how to treat concrete basement walls to keep moisture from accumulating and turning into mold?


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Thank you so much for posting this question! My wife and I just bought our first home with a basement, and I was told by the previous owners that we need to waterproof the basement of our Winnipeg home. I had heard that we could just treat the walls for moisture, but I had no idea how to do that.
Shaniqua5 years ago
First, make sure it is mold you are dealing with. Second, find the source of the water. Is it humid or are there any leaks? Third, depending on the source of the water and how much there is, you need to fix the mold that is already there then begin waterproofing your basement. You can waterproof the walls, floors, fixtures, and pretty much anything you keep in your basement.
Libahunt5 years ago
Depending on the climate and the source of moisture ventilating the air might be enouch. In Northen Europe (for generally unused and not heated cellars) it works perfectly that for summer windows are covered with a lattice only and for winter closed and warmly isolated.

If your home is in more moist place, then Canucksgirl gave a good answer.

But there is no way to help it by treating walls from the inside, if any product promises to do that, it's a lie. The moisture will do it's damage somwhere else then.
Vyger5 years ago
Are you sure its mold and not just mineral deposites or crystals. Salt peter forms on the inside of walls if I recall. Its not mold.
canucksgirl5 years ago
You need to identify the cause and source of the moisture and deal with that versus treating the concrete. Do you know if the home has an exterior weeping system? Perhaps it has the old clay pipes and they are damaged. You'll know the answer to this if you are getting moisture in your basement after a rainfall. Unfortunately the solution isn't cheap. The perimeter will need to be dug up and new drainage system installed. Its at that point you can look at adding waterproofing measures to the exterior concrete to prevent any standing water from entering your home. I would advise talking to an expert at this point to determine your specific issue and what remedies you have available.
+1.

Deal with the source, then add protection in case that fails.

Call before you dig!