Dpc

[Charlie George]

Measured it & it comes out where top of brickwork is , so I scraped away a bit of paint & you can clearly see dpc.

Hopefully these pics are a bit better.

Level with internal FFL then ?

 

[5oysterman2]

Level with internal FFL then ?

Yes

 

[5oysterman2]

Removed a couple of blocks & behind it was full of expanding foam(pic 1)

Removed as much as I could & where it attached to outside wall was very damp. I cleaned out quite a lot of mortar, broken block/brick & foam/CWI.

If I put my hand down into the cavity LHS as you look at wall i removed CWI which was very very wet.

The CWI to the left & right of the opening above the dpc are dry, only wet if i reach down into the cavity.

I am looking at replacing CWI in the near future anyway but is there a way of checking whether the render has had it's day too.

I thought about using a dehumidifier to dry out anything that was damp in the cavity & then wait until we have rain & see if any does come down or is that too simplistic?

 

[ree]

OP,
Well done for your continuing investigation & finding the damp CWI & rubble that I referred to in post#8.
If you remove block down to FFL level then it would be clear if there now is a DPC at that level or does the DPM go under th blockwork?

You need to remove as much rubble as possible, and to remove all the reachable CWI - you could open the wall up further to the right? Wall openings should be a few feet apart for structural safety.
The render looks fine but definitely observe during rain - or when the exterior is being hose pipe sprayed.

Despite the render looking fine moisture is still maybe penetrating the wall? I think moisture is rising in the cavity rubble & CWI.
Has the gully trap been cleaned out?

 

[5oysterman2]

OP,
Well done for your continuing investigation & finding the damp CWI & rubble that I referred to in post#8.
If you remove block down to FFL level then it would be clear if there now is a DPC at that level or does the DPM go under th blockwork?

You need to remove as much rubble as possible, and to remove all the reachable CWI - you could open the wall up further to the right? Wall openings should be a few feet apart for structural safety.
The render looks fine but definitely observe during rain - or when the exterior is being hose pipe sprayed.

Despite the render looking fine moisture is still maybe penetrating the wall? I think moisture is rising in the cavity rubble & CWI.
Has the gully trap been cleaned out?

Gully trap is clear.
Must admit i was concerned about taking anymore blocks out, thinking it might weaken the wall too much.

Will get on it again today. Didn't check the DPC/DPM DOH.

Will do that later