How To Remove Algae Stains From Siding

Never use standard commercial bleach to kill algae on a home s exterior or to treat stains on vinyl siding.

How to remove algae stains from siding.

Vinyl siding is durable but it is still susceptible to dirt and stains. Green stains on siding are usually the result of mold mildew algae or moss. Always test any type of cleaner on a small section of siding to be sure it doesn t stain streak or otherwise damage the siding. If this mixture doesn t remove all of the algae try a stronger solution using oxygen bleach.

Do not use a forceful spray of water from the hose when cleaning your siding. Unlike mold this type of growth is mainly cosmetic and can be removed using minimal force and a few basic materials. The algae may appear brown or green in color and remain damp diminishing the appearance of your home and spreading out over time. Less volatile than chlorine it removes mildew on and below the surface as well as algae dirt and oxidized paint but won t harm plants or clothing.

A good cleaner to try first is a mixture of 70 water and 30 white vinegar. Below is information on how to use clorox regular bleach 2 to remove patio moss mildew stains and exterior mold. Oxygen bleach hydrogen peroxide. The stains can be different colors which can often tell you what is causing the growth.

These stains occur naturally over time. Green stains are almost. Black stains are usually a sign of mildew algae mold or fungus. This may cause water to build up beneath the siding and swell over time.

Fortunately siding can be cleaned to remove not only green stains but other dirt and stains that may be taking over the homes exterior. Standard bleach will poison any surrounding grass and plants. When house siding begins to turn green it diminishes the exterior appearance of the home. Brown stains on wood siding can signal that moisture is forming underneath the wood.

How to remove algae from siding 1. In regards to clorox regular bleach 2 it is an epa registered disinfectant and is an approved and safe product to help eliminate moss mold and mildew from outdoor siding tile brick stucco and patio stone.