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Tips To Remove Mildew From Vinyl Siding

Mildew forms on vinyl siding after it is exposed to moist, shady conditions and can diminish the beauty of your home. Learn how to remove these unsightly green streaks and how to protect the vinyl so that mildew isn’t as likely to form again.     


  • plastic sheeting
  • rubber gloves
  • long handled scrub brush
  • water hose (with adjustable nozzle)
  • industrial strength detergent
  • bucket
  • bleach
  • vinegar
  • small scrub brush
  • ladder

Cover Foliage And Remove Surface Dirt

Place sheets of plastic over foliage that is located close to your home so that it doesn’t come into contact with the cleaning solution. Put on a pair of disposable gloves to protect your hands while you are removing the mildew stains. Fill a bucket with water and add a small amount of industrial strength detergent to it until it is sudsy.

Set up a ladder by one end of your home. Spray off the vinyl with a water hose to remove surface dirt. Begin spraying off the vinyl at the top of the house and work your way downwards. Dip a long handled scrub brush into the soapy water and apply it to stubborn stains. Move the brush back and forth while pressing down to help loosen the stains.

Remove Stubborn Stains

Stubborn mildew stains can be removed with bleach or vinegar. Add a small amount of either of these to the cleaning solution. Apply the solution to the stains with a scrub brush and allow it to penetrate for a few minutes. Bleach and vinegar work well on porous surfaces and will dissolve the mildew after several minutes. Move the scrub brush firmly over the stains and rinse them off with a water hose. Adjust the nozzle on the hose so that the stream of water coming out of it is strong. Remove the plastic sheeting from the ground when you are finished.

Prevent Mildew From Forming

After all of the mildew has been removed from the vinyl, minimize the chance of it forming in the future. Clean the gutter system out a couple times each year to prevent water from backing up and dripping down the sides of your home. Trim tree branches and foliage that is growing close to your home. Rinse the vinyl off several times a year to remove residue that could penetrate the vinyl surface and cause stains to form. All of these tips will help keep the vinyl protected.  For replacement vinyl or further assistance, contact a local outlet, such as Michel Home Improvement.