It attacks the oxidation and not the paint or material.
How to wash aluminum gutters.
A simple solution of water and white vinegar works very well for cleaning the outside of the gutters and won t corrode aluminum.
If you have aluminum gutters you ll want to be careful when choosing a chemical as some may cause aluminum to corrode.
For aluminum try gutter zap which removes electrostatic bonded streaks with little scrubbing.
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.
Use this solvent to scrub off the outer surface of your gutters with a stiff brush or a piece of cloth.
On a windy day some of the spray might fly back into your face and you don t want this stuff in your eyes.
Spray a five to ten foot section at a time because otherwise the gutters may dry before you have cleaned them.
Rinse the gutters with a hose.
F 13 gutter grenade is a multipurpose gutter cleaner that s safe for all types of gutters.
Aluminum readily welcomes a solution of warm water and acetic acid more commonly found in the kitchen as white vinegar after scooping the gunk from your gutters with the trowel mix a bucketful of solvent using 1 cup of vinegar for every 3 gallons of water.
Simple green makes a concentrated environmentally safe cleaner with good stain removing properties.
Spray the gutters put on your safety glasses and don rubber gloves if your skin is particularly sensitive to cleaners.
Use a sprayer attachment if you have one and spray the gutters from the ground to rinse them.