Parapet wall render issues

Joined
10 Sep 2012
Messages
41
Reaction score
0
Location
London
Country
United Kingdom
Hi,

Recently discovered mould on the south facing wall of my house close to the party wall. It was hidden behind a cupboard so we didn't notice it developing.

I'm not sure if this is from condensation or a leak. Can't see any obvious places for water to get in on the back wall.

There is however an obvious problem with the parapet wall render. It is all falling off, and it has been done twice now in six years. I'm assuming the two are connected.

Can anyone advise how this render should be applied so that it doesn't fall of in slabs?

Would you agree that this is the likely cause of the mould?

Any advice would be greatly appreciated.

Many thanks,

John
 

Attachments

  • IMG_6500.JPG
    IMG_6500.JPG
    84.8 KB · Views: 392
  • IMG_6499.JPG
    IMG_6499.JPG
    144.1 KB · Views: 358
  • IMG_6498.JPG
    IMG_6498.JPG
    262.7 KB · Views: 381
Sponsored Links
It might be just the photo angle, but where the parapet and roof tiling meet the chimney look like water traps.
 
Thanks Notch.

Just had a closer look. Do these pics clarify? The chimney looks pretty leaky...
 

Attachments

  • IMG_6503.JPG
    IMG_6503.JPG
    394.9 KB · Views: 339
  • IMG_6505.JPG
    IMG_6505.JPG
    382.8 KB · Views: 356
  • IMG_6504.JPG
    IMG_6504.JPG
    425.6 KB · Views: 335
Looks like condensation, does it wipe off?
The render is falling off in sheets because it has not been prepped properly.
The chimney head needs attention but doubt that is causing the problems you are having.
 
Sponsored Links
Thanks ker plunk.
Yep, I've washed it all off. So you don't think it's mould? That's good news. Guess it makes sense as it's nearly all on the cold back wall.

J
 
Its been condensation spotting on a cold wall, if you had furniture sitting there then air wouldnt get circulating.

Bit of bleach on a sponge should get rid of it.

The maintenance on your roof can wait till the better weather.
 
Agree with plunk, black spot mould is a manifestation of internal moisture, cold surfaces and poor air circulation.
 

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Sponsored Links
Back
Top