Unexpected damp on internal wall on terraced house.

[Pengwyn]

Hi guys.

This has confused me so hopefully someone can explain.

This is a typical 3 bed terraced, 2 living rooms.

The tennant has moved out this week so some superficial renovations are being done.

I knew we had a damp issue in the back room which I assumed would be the open chimney (at the top) and vented at the bottom. But when we had a closer look we saw some other issues.

All of the internal wall with next door is showing signs of moisture, it only raises a couple of foot but has effectd the skirting boards etc.
The two living rooms effected have concrete floors fitted.

Knowing I had some issues I had always looked up and thought that the chimeny/flashing would be the issue but now I am not so sure.

Can you get rising damp on internal walls ?

Could this just be an age thing for the house. It is 100 years old and the skirting boards and plaster wallas are at least 20 years untouched.

 

[^woody^]

Can you get rising damp on internal walls ?

Yes ... the damp comes up from the ground !

 

[Pengwyn]

Any more helpful comments would be appreciated.

 

[hotrod]

Photos would be very helpful. Any chance you can post some? Damp + chimney can often point to hygroscopic salts.

 

[Pengwyn]

I'll get some tomorrow.

Thanks