Hello, I had the house drained by a company that has long been involved in drainage of villas and similar in the summer. It was done with isodrän boards against the outer wall to the basement. The house was built in 1938 with a cast concrete basement and with what I think is lime plaster on the inside of the walls. The house is situated on sandy soil and a slight slope.
I have noticed now after a couple of months that something white and fluffy has appeared on some outer walls, which I believe, after some googling, are salt efflorescence. I have placed a couple of moisture absorber containers and they filled up after a month, and I also saw condensation on a basement window. What could these issues be due to?
I have noticed now after a couple of months that something white and fluffy has appeared on some outer walls, which I believe, after some googling, are salt efflorescence. I have placed a couple of moisture absorber containers and they filled up after a month, and I also saw condensation on a basement window. What could these issues be due to?
It is probably because moisture is passing through the wall. Moisture absorbers you've placed are unfortunately of no use and just waste your money. A moisture meter is useful; by setting it up, you can see how much moisture there is and proceed accordingly.
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· Västernorrland
· 11 695 posts
And as already mentioned in numerous other threads, normal drainage rarely helps against all moisture in older houses since they are not built with capillary-breaking layers under the walls and slab.
A dehumidifier reduces humidity.
If you have a closed door between rooms, you need several, but if you have an open door or no door at all, one dehumidifier may be enough.
If you have a closed door between rooms, you need several, but if you have an open door or no door at all, one dehumidifier may be enough.