Soffit and ridge vents came next in our pre-roofing checklist. Since our roof system will need ventilation but not insect habitation, we manufactured these nifty soffit vents. This metal mesh did the trick when shaped with a 3/4" dowel and stapled to the back of the blocking. The mesh will compress like a gasket to allow the air to move freely over the insulation and out through the ridge vent.
Walls keep flying up and framing continues. Both structural and envelope integrity are foremost in our minds at this point...
We opted for California corners in the framing, which increases envelope efficiency. By rotating the intersecting wall's corner stud 90 degrees the builder can insulate across the full stud bay, which helps in two ways:
As with the floor framing, we installed cross bracing in the wall framing. Noticeable differences in overall rigidity occurred after this step. You might be wondering about the insulation in the corner stud bays. We needed to complete this step at this point because the California corners make it difficult to wedge (rigid) insulation into them once the cross bracing is in place.
More reinforcements! We tied the wall framing to the entire floor system with 10" galvanized bolts and massive square washers (we found another use for the square washers...more on that later). The house is officially one with the frame of the trailer. Onward and upward!
Today we added some cross bracing to our floor framing and installed our rigid extruded polystyrene insulation. Two layers of 2" and one layer of 1" insulation filled the cavities well. Overall R value of the flooring system should be around 30, which is what ENERGY STAR recommends for the most harsh North American climates.
In anticipation of shower drain plumbing, we created this cavity. Other insulation options include traditional fiberglass, dense pack cellulose, spray foam, or sheep wool insulation.
After insulation we glued and screwed 3/4" subfloor to the framing. This is a huge step because it feels like the real beginning of the home. Walls are next!
Wishbone Tiny Homes Blog
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