Removes tough outside stains like mold mildew oxidation tree sap and bird droppings.
How to remove stains from white gutters.
Apply product allow to penetrate for 2 minutes and wipe or rinse clean.
Try spraying an all purpose cleaner on the stains and scrub them off with a scrub brush.
This is a product that will remove them with remarkable ease.
Climb up the ladder and spray the black streaks with gutter cleaner.
Apply the chemical according to the manufacturer s instructions.
Your gutter will look as good as new.
Set up a ladder at one end of the gutter and fascia where the black streaks are located.
Reposition the ladder when necessary to reach all parts of the gutter and fascia.
If it is mold it will come of very easily with bleach.
Rinse with water and if necessary reapply the chemical to remaining stains and brush again.
On stubborn streaks let the chemical dwell longer being careful not to let it dry.
I clean this for customers all the time and the product to use is called gutter zap.
Dip your scrub brush in this solution and scrub off the stains.
If you haven t cleaned the debris out of your gutter yet do this first with a garden trowel.
Simple ready to use formula.
Rust residue dirt buildup and corrosion can all be removed by scrubbing the gutters clean.
Water based formula can also be used on mobile homes rv s and campers to remove black streaks and other stains.
These may require you to vigorously scrub or make take several attempts but it can all be removed.
Wet the gutter with a garden hose after pre wetting the area.
This bleach mixture will also kill any mold or mildew that s growing on your gutters.
I assume from what you have described it is a white gutter with aluminum oxidation on it.
Using a power washer clean your gutters to get the initial mildew and grime off.
Brush the gutter with a stiff bristle brush.
Dip a nylon scrubbing brush into the soapy water.
It is actually pretty easy with the right material.
You may also try mixing one quart of water with 1 cup of bleach and 1 teaspoon of dish soap.