Solutions range from one cup tsp and one gallon of bleach per five gallons of water to one cup tsp and 2.
Roof lichen bleach.
Bleach solution that drips from your roof during or after application can kill landscape plants and ruin outdoor fabrics.
The recommendation for most of the products is to hose down plants that may get dripped on when applying the solution to the roof.
My roof has skid marks.
Chlorine bleach may be applied to your gutter and flashing or your shingles to change the color.
Allow the bleach solution to remain on the roof for 10 to 15 minutes.
I used a pump sprayer and applied a heavy mist to the roof two times about an hour apart.
Mix 1 cup of bio degradable liquid dishwashing soap and 1 cup powdered oxygen bleach in 5 gallons of water and apply to lichen prone areas with a push broom brush or hand scrubbing brush.
Wait 15 minutes and then repeat the application a second time.
Get a scrubbing brush and water to gently brush the lichen off.
Do not let the bleach solution remain on the roof any.
If your moss problem is extensive and you plan to use a large quantity of chlorine bleach bear in mind that it will accelerate the corrosion of your metal gutters and downspouts.
True to its name chlorine bleach may bleach your asphalt shingles lightening or changing the color.
Once applied the wet forget starts to work on the surface and then over time will remove the dead lichen with exposure to the wind and rain.
Another way of removing lichens from the roof is through using chlorine bleach.
8 spray the cleaning solution onto the shingles using a garden sprayer.
Commercial chemical preparations though costly have proven effective.
A heavy spray of solution will kill the lichens and moss but results take time.
7 protect nearby shrubs and lawn with plastic tarps.
Chlorine bleach will kill roof moss but when you rinse if off the roof it may kill the plants growing alongside your house too.
Always use a soft bristle brush as not to damage the surface where the lichen clings.
Although it s an inexpensive option to remove lichen from your roof the end result may corrode downspouts gutters and flashings.
Rinse with clear water.
For smaller areas you can use a toothbrush with a bleach solution.
Scrub the moss and lichen from the roof with a long handled scrub brush.
To apply thoroughly saturate the surface with the wet forget outdoor cleaner.
Next thing you know it could grow a mossy beard.