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TheSiege 11-11-2007 08:50 PM

MOLD in the basement...options?
So I was tearing down the plaster walls in my basement to replace with drywall and insulation. and found that floor was kinda damp around the outside of the room, against the exterior walls, looks like the original 1922 hardwood floors were just carpeted over, and the first 6 inches suffered some water damage. the walls were also lined with some mold, not a lot, but enough to cause a problem. how do i fix this? i know i need to get gutters on the back to redirect the rainwater. but what else do i need to do?

TheSiege 11-14-2007 11:06 PM

yeah it looks like quite a bit of water is coming in. not enough to cause a puddle, but enough to touch the wall and it leaves water on my finger..and it looks like it is eating away at the cement

Chris Johnson 11-14-2007 11:52 PM

Check and repair the grade around the house as needed as a start then go from there.

AtlanticWBConst. 11-15-2007 04:36 AM

Remove materials that have been affected. Clean areas (NOT with Bleach and water)...but, with a fungicide.

Some Links:
"USING CHLORINE BLEACH TO KILL MOLD. Do not use ineffective chlorine bleach to try to kill mold growth and mold spores. Bleach is too weak even when freshly manufactured to kill mold. Bleach that sits on store shelves and in your home continually gets ever weaker over the passage of time. In addition, read the manufacturer’s usage directions on the bleach container. The manufacturer does not recommend its use to kill mold. Bleach is NOT an EPA-registered fungicide..."

evolve 11-19-2007 10:41 PM

Get it dried out and fix the water issue first thing. Check out the EPA site they have useful information about mold remediation, In particular check out

I just went through this process for a 1/2 bath and laundry area. We removed the badly damaged areas, hit the rest with fungicide, and then painted with kilz. The project is finally coming to a close. Just got the Wonderboard down and ordered tile today. Whew!

LawnGuyLandSparky 11-20-2007 08:07 AM

Also - it's possible you may NEVER be able to prevent water infiltration 100%, and if that's the case, you need a plan for how to handle it when it does come in, such as, not pressing the insulation up against the exterior wall, a vapor barrier, and allowing any leaking water to drain to a sump pit, and for proper air flow in and around the areas that would become damp.

KUIPORNG 11-20-2007 09:51 AM

Here in Toronto, it is against the code to have insulation directly contact with the concrete, it need a membrane in between, I used the roof tar paper and I think this serves well for minor moisture invasion, as paper will absorb the moisture and let it dry away....

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