These dark stains can be removed by wiping away any excess grease then dissolving the stain.
How to remove mildew from stained cedar siding.
It s also safe for plants that may inadvertently get dripped upon during the cleaning process.
Vinegar solution 30 vinegar to 70 water simple green.
Oxygen bleach removes algae mold and mildew from cedar restoring much of the wood s natural beauty.
Tip 4 removing grease stains dark spots on cedar products such as shake siding can sometimes be made by oil or grease that collects dirt and soon becomes dark.
It appears to make mildew vanish but on porous surfaces such as wood or vinyl siding chlorine evaporates too quickly to get to the fungi s roots guaranteeing regrowth.
Removing the the wood mold with oxygen bleach.
Oxygen bleach hydrogen peroxide.
The safe and effective way to clean the wood is oxygen bleach.
When it is time to refinish clean off the mildew with a mild bleach solution oxygen bleach is preferred or commercial mildew remover.
After the wood has been thoroughly rinsed and allowed to dry refinish with a coating that contains an effective mildew cide.
Re staining does not solve a mildew problem.
Chlorine can also damage foliage and stain clothing.