Efflorescence is often seen as a white fluffy deposit of salt crystals on cementitious e g.
Yellow stains on concrete block on basement walls.
Mold is a living organism that occurs in wet environments.
Methos for removing un wanted discoloration or stains from concrete.
Iron ochre can be found all over the united states and canada and is common wherever there are high levels of iron in the soil.
The chalky white substance so often found on old brick cement or cinder block walls is efflorescence.
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.
When groundwater consistently infiltrates the porous concrete walls through capillary action wall stains and related problems can occur.
Here we illustrate and explain the cause cure of reddish brown or pale yellow bubbly surfaces on walls especially masonry walls or on masonry chimneys caused by leaks moisture efflorescence and sometimes creosote leaks.
Red or brown building stains deposits that are not mold.
Moisture dark efflorescence stains or growths on building surfaces.
These stains result from a buildup of minerals found in most untreated water supplies.
So you have two.
If you have reddish or orange stains on your basement walls floors or drywall there s a good chance that the source of the stain is something called iron ochre.
Stains colors or discoloration on concrete surfaces.
The white powder is efflorescence or minerals left behind as water that has flowed through the concrete walls evaporates.
This article provides a catalog of types of stains found on concrete surfaces.
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.
Water repellent sealers such as the armor sx5000 or armor sc25 can be used to reduce the absorption of the water on the surface or a coating can be used such as the armor ar350 or armor ar500 to provide a protective film over the entire surface.
Walls floors ceilings including un wanted stains from various causes deliberate concrete coloring processes stains or acid treatments.
Crusty white salt deposits which are leached to the surface of mortar or masonry as water passes through it.
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.