Roof Stains Away

Algae can be killed and the stains removed using chemical cleaners though they usually return over time.

Roof stains away.

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. 1 gallon of hot water 1 full cup of chlorine bleach 1 cup of powdered laundry soap. Lichens growing on building surfaces lichens are not the. Re roof an expensive option.

Extractive bleeding stains on asphalt roofs see extractive bleeding on shingles and see roofing material defect. 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. Fungi and other stains on the roof become slick when wet so you ll need to wear a harness or safety rope hard hat and have a sturdy ladder nearby. Apply roof be clean just spray it on after proper dilution as directed with an.

Your roof likely has more useful life. They spray it on the roof and wait for it to dry and then re apply it several times as needed. Step 3 mix cleaning solution there are a few ways you can mix bleach but the most common is to take one part chlorine bleach three parts water and a sprinkle of liquid laundry detergent or tsp.