Batt insulation day 2

More batt insulation today. I’m doing batt installation myself with help from my cousin. The reason for putting in the sweat equity is due to the unusual way this house is insulated. Your typical contractor will want to do it quick and won’t do the work well. Insulation is pretty simple to do and so doing it myself allow the work to get done slowly and well. The north wall is a fire rated wall, so no spray foam is allowed in the wall assembly. Instead, we are cutting Roxul ComfortBoard R6 to fit in the 2×2 stud space. We then fill the 2×6 space with Roxul ComfortBatt R22.

For the ceiling, there is already R31 from the spray foam, but we are filling the rest of the joist space with Roxul ComfortBatt. The 3rd floor uses 10″ joist, the spray foam is about 4.5″, leaving 5.5″ which fits R22 batt exactly.

Once the 3rd floor is completed, we move onto the 2nd floor. Here in the bedroom, the same thing is done on the north side wall. The cutting of ComfortBoard to fit into the 2×2 stud space is taking a long time to do since each piece have to be cut to fit and then slide into the 2×2 stud space.

The east side wall is much easier, there is a window and a door. So not much space left for insulation.