I found today extremely interesting. I'm not sure others will share my enthusiasm......
I started off late after collecting my tool:
...........plus some belts for my bandsaw, and some other bits & bobs. Buying materials is a very big part of a job like this, and I've slipped up a few times by not getting stuff ordered soon enough. But I digress.
My prising tool fits in behind the render, and pivots on a bar across adjacent studs, sort of like this:
Before I did any render removal, though, I covered the gap between old & new, and the glazing. I also removed an old outside light.
Then it's just a question of working along the top of the wall from one end to the other and back again, getting sweaty (yes, at 2 celcius, you can still end up peeling layers off). Here you can see the temporary roof at the top, and the top couple of feet of render gone:
This isn't classic chocolate box 17th century timber framing. That had continuous studs, with planted-on (let in) wind bracing, often curved. This has primary posts, large lumps of diagonal bracing (straight), and all of the intermediate studs (which curiously are at 17" centres, rather than the more usual 16") are cut to nail onto the diagonal brace. Much like softwood framing of the beginning of the 20th century up to the 1970's or so. It also only has the principle timbers pegged. The rest, although mortice-and-tenoned, appear to be loose (ie not nailed or pegged, nor indeed wedged):
Now, the fun bits. Look at this principle post. The fat one, 17" from where I started removing render:
Look at the mortices in the face which was rendered. Notice also the stopped chamfer on the right hand side. This was clearly, certainly, a bridging joist (the main beam in a first floor that runs parallel to the front wall of the house, subdividing the floor) which had been re-used. Those mortices are likely from soffit-tenons, holding the secondary joists, and they were good big lumps of timber judging by the mortices. So, this beam (now a post) wasn't from an agricultural building, but from another house.
Here's another one:
This is a classic diagonal housing joint for a wind brace, with a peg hole.........yet there is no wind brace, no peg, and there is an off-cut stuck into the joint to fill the gap. So this is another timber which has been re-used, and re-used from a building using mediaeval jointing techniques.
The principle posts go from the sole plate to the wall plate (ie from the bottom of the timber frame to the top), unbroken by the first floor. The girding beam, holding the first floor, is mortice-and-tenoned into the sides of the principle posts. Now, one of those girding beams has unused, large, mortices at close centres....so it is yet another bridging joist from somewhere else. Everyone always wants their cottage to have been made from timbers reclaimed from old ships, and often waste plenty of their time and mine showing me why they think they were from ships. This was seldom the case, particularly so far inland as I am. Different of course if you are on the coast. I can say with absolute certainty that the re-used timbers for this cottage didn't come from a ship, but cam from another, rather grander house.
Anyway, I made rather a lot of mess:
Eventually I made it all the way down to the sole plate in one section:
No surprise: most of the sole plate has rotted away.
So has the foot of this principle post. This will require the scarfing in a a new foot, and the classic joint for this work is the scissor scarf. I've never done one for real (just a small one on scrap soft wood in the workshop). Cutting in a lump of 5 inch square or bigger green oak will be a test:
Three inches of screwdriver buried. This means a new sole plate:
Just a quick note for those confused by "sole plate". This are often referred to as cill plates (sometimes sill plates), and all the classic literature refers to them thus. However, around these parts (East Anglia), they are universally known as sole plates.
Just to show that I do tidy up after myself:
Just time to fit the new belts to the bandsaw, and finish off a bit of re-sawing:
For my contribution to the never ending table saw versus bandsaw debate, I offer you 125mm of seasoned rock-hard oak, ripped full length in a couple of minutes with a kerf of 2mm:
DaveL, if you happen to read this, I have a surfeit of waste. A car full. I'd be delighted to see you over the weekend.........