Have an idea that the floor is still wet.
How to remove water stains from concrete basement walls.
Beware of potential water stains or water stains or efflorescence on concrete walls a white chalky residue on your basement s concrete before you close in the walls or cover the concrete floor.
To kill mold on concrete basement walls or for an ideal diy mildew remover pour 3 hydrogen peroxide into a spray bottle saturate the walls with the peroxide then let it sit for up to 30 minutes.
A the yellowish stains leaching through the coats of drylok and primer on your walls are an indication that water in either liquid or vapor form still is entering your basement.
It definitely won t get any worse.
Now i m trying a powder from acid you mix with water and this isn t working.
When groundwater consistently infiltrates the porous concrete walls through capillary action wall stains and related problems can occur.
Therefore the first step to correct any type of basement wall stain problem is to provide adequate foundation drainage in order to minimize the water infiltration.
Concrete is not totally impervious to water.
A few things the look for or look out for.
These stains result from a buildup of minerals found in most untreated water supplies.
Just throw a throw rug over it and forget about it.
Water stains form on cement when it is exposed to a continuous source of moisture such as a leaky faucet a flower pot damp laundry or a leaky seal around a plumbing fixture.
So you have two.
Stains on the concrete wall.
It may take a month depending on temperature and continual wetting of the floor.
Hard water contains calcium salts which can cause unsightly white stains on your plain concrete colored concrete or stamped concrete patio porch or basement or garage floor.
Clean mold off walls by scrubbing the area thoroughly with a bristle brush after about ten minutes to help to lift any residual mold out of the pores in the concrete.
Nothing seems to work.
It is soft water as it is rain water.
Many things may cause the salt deposits on the concrete including.
I have hard water stains rust salt calcium etc on the basement wall around to run off pipe from the bathrooms.