Wtf is this? Is it from damp? Tell me doc how bad it is? It’s in the basement.
I come from a pretty dry country and have never seen this.

by qwertyazerty109

25 comments

  2. Those are minerals in the water that come to the surface when a moist-problem dries out.

  8. i swear those type of tiles are all over belgium. both on the floor and against the wall. i have it too. they are kristals of saltminerals. you have a humidity problem. you can just brush it off. but a treatment to deal with the humidity is advised. not sure if insurance will be helpful as they might consider it a pre-existing condition.

  9. That is salpetre, because you have humidity in your walls.

  12. These are hygroscopic salts. They often indicate a moisture problem, specifically rising damp.

    Not a thing to leave unattended if you don’t want your moisture problem worsening.

  13. En waarom de downvotes? Je ziet duidelijk haartjes en het is een oudere woning. Testen kan nooit kwaad. En ja dit is duidelijk opstijgend vocht. En injecteren ga u gang. Persoonlijk zou ik onderkappen en opnieuw aan waterkering aanbrengen. Bende cowboys hier.

  14. Je hebt opstijgend vocht. Dit is je plakwerk dat kapot gaat, icm zoutkristallen.

  15. Toch straf dat ik net op een werf bezig ben waar in het plakwerk asbest in zat..

  19. I don’t know what it calls, but the house i live in have 2 side of the walls have this at the bottom, and it’s exactly the corner walls where shower place is behind the walls, immediately i know it’s water leakage. Calls up the plumbing service and completely tear the shower system apart to find it’s like a little pond under the shower stand, life was thriving and it’s absolutely disgusting. Ended up changing the whole system.

  20. Yes, it’s “salt coming out of the rock” aka *salpetrae* in Latin or *salpetre* in English

  23. What you see are salt crystals. They are brought in by (capillary) humidity passing from the soil through the walls. The salts form when the water dries out.

    That’s why it follows lines: above the line is dry, under the line is wet, the line is where most of the drying is taking place.

    The salts are not a health risk at and you can just brush them off. However, in time, they will damage the plaster. If it just a local issue and you don’t use your basement a lot, you could leave it (best to assure good ventilation though).

    A real solution for such problems depends on where the water is coming from, the state of the building and the available budget. There are many companies specialised in the treatment of humidity issues.

  24. When a mommy house and a daddy house love each other very much…

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