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Question for you clever ppl: Why are doors stuck in the outer leaf? Ease of weatherproofing? Seemed more efficient to me to put them in the inner leaf with a nice rendered reveal on the outside but nobody seems to do that.

Hi - fairly simple question for you: My Mains water pipe runs under the house through the crawlspace on the oversite then through the wall into the concrete floor of the old kitchen. Now I need to run it under the new concrete floor (no screed to run it in - don't ask). Do I just run some MDPE...

When you've pulled the tarp back off your lively new roof that's ready to be glassfibered and find that it's been leaking and all your celotex has a bit of water between it and the vcl (and some between it and tge osb top deck too...) what do you do?

Hi, Quick question re. installing one of these. It's going to be a 100x150 one so pretty hefty! Is there any need to get the warm roof kerb extension velux sell? Seems like it'd be easier just to put 120x45 timber around where the window's going to be fitted, stick the roof insulation round...

On account of being a massive ponce I like the idea of having my new 220x47 flat roof joists exposed. And a nice ply deck on top also exposed. But this buggers my VCL detail! So the question is: Is it ok to have joist> ply deck > VCL > Firring > Celotex > OSB 3 > single ply membrane? And if so...

Hi, Just about to lay the DPC on top of two courses of celcon and then the sole plate on top of it & I have two questions: 1. Does the DPC usually get bedded into a layer of mortar to take up any variation in the blocks? 2. Are masonry nails on 600 centres through the sole plate, DPC and into...

How important is it to get the wall dead centre? I've got 600mm width by about 600 deep in clay but there's a bit of a banana shape to it that I only eally noticed after the concrete had gone in TBH and the wall gets to about 7cm from the edge in the middle, It's single storey & fairly...

The neighbours four year old extension starts on top of our shared (probably Victorian) garden wall. I've been digging a hole to see how far down it goes down / whether they underpinned it at all and... there's nothing there. It stops one course below ground level. I'm supposed to be building...

I've got a question about screed. Can it be powerfloated for a nice finish and if so how long after sticking it down do you have at it? Don't say 'you should get a professional in'. I know I should get a professional in but that would be a lot less interesting. Also, on the same subject -...

Simple question for you: I'm moving an inspection chamber out of the footprint of a new extension but what do I do with the old inspection chamber (not connected to any drains any more)? It's only 65cm deep but bang in the middle of where the new slab is going. Do I just knock the top few...

First post and all... Attached is a picture of the lean-to attached to my bedroom. It's got a solid concrete floor above the crawl space which is held up by hopes, dreams and a lot of rotted wood, a double glazed door that sweats, a roof with no insulation and solid, cold walls. I was after...