By Thursday, after a couple of delayed days due to icy cold weather that would have stopped the gun foam from working properly, we finally finished installing the 200mm (on average) thick layer of polyurethane (PU) “seconds” foam boards. The last section was around the Great Room, in the west end, finishing off the Patio section, then the O section and finally the N little section around the corner.
We had to first dismantle the upper section of our indoor timber storage area, see Spare timber Store Moved Outside to Swimming Lane and move the timber outside, to gain access to this segment of the exterior walls. It is our very last section to get done and now we can say, for real, without this task hanging over our heads, that we really truly finished this job. Although we have not finished putting insulation in the walls because we will be adding further layers of Mineral wool insulation to finish filling the rest of the wall up to the 380mm depth for the complete wall.
Foam-Insulation-in-the-last-Wall
The other job that took several hours was to glue a piece of 11mm OSB board to go over the “O” window to improve the structural integrity of this section that is supporting the extension and its roof.
We filled in the space with foam, gluing each piece to the wall and each other and then screwed the OSB to the timber framing, using plenty of PU glue to ensure the whole thing is solid.
Reinforced-Header-over-O-window
So that is it .. except, we now have to tidy up the mountains of rubbish generated!!
Insulation-rubbish-Pile-1
Insulation-rubbish-Pile-2