tiny house insulation

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The Inner Envelope

I define the inner envelope of my tiny house as everything between the Zip panel (with its own vapor barrier) and the inner siding.

Walls: Total R Value 18

For rigidity of the structure, in the corners and key areas (about 20% of the entire structure) of my advanced framing, I placed a combo of 1 inch Owens Corning Foamular 250 (R Value 5)  and 2 inch Bonded Logic recycled cotton jean insulation (R value 8).  The last .5 inch is an air layer between the layer of stapled Ecofoil radiant barrier and my interior walls.

In all remaining walls I have 3.5 inch of Bonded Logic (R value 13) slightly pressed in with stapled Ecofoil and .5 inch airspace.

Dormer and Cathedral Ceiling: Total R Value 18

I have 3.5 inch of Bonded Logic (R value 13) slightly pressed in with stapled Ecofoil and .5 inch airspace.

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Floor: Total R Value 33

Two layers of 1.5 inch Owens Corning (R Value 15), 3.5 inch Bonded Logic (R Value 13) and Ecofoil (R Value 5).

SubfloorSumm

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The Lofts

This week the build out for one of my lofts was required so that the ridge beam and rafters can be built from the inside out.

First I had to insulate and EcoFoil the exterior floor over the deck.

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I have chosen to “pickle” the boards with white primer and two layers of acrylic varnish to allow the woods lovely surface that ethereal aesthetic finish which will be featured throughout the tiny house interior. Just enough to tone down the busyness of the wood yet still leave an appreciation of its surface qualities.

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The underside of the loft boards were also sanded and given the same finish where they will be visible.

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