Help

[Help needed20]

Have this damp in room and noticed the wall vent has no ducting going through it any advice ?

[ToughButterCup]

Just to clarify: the vent isn't a vent, it's just a wall ornament.... is that what you are saying?

[MikeGrahamT21]

I'd probably guess at penetrating damp or rising damp, especially since the radiator is so close.

 

Even if that air vent was working (if it currently isn't), it probably wouldn't fix that problem.

 

What type of wall construction is it? Damp Proof Membrane in place? Pointing on the outside in good condition?

[Help needed20]

Just a hole in wall with vent  cover either side , wall outside is in good condition 

[TonyT]

Any downpipes, guttering on the other side that has leaks?

what’s the wall construction?

What’s the floor construction?

under floor vents clear if any?

what’s the room used for?
Drying clothes with excessive moisture?

any extractor fans?

is the heating used in the room?

 

 

 

https://www.amazon.co.uk/Rempro-Neutraliser-Anti-sulphate-Tanking-Treatment/dp/B075HLS6L4/ref=asc_df_B075HLS6L4/?tag=googshopuk-21&linkCode=df0&hvadid=255660170781&hvpos=&hvnetw=g&hvrand=17943681255650039812&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9046864&hvtargid=pla-427215058929&psc=1

 

For removing salts.

 

[Help needed20]

Exterior wall with the vent is a cavity wall , concrete floor , room is  extended kitchen,  heating goes on no clothes put in this area , no downpipes or anything with leaks

[ProDave]

Photo of the other side of that wall, which presumably is outside?

[Mr Punter]

The wall looks quite new.  Maybe saturated / badly installed insulation and / or poor pointing.

[Help needed20]

When I get home ill post more pics etc , I shall be taking plaster off today as a day off

[MikeGrahamT21]

42 minutes ago, Help needed20 said:

Exterior wall with the vent is a cavity wall , concrete floor , room is  extended kitchen,  heating goes on no clothes put in this area , no downpipes or anything with leaks

What about the roof?

 

I wonder if there is a leak over the cavity and water is dripping all the way down

[Help needed20]

[MikeGrahamT21]

I have to question rising damp there. Looks like the render has go over the top of the DPC with no break in it. That left hand wall looks very damp also, paint peeling etc. How wet is the ground around there?

 

Digging a trench next to the wall and filling with pea gravel may help, but i'd say a DPC bridge is going to be an even bigger issue.

[Help needed20]

Just started getting plaster off , the bonding coat is so thick , is this normal ? 

[joe90]

I,m with @MikeGrahamT21 above, where is the damp course?, is the outside ground 150mm below damp course, that brickwork looks sodden!.

[MikeGrahamT21]

2 minutes ago, Help needed20 said:

Just started getting plaster off , the bonding coat is so thick , is this normal ? 

Yeah that looks roughly about the same thickness as what I took off in my 1960's bungalow, around 15mm thick.

[TonyT]

External levels look too high

[TonyT]

Dig up the concrete outside, dig down install stones wrapped in landscape fabric to aid removal of water from wall, see if you can do this along the perimeter of the wall.

French drain may be required.

allow time for wall to dry

[joe90]

8 minutes ago, TonyT said:

External levels look too high

Yes, if those vents line up the outside concrete is about level with the wooden floor!!!. No step at the door etc.

[ADLIan]

External wall becoming internal? No vertical dpc?

[ProDave]

I expected the wall with the radiator to be an external wall.  But looking at the outside picture it must be an internal wall?  What is the other side of the wall with the radiator?

 

Agreed the render should not go down into the ground like that, though it is a common fault.  That was exactly what caused the damp in a previous 1930's house that I had.  Once I chopped off the lower render, exposed the perfectly good slate DPC, ended the render just above the DPC it all dried out nicely.

 

 

[Help needed20]

Radiator wall is external , further investigation has found no dpc in affected are , I believe there is multiple culprits here 

[Help needed20]

[Mr Punter]

Do you think that is a bricked up fireplace?

[Help needed20]

I think I may have found the issue , neighbour has a raised flower bed which is directly on the corner I have the issue .

[joe90]

I hope he is amenable ?