefabricated modules.
Problem is that the insulation levels we want are even higher than what would count as a passiv haus in "the South".
Here is what we are thinking - we want to start with a southern modular home built with green materials. In my mind that means no spray foam and probably not even foam board. Low VOC, low formaldehyde, & careful on the flame retardants.
We'll bring it up here with no siding & then air seal it on the outside of the plywood or OSB with roofing membrane or something similarly sturdy. Then insulated (exulate) on-site with a thick layer of Roxul & apply siding. At least the walls, but perhaps floor & ceiling too if we can't get the R values we need at the factory.
Advantages: can bring up slightly wider modules, can do air seal & blower door test before insulation is added, no shifting of insulation during trucking
Has anyone tried this before? Any factories that might be worth asking?
Posted Tue, 10/29/2013 - 01:04
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