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Oh I see. It does seem very strange it should appear so suddenly and especially as it was once we allowed water to supply the toilet cistern for the first time since buying the place and flushing that loo. Might it be an idea for us to dig down on the outside and see if we can find anything...

Is that as it should be or ideally not? I believe it's still as built in the 1960s and the whole estate has outhouses same design.

Blue line indicates where fresh water supply comes up from the ground. It then goes over the outhouse door towards the toilet internally and then into the cistern. We are the first house on the sewer run and it goes off in the direction of the red arrow. However there is a waste pipe coming into...

Hi all. We removed a conservatory and it's concrete slab base from this spot around Christmas time. No sign of damp bricks on the outbuilding at the time. About 6 weeks ago a water company engineer who was examining the sewer which is outside the back door, off to the right of this photo...

Some definitely might go in probably not at lot though due to the sprayed in insulation lower down in the cavity. If needed is there an adhesive which could assist in sticking visqueen to bricks? Quite right 60s indeed. I plan to try my best to get insulation in there without having to knock...

Perhaps the outer skin facing sheet of plastic could remain to act as a vertical DPC on the absence of one?

Glue/adhere.

There is sprayed in cavity wall insulation in the walls from around 2000 I believe. Found it to be there within the cavity when knocking back a downstairs window. What could be used to stick the wool insulation in place where I need it?

Makes you wonder how much behind the plasterwork in a lot of houses is just left uninsulated simply because nothing has been knocked back to open up the cavities. I suspect there's no vertical DPC either side of the first floor window but without knocking off the wall plaster I'd never know and...

Ok thanks and apologies for my confusion. The part I am struggling to understand is that I can see directly through to the soffit space as there is only the one piece of timber above the window (which the window is fitted to) between the gap in the plasterboard and the soffit space. If for...

Thanks. Is there actually a wall cavity here, as from the third picture I've posted at the top of thread, it can be seen that the window touches the soffits on the outside? I understand there are a few courses of bricks above the window recess on the inner skin but directly opposite this within...

[Post edited with new information]: I don't think the space above the window frame/recess goes into the loft area. I have screenshot these photos from our survey: Insulation can be seen at extreme edges of loft but this can't be seen above the plasterboard in front of the window frame...

Thanks. The timber above the window frame itself just has a gap above it into the space above the soffit so surely trying to insulate this would be difficult as the insulation would be in the soffit space as well as the cavity??

Thank you. Regarding the plasterboard, does there ideally need to be anything else there behind it to support it or would there normally be a gap behind it?

We are shortly due to have old windows replaced with UPVC. The plaster above the window recess (rear first floor bedroom) looked loose so I decided to tap a bit out to check all looked ok behind it. I am a beginner DIYer (first home project) and found what looks like one length of timber above...

I see. What is that on the diagram behind the expanding foam? Also do I need to cover the foam itself with DPC tape to seal it before plastering?

Are you able to recommend a suitable insulation brand? Would the rigid polystyrene sheet stuff work? It claims to be water resistant. So would the DPC, which I'm assuming I'd tape over the trimmed foam, then need to be trimmed after the frames are fitted? And would I need a DPC on the inside...

Hi all. The cavity, where old window is fitted to outside skin, where the plaster is knocked back, is quite wide. Big gap where insulation is missing but there is insulation further back. I suspect the brickwork is too uneven to fit cavity closers even if I try to knock bits off and repair the...

What does bridging the DPC mean?

Thank you Would a cavity tray be needed for two rows of bricks if there's a huge concrete lintel above the two rows which spans the whole cavity?