How To Clean Your Roof Stains

Use a cleaner specially made for killing algae or by spraying a mixture of one part bleach to four parts water with tsp trisodium phosphate or other detergent added in a garden pump up sprayer.

How to clean your roof stains.

Make your shingles last longer. Algae can be killed and the stains removed using chemical cleaners though they usually return over time. The chlorine bleach roof cleaning method roof cleaning contractors who use sodium hypochlorite chlorine bleach mix it in high concentrations with other chemicals such as trisodium phosphate also known as tsp. Bring your garden hose or water sprayer up to the roof.

Cleaning moss and algae 1. Here s how to clean the. Black streaks on the north and west facing and shaded. Allow the oxy bleach mixture to sit on the shingles for about 15 minutes.

Allow the bleach to remain on for 15 to 20 minutes then rinse it off with a hose. Do shingles on your north west or other shaded roofs have streaky moldy stains. Starting from the bottom. Allow the oxygen bleach to sit on the shingles for 20 minutes.

They spray it on the roof and wait for it to dry and then re apply it several times as needed. Set the nozzle at the highest pressure setting and hold it 12 inches from the shingles. Fit a squeeze trigger nozzle onto the end of your garden hose turning it clockwise to tighten and turn the pressure on high. Rinse the section of the soffit you just scrubbed washing away all of the dirt and rinsing enough to clear the surface of detergent and bleach.

Set the garden hose on the spray setting with the highest pressure water and hold the nozzle close to the shingles when rinsing. Use a garden hose to rinse the stains and cleaning solution from the roof. Spray your cleaning solution. Rinse from the top of the roof down to avoid re staining the shingles with the dirty water.

This will remove any stains that were loosed up by the oxygen bleach. How to clean roof stains wash your shingles where the sun doesn t shine. Mix your cleaning solution. Soak the shingles with water.