Wait for 10 to 15 minutes before continuing.
How to kill algae from gutters.
Mix 1 cup of bleach and 1 gallon of water together in a bucket.
It s always a good idea to test an inconspicuous area of gutters to see how they will react to the degreaser.
Use a scrub brush to scrub the mixture into any lingering algae stains.
Get tips on removing mildew from your home s gutters.
Do not attempt to get rid of algae stains by cleaning your roof with a power washer which can damage or break shingles or apply chlorine bleach in an attempt to kill algae or moss.
Some homeowners also try to get rid of algae by using bleach.
You can also spray the gutter and then brush it but make sure the rag is damp first to avoid abrasive friction.
Apply the properly formulated degreaser to the pole brush mop or rag that you ll be using.
Using bleach on algae requires brisk scrubbing and rinsing.
It can also rust your downspouts and cause your shingles to shed their protective granules prematurely.