You can also use a pressure washer but that may break sensitive shingles.
How to clean algae off metal roof.
They re likely to damage the shingles just be sure to wet your foundation plantings first and rinse everything in clean water when you re done.
Cleaning step 2 make and apply the bleach solution.
Pine sap decaying leaves and even road dirt that s drifted into the air can settle on your metal roof and stain it.
Allow the solution to soak into the shingles for at least 15 minutes.
Step 3 check for cleanliness and rinse.
Spray this mixture onto the roof and agitate it with a soft bristled brush to get it clean.
Step 4 take precautions.
Scrub from the bottom of the panel upward in a left to right back and forth fashion.
Cleaning algae stains 4 gallons of water 1 gallon of bleach 1 cup of tsp tri sodium phosphate or a phosphate free substitution.
Put on rubber gloves and a breathing mask before proceeding you so you can.
Mix the product with water for a 1 7 dilution ratio a gallon covers about 700 to 900 sq.
That places the three water jets at the correct angle to blast off the dead algae colonies.
You can physically remove the invasive plants with a long handled scrub brush as long as you are careful with the shingles.
To remove difficult algae spots use only a wet cloth sponge or low pressure washer.
Most of these substances can be removed by a mixture of cup tri sodium phosphate and 1 gallon of water.
There are different ways to clean moss and algae off of a roof.
The less expensive solution is to spray wash the roof with a 50 percent mix of water and bleach to get rid of the algae.
No pressure washers please.
Soak your cloth or sponge in the water detergent mixture.
To remove algae and moss growth from the roof dissolve one cup of ammonia for every 5 gallons of water used and work from the top to the bottom.
Roof cleaning with wet forget is easy as you can apply it with your feet firmly planted on the ground.
The jet tip nozzle will reach surfaces up to 30 so you don t need to use a ladder to get onto your roof.
Drag the rinsing tool in a forward and back motion as if you re vacuuming.
Never use a.