The latest video(#13) on the Our House is up on the NFSB continuing education website:
Check it out, but remember that that unit had the roof amputated by the wind last week, so it currently looks a little different. Not to worry, we will recover from this setback!
Here is what the upper chords of the roof look like now. Looks like a lot of toothpicks lying there on the ground (sniff):
The “upper chord” \ is the part at the top of the truss assembly that the roof sheathing sits on. In this case, because the truss was hinged, the upper chord is very similar to a roof rafter, and structurally, the rest of the rafter that supports the ceiling (and will support the upper chord) was fine and does not need to be replaced. We are hoping the engineers at the roof truss manufacturer agrees with us, and we can simply repair this part of the truss. It will take us about 3 days to make the repair.
Today, we made some progress on finishing the inside of the exterior walls so that we can build and assemble the partition walls.
We are not quite finished yet, but we will be ready sometime early tomorrow. You may notice that there are two layers of furrings on the walls and ceilings. This is because we will be weaving the wires for the electricity between the drywall and the Enermax vapour barrier. In this way we can avoid piercing the vapour barrier and can minimize air infiltration and exfiltration. A good wind and vapour-proof wall will make a more healthy home and one that is more comfortable and easier on the pocketbook in so far as energy costs are concerned.
The problem with a well sealed home is that the “pollutants” created by the residents will also be stuck inside the building. Pollutants include: water vapour, carbon dioxide, smoke, cooking odours, etc., all of which we create by living and breathing. What to do about this?
We will be installing an air exchanger with a heat recovery unit that will create a controlled exchange (with heat exchange) of dry, “clean” air from outside with the humid “dirty” air from inside. This will promote a healthy living environment as far as air quality is concerned and will work in conjunction with the high quality insulation we have installed.