How To Get Rid Of Mold On Vinyl Siding

Many home owners prefer vinyl siding because of the easy upkeep. However, if you live in a humid climate, the siding is more prone to mold. Mold is commonly black, green, or orange patches that spread by spores.

It is essential you clean mold right away before it spreads into your home as it can cause health issues. Here are tips to clean mold from vinyl siding.

Prepare to Work

For this project, you need:

  • work gloves
  • safety goggles
  • hose or pressure washer
  • stiff-bristle brush
  • sponge mop or extension pole
  • bucket
  • liquid bleach
  • oxygen bleach (optional)
  • powdered laundry detergent (optional)
  • white vinegar

Find the source of the mold. Mold may be caused by misplaced sprinklers, faulty gutters, or leaks in the roof. Shut off the main power supply to the house from the breaker box. Remove plants or furniture, and cover light fixtures.  

Rinse the Siding

Be aware not all manufacturers of siding suggest pressure washing. Check to ensure pressure washing won't void your warranty.

Set the PSI (pounds per inch) to 1200, and connect a 40-degree nozzle to the wand. Spray the siding, and keep the wand tilted, so the water won't get under the slats. You may also use a garden hose.

Mix the Solution

When using bleach, ensure you wear eye protection and gloves. Don't mix bleach with other household cleaners. You may add some laundry detergent to the vinegar solution to increase cleaning powder.

Mix one-third cup of bleach in a gallon of warm water.  If harming shrubs is a concern, use oxygen bleach instead. For light patches of mold, mix one-and a half cup of vinegar in a gallon of warm water

Dip the scrub brush in the solution, and scrub the mold in four to six foot sections. Don't scrub with metal fiber brushes, which damage siding. Attach an extension to the brush, or use a sponge mop, so you won't have to climb a ladder to reach the eaves. 

For an alternate cleaning method, pour the cleaner into the pressure washer. Set the pressure washer on the lowest setting, and spray the siding. Don't angle the pressure washer, so the cleaner won't get under the siding layers.

Rinse the solution using the pressure washer or a hose starting from the top. Repeat until the entire wall is clean. If the mold still hasn't been removed, increase the cleaner by two- thirds of a cup, and repeat the process.

Let the siding dry naturally. If you don't trust your skill, or you still can't remove the mold, contact a mold removal service.