Rinse with water and if necessary reapply the chemical to remaining stains and brush again.
How to remove black stains from aluminum gutters.
How to get black streaks off gutters fascias step 1.
The black streaks are a result of electrostatic bonding of tar asphalt from roofing material and other debris to aluminum metal material.
You can try a variety of products but success depends on your geographic area.
Place the ladder where you want to clean trying not to scrape or damage the gutters.
Dip a nylon scrubbing brush into the soapy water.
Scrub the gutters with the soap mixture to clean them.
Set up a ladder at one end of the gutter and fascia where the black streaks are located.
Climb up the ladder and.
The warmer it is outside the better it works.
Rain carries them down the sides of the gutters where they stain the aluminum.
Fill the spray bottle with gutter cleaner.
Fill a bucket with a mild liquid soap such as dish soap laundry detergent or body wash.
How to remove stains from white gutters.
Apply the chemical according to the manufacturer s instructions.
Streak getter will break down this bond which will allow you to remove the unwanted streaks off your aluminum gutter with little effort no scrubbing.
Brush the gutter with a stiff bristle brush.
Using a power washer clean your gutters to get the initial mildew and grime off.
Or grab a ladder that can remain stable while scrubbing from it.
For that mix half cup of household liquid detergent with a half cup of bleach in two gallons of water.
Attach a soft bristled brushor mop to the end of an extension pole.
Shut the bottle tightly and turn the nozzle to the on position.
Use this solvent to scrub off the outer surface of your gutters with a stiff brush or a piece of cloth.
Here are some products to try.
If you haven t cleaned the debris out of your gutter yet do this first with a garden trowel.
Once the mixture is applied to the gutters let it stay for 10 15 minutes before rinsing it off with a garden hose and a nozzle sprayer.
Simple green any oxygen bleach whitewall tire cleaner alumklean by wsi or a mixture of 1 3 cup of a strong household detergent and 2 3 cup of tsp cleaner.