dpc

~Vaulted kitchen asymmetric roof single storey extension ~Block work with cavity supporting Catnic type RSJ ~Bespoke glazing (2 x triangular) on RSJ ~Sliding doors under RSJ ~Ali cladding C section over external of RSJ My concern pre door/glazing install is the detail on the RSJ with the...

Hi Have recently repointed my west facing (prevailing weather) wall and it all went well. I'm not sure what to do with the dpc course though. It's slate but has come away with the old pointing in places (I've not raked it out). It feels like a bad idea to point over it and create a moisture...

Solutions for this cavity against the wall below door frame. Looks like previous had new flooring installed. The threshold going outside is fine.

Could I get your thoughts? Two years ago, a contractor completed phase 1 of my renovation, creating a passage to an annex. This resulted with a 7cm step down. I now plan to raise the floor level but noticed efflorescence on the concrete at the patio doors. Can I use a Bituthene layer to close...

I live in a 1920’s semi-detached house with solid walls. As we’ve moved into winter/wetter weather I’ve noticed a tide line beginning to appear on part of the hallway wall leading to the stairs. The other half of the hallway closer to the front door does not have this issue. We have also...

Hi folks, I just stumbled across this site and its going to be a huge help (I hope). Just started renovating a property purchased on auction. It's for me to live in not rent. It is in poor condition and although I'm not a builder I am a quick learner and willing to give it a go. I have huge...

Hi All, Just carrying out a diy project of installing new casement window where old wooden sash window was. I am confused regarding 2 points. Firstly the old wooden sash frames had vertical DPC pinned into the frame and pushed into the cavity. Would I need to replace this with UPVC casement...

Good morning, I am looking for some advice regarding my proposed solution to repair a 1920's concrete floor. The internal concrete floor is about 2 courses above the DPC. Consequently, the DPC was being bridged causing damp. I have dug a 6" trench around the perimeter of the room, to...

Hello, could do with some advice if possible. I am interested in buying a detached property which is roughly 100 years old. No DPC has been fitted. But instead 62.5mm of Celotex has been fitted throughout the house. (The house was renovated over the last year or so) The house is known to of...

Hi everyone, just looking for a second opinion on our filled-in gully! We recently found a broken drain below the gully outside the kitchen of our 1910 house (which the sink and washing machine drain into, so this had just been pouring into the ground for who knows how long!). We have just had...

I’ve recently moved into a house with a recent (5yrs) flat roof extension out the back. The extension has parapet walls topped with coping stones. Not long after we moved in we noticed damp at the right angle with the ceiling and after an inspection of the roof it seems there is either no DPC or...

Basicly I've removed my old conservatory in spring I was going to remove the concrete base as well but damaged my back when doing this. So over the summer I just laid square decking tiles over the old base to tidy it up in the knowledge I'd have to remove them and the base soon as its a brick...

There is a bit of damp in the external solid walls of my house where the patio has been built up above the level of the DPC, bridging it. I believe it may have also covered air bricks so the underfloor void is unventilated. I've sketched the current arrangement. I'm considering what would be the...

I've recently had an issue with damp next to a party wall where we had a unit pushed up to it. We're fairly certain now it was condensation / lack of air movement. Neighbour has no problems on their side. The skirting board was rotten, so I've taken it out and was surprised to find a second...

These engineering bricks have grooves on one face. Do the grooves serve a purpose ? Such as a better key for rendering over ? How would i search for this type of brick, as the lower half of my property is rendered and I need some for an extension. Alternatively, after Ive laid up to DPC with...

Hi all, I am in the process of planning my garden and I have a bit of an issue which I am not sure how to resolve. I have 2 air bricks at the back of the house which are about 100mm from ground level (cement floor). I DPC is also not that much higher. (maybe another 20mm). Is there a way to...

Hi, i have a 1930's house. Started getting a white residue line going across my property wall. I was told that my driveway being butted up against the wall is the reason. So i got a drainage specialist for a quote for aco drain installation. He said you have dpc its the two blue bricks above...

Hi, In need of a bit of advice or guidance regarding the possible need for damp proofing to an existing external wall that now becomes an internal wall after an extension. I plan to keep it as exposed brickwork as attached visual. The problem (or maybe it's not a problem) I have is the new...

Hello all. My first post but have been browsing the site for years. Intended to pave out the little front terrace but for the life of me can not figure out where the DPC line is so I can build it 150mm below it. It is a property built in the 1920's with a cavity wall. I've dug out patches of...

Thank you so much for reading this - please help! The DPC around my bathroom window is shoddy and there's a big gap between the metal lintel and the aerated block. I'm planning to stick Gorrila waterproof patch and seal tape to the window frame and dpc on the sides of the frame and the bottom...