Rising damp ..

[Mechelle]

We seem to have a lot of rising damp on interior walls. The building is 16/18 c with the newer extension built in the 1980s.
There are no water pipes near that we can see so I think it’s capillary action sucking up.
Any help on what to do to sort it out would be greatly appreciated.. I had read to dig a channel round the rooms and fill with lime mortar or is this rubbish? They will be workshop rooms so no carpets going down

We have rising damp on lots more walls but think that could be due to cement render which we will be replacing with lime mortar.
Oh the joys of old properties

 

[Lacan07]

rising damp is very rare imho, a few photos might help narrow it down - what type of floor do you have, how high is the external ground?

 

[Mechelle]

I will get some photos today.
The wall is interior so the ground level I assume is what we can see currently carpeted. (And the carpet seems to be dry )but will find out what the substrate is.
It has all the signs of rising damp. The middle and top of the wall are dry Salts at a low level with damp plaster. What else do you think it could be?
There’s no plumbing nearby.

 

[alexander]

could be chimney ,roof, guttering. windows, external ground level, lack of ventilation if they are suspended wooden floors, condensation. to name a few things

 

[Mechelle]

No chimney. If it was roof or guttering it would be coming down the wall. We’ve got loads of leaks from those unfortunately.
They aren’t suspended floors and it’s got plenty of ventilation.
It shows all the signs of something coming up the plaster.. going to remove more and see if I can see anything else