Is exterior wall studs leaving marks on the wallpaper = moisture problem?

[Anders_Nilsson]

Looking at a house on hemnet. In the pictures, you can clearly see that the wallpaper has dark areas after the studs. It seems (will take a closer look when I visit the house) that it only applies to the exterior wall.

The house was built in 1967 and has a brick facade (mexi). Are the above symptoms clear indications of moisture? I've never seen this before. Otherwise, there are no signs of moisture like peeling wallpaper. Everything looks completely normal between the studs.

There is a small roof leak at the chimney. Otherwise, the house is worn but no obvious disasters. Could it be that the studs are pressure-treated and the treatment agent has migrated into the wallboards?

Anyone have ideas? It seems to be the same in all rooms against the exterior wall, but no other visible signs of moisture, and according to the realtor, there's not even a noticeable smell in the basement.

I'll check on-site but thought I'd get some ideas from the people on the forum about what it could be and what to look for.

/Anders

 

[anaitis]

Looking at a house on hemnet. In the pictures, you can clearly see that the wallpaper has dark sections after the studs. It seems (I'll have to look closer when I visit the house) that it only applies to the outer wall.

This is a common phenomenon in houses from that time.
The studs create thermal bridges, which make the wall colder right there.
Then the moisture in the indoor air condenses right there. Then dirt sticks more easily to these
moist areas.
You can often see the same effect from nail heads.

It is therefore not a sign of leakage from the outside.

 

[ROINE Hellström]

Looking at a house on Hemnet. In the pictures, you can clearly see that the wallpaper has dark parts after the studs. It seems (will have to check closer when I see the house) that this only applies to the exterior wall.

The house was built in 1967 and has a brick facade (mexi). Are the above symptoms clear indications of moisture? I've never seen this before. Otherwise, you don't see signs of moisture like wallpaper lifting or anything. Between the studs, everything looks completely normal.

There is a small roof leak by the chimney. Otherwise, the house is worn but no obvious disasters. Could this be that the studs are pressure-treated and the impregnation agent has migrated into the wall panels?

Anyone have any ideas? It seems to be the same in all rooms against the exterior wall but no other visible signs of moisture and according to the realtor, there is no noticeable smell even in the basement.

I'll have to check on site but thought I'd get some ideas from the people on the forum about what it could be and what to look for.

/Anders

Ventilation problem