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Ok, I’m with you now. So you mean build a frame and then joist in between it, fix floor deck then build up off it ( or walls up first then deck) Floating floor and not fixed down. I’d have to have vents in the concrete blocks for this ? I was talking screw sole plates for walls to outside of...

What I mean is, will the air gap between breather membrane and cladding also provide adequate floor ventilation.... if I’m using 150mm joists, then the floor decking will be 100mm above the top of the sole plate and should ventilate out and down the cladding gap. If that makes sense

Yeah, we are getting mixed up a little. My fault. So The perimeter sole plate on outside of block, correct. With DPC between. I then thought the joists would rest on top of the sole plate, so they can be fixed Securely in to it to prevent movement. If they sat on the remaining 100mm of the...

DPC ...But the joists will rest on the sole plate? Not the block What ventilation will the floor need Would a screed floor on top of slab be better, membrane, insulation then 70mm screed ‍♂️ I don’t even want to do it but prices are mental in Essex .

Thanks for the reply. I’m going to 18mm board the outside, then membrane, batten, weatherbord so that’s all good. Regarding sole plate, I might be being thick. It will be flush with outside of blocks so everuthihbis flush outside , but are you saying put the joists on top of the sole plate, but...

Yeah I get it’s the better option. Would you put the floor joist on to the wall plate, or rest and fix it to the other half of the concrete block ( as will be laid on side) to achieve a lower floor?

Thanks for the reply, I did think this but the DPC will be pierced when I screw the timber plate to the concrete block

Evening, being pestered to do a summer house for a family member and have a couple of questions. Base: There is a current slab of 100mm and relatively level. Best way to begin build? I was thinking Concrete block laying on its side with a DPC underneath, then screw floor plates to them which I...

Will just chuck it back up before boarding

Evening On a garage conversion, renewing the ceiling and have took insulation down to run cables and pipes. Wondering, Now the garage is a habitable insulated room. Ian the insulation between ceiling and 1st floor bedroom above required?

I have seen these but not heard much about them. Also couldn’t find any prices

Simply asking why timbers spanning the width isn’t the same in terms of strength as steels spanning the length with timbers in between them. Both ways the weight bears on the walls. I’m not loosing no sleep, and it’s good to have ideas in your head cos not all SE have the same opinions as I...

Johnny with all due respect, I’m a tradesman and take interest in knowing what needs to happen and gaining knowledge in areas of the building game I don’t know about. Everyone here knows I need a SE and building control involved, so I’m not about to start getting in my loft and working on a...

As in the depth of the joist is bigger than the gap between inner leaf and roof tile .... wouldn’t that depend on the roof pitch ? Or am I missing the point I had one loft guy round and suggested steels running width ways as length ways will impede stair location

Have a question in regards to a loft conversion with a truss roof. Instead of steels being installed length ways between gable ends, then joists between them and supporting the roof (I think this is the normal way?) Why can’t timber joists just span the 2 outside walls and the roof be...

If you’re good at your main trade then lots is transferable to other trades. I would suggest it’s the knowledge that would lack over the actual physical ability. Example, I’m a Plumbing and Heating engineer and I could do pretty much every domestic electrical job to a high standard but I...

Any SE on here wanting a job of doing configuration for my loft conversion? Truss roof

It’s not a job I’m having done, it’s a job I have been asked to price. Im a plumbing and heating engineer by trade who does most other works also. I work with a sparks who’s the same. However we don’t do the brickwork or plastering. Was more wondering if a job like this has a sqm price or a...

I know this a how long she a piece of string question .... but what’s the price range for converting a garage in to a room. Assuming excavate and lay need foundations for brickwork and window, block and brick door opening. Fit window. Insulate roof and 3 walls, insulate and screed floor...