If you have greenish black stuff on your concrete patio it s probably mold mildew or moss damp or moist conditions from rain or humidity can encourage mold and mildew to grow in those nooks and cracks of concrete pavers or bricks.
Green mold on concrete walls.
Mold comes in a wide array of colors including black brown purple and green.
Green mold can create stains and discoloration on your concrete making the area look old and dingy.
Aspergillus this mold can appear green yellow brown grey or even white and is often found growing on and inside walls.
Green mold also commonly grows alongside molds of varying types like black or pink mold.
Concrete walls are not especially prone to mold and mildew which are words for the same thing.
There are more than a hundred thousand types of mold and thousands of species of green mold according to neil kao md an allergist in private practice in greenville and spartanburg south carolina.
In time this elevated surface moisture creates an environment conducive to mold growth.
Wood is a primary target for mold.
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.
Outdoors mold can mar the appearance of the patio and make the patio surface slick.
So what does the color green tell you.
You can see on the next picture that i ve treated the left side while the right side remains untreated where it is green and the treated side turned brown.
Cladosporium sometimes green other times brown or gray this mold can grow in cool climates as well as warm places and is often found growing on walls cabinets and carpets that have gotten wet.
Concrete is a poor insulator.
The recommended way to clean mold off concrete is to scrub it with detergent and water.
But even an inorganic material like concrete can become mildewed when spores begin to grow on dust dirt or old paint on its surface.
The dark confined spaces of kitchen cabinetry supply ample nutrients for green mold to flourish on even food like bread.
You should remove this mold quickly but without negatively affecting the environment.
Humidity based mold growth.
If you see green mold it could be just about any type of unwelcome fungus.
On a concrete surface where the mold or mildew was exceptionally bad and the concrete was a light color even though the green was out there remained a brown stain.
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.
During the winter months when the temperature drops the cool surface of a concrete wall can cause condensation.
When mold appears indoors it can present a health hazard.
Wooden floors ceiling beams and walls can host green mold colonies.