According to tim carter author of the nationally syndicated column ask the builder bleach will kill the moss growing on your roof.
Remove moss from roof with bleach.
The most effective method of cleaning algae and moss from a roof is with a 50 50 mix of laundry strength liquid chlorine bleach and water.
Moss roots are thin and loosen from your roof through contact with the bleach.
The bleach will kill the algae or moss but rinsing won t necessarily leave the roof sparkling clean.
Spray the bleach mixture on the roof.
Chemical solutions can adversely affect the environment as well as damage foundation plantings growing beneath roof overhangs.
Kill it as soon as you see it.
Opt for the least toxic moss killer.
Algae will disappear and wash away with subsequent rains the association advises.
When the moss is dead scrub it off then install zinc flashing to prevent more moss growth.
It is this very oil tar and asphalt which protect your shingles from the elements.
Moss may grow on parts of your roof sidewalks or driveway that aren t directly exposed to the sun.
If you decide to use a bleach solution or other readymade roof moss treatment protect nearby plants with plastic sheeting.
To really get all moss and stains off your roof use a stiff bristled scrub brush.
1 to 3 cups chlorine bleach 2 gallons of water.
Do this at the end of the cleaning solution s time frame just before you rinse the roof with water.
The bleach will kill off any leftover moss over the next couple of days.
Remove the harness system from the roof.
To remove moss you first have to kill it.
Moss may look quaint atop your house but it can greatly shorten a roof s lifespan.
Chlorine bleach will do the job but it can damage or discolor certain types of roofing such as wooden shingles.
Moss growing on a roof lifts the shingles and allows water to seep underneath and rot the roof deck.
Brush down from the top of the roof toward the ground to loosen and remove the moss.
Your shingles are made of a fiberglass mat that is covered with protective oils tar and asphalt.
Wind sunlight water etc.
Spray any plants and grass underneath the roof with water again once the process is.
Moss is a collection of a bunch of smaller plants that have grown together.
Oxygen bleach however will kill the moss without harming your roof.
Use a solution of bleach vinegar or dish soap for this.
They thrive in shady locations.
If the moss continues to grow it can damage your roof or concrete.
The reason you shouldn t use bleach to remove moss from your roof has to do with the composition of your shingles.