The sunroom was originally a porch that a previous owner had “winterized”. About 25 years ago, I had beefed up the insulation, replaced cheap paneling with Sheetrock, and installed real Windows to replace triple track storm windows. A few years after that, I added a small (really small) bathroom. In addition, there were some structural issues with northwest corner of the porch, but in the end, water and time and other things, it was time to redo things.
The first step was to remove the old bathroom, yet maintain basic functionality.
With all of the partition walls removed, as well as the shower stall, you can see some of the water damage. More demo is required. When the sink was first installed, the framing of the wall behind it was questionable, so a section of plywood was screwed to the wall, and the sink hung on that.
As the Sheetrock was removed, we found a layer of 1″ rigid foam insulation. That was covering fiberglass insulation, but the studs were NOT attached to the outside wall. The studs were also not installed with standard spacing, so the fiberglass wasn’t doing all the much.
On closer examination, we discovered the carpenter ants had chewed up a lot of the foam!
As part of the new bathroom, we wanted to move the wall out as far as possible. So, we wanted to add some insulation to the outside of the wall, and cover it with siding. So hook up the trailer and off to Home Depot.
With material in hand, it was time to bring in a highly trained professional (in another field), and in a good mornings work, we got insulation and horizontal braces, capped with another inch of foam, and then siding up to the roof (it might have been more than a morning).
With the siding done on the north wall, we moved back inside and started taking the ceiling down. More foam insulation (with insect damage), and Fiberglass batts (a 15″ and 23″ pair trying to fill a 37″ bay).
But with ceiling down, we could see light between the roof ledger and the brick. When the corner post rotted, the roof and upper edge of the wall pulled away from the brick. Well, that explained the leak.
Back outside to work on the roof. Cleared some mortar out of a joint, bent some sheet metal to lock into the brick and bend down over the shingles.
With leak handled, took a different approach with ceiling insulation. Put the trailer back on the car, and over to Lowes for a pallet of insulation (loads a lot quicker), then rip the panels to 37.5″, and bevel cut the ends and press fit them into the ceiling bays.
With the ceiling insulated, we started on the south wall. Like the north wall, it was a skin on vertical tounge and groove strips, with very little cross bracing. But this time, we put the insulation on the inside, and put the screws in from the outside.
We also returned to Harley. Haven to rerun the high velocity air ducts through the brick wall rather than through the old window. This will help when we put in the ceiling. Still have to move the water and DWV lines, but that will wait until we start plumbing the bathroom.