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Think I just used 75mm plasterboard screws with washers

If you’re doing it properly by building regs to get signed off, you’ll probably need to overboard with 40mm Celotex like I did.

Look what I did to mine last year (it's in projects), albeit mine was different construction to yours. Lightweight tiles, 2x velux windows, 100mm celotex between rafters, overboarded with 40mm. Made a massive difference to the room.

My single story, mono pitch had 100mm between rafters, overboarded with 40mm. Signed off by building control, so I'd assume you would need the same.

Same. I doubt they'd be interested anyway as it's not habitable.

Can you not connect it to the nearest downpipe like me? Or is it really not feasible? Other than that I think a soakaway is the only option?

My set up was the same as yours. When I replaced the roof, building control said that the downpipe would either need to be connected to the existing house drainage, or a soakaway. I had to lift some Indian sandstone paving and dig around to the house. Can you remove the planks closest to the...

Good idea thanks, I'll do that before I do anything else as at least it should eliminate damp going through the render/above the DPC.

I think I'm going to paint the bricks below the render with some water proofer, and if that doesn't sort it, I'll use some liquid DPM over the areas that get damp Bit of a bodge I guess, but short of building a cavity wall, it'll have to do

Yeah it was a conservatory of sorts, I've replaced the roof with tiles and insulation and has been signed off by building control. It only gets damp when it rains, no other times, so I don't think it is condensation.

Thanks for your reply, I've just taken these photos of the two corners. These show the over all build.

I’ve been renovating a small (3x3m) extension and have noticed damp patches on the concrete floor in the two corners furthest away from the house. They only appear during or after rain, and dry up afterwards. The adjacent plaster is dry, although the boards don’t touch the block work due to dot...

Guttering and drainage all sorted And now officially signed off by building control

Tee'd into existing drainage and dug out one sides worth. Tough going digging into heavy clay. Getting there...

Last big job is to connect rainwater drainage to the existing pipework. Eventually uncovered the pipework coming off the house, it was under slabs, and then 8 inches of solid concrete just need to replace the uncovered section with a T piece, and then dig a trench for new pipework. An additional...

Plastering all done, taking a while to fully dry. Really impressed with plasterer's work.

Hi, I went from brown varnish to white so pretty similar to you. I used two coats of stain block and then satinwood. I probably could have got away with one coat but wanted to make sure. Two years on and there's still no sign of the old varnish.

Outside rendering all finished.

Scratch coat on

They are pretty heavy. The BCO said they were fine to use, and could have wider centres than if I'd used 6x2.