Clean Black Streaks Off Gutters

Reposition the ladder when necessary to reach all parts of the gutter and fascia.

Clean black streaks off gutters.

Set up a ladder at one end of the gutter and fascia where the black streaks are located. Rinse with water and if necessary reapply the chemical to remaining stains and brush again. Ready to use formula makes cleaning gutters easy with a simple spray on wipe off application. The black streaks are a result of electrostatic bonding of tar asphalt from roofing material and other debris to aluminum metal material.

The gutters were over 30 years old with heavy oxidation and were never cleaned. Specially formulated to remove tough soils from exterior metal vinyl plastic and aluminum surfaces. 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. For that mix half cup of household liquid detergent with a half cup of bleach in two gallons of water.

If your household water pressure isn t enough to generate the proper nozzle pressure at the jets the manufacturer recommends boosting it. Even for vinyl gutters liquid detergent alone cannot be used to clean the gutters properly. Use this solvent to scrub off the outer surface of your gutters with a stiff brush or a piece of cloth. Brush the gutter with a stiff bristle brush.

Gutter cleaner removes black streaks dirt mildew stains and more. The contaminants will attach to the gutter oxidation in another process called electrostatic bonding and over time will cause those unwanted black streaks. The warmer it is outside the better it works. I haven t used it for anything else though.

Some professionals have said that the black streaks are also caused by the tar in asphalt shingles but this isn t likely because the streaks appear even on houses with metal or tile roofs. I usually use it around 10 1 and have no problems getting the black streaks off. You can cut the f 13 to a 20 1 ratio. Apply the chemical according to the manufacturer s instructions.

On stubborn streaks let the chemical dwell longer being careful not to let it dry. I had to use it at full concentration one time. Move down the entire gutter and spray all of the spots with black streaks. Krud kutter 32 oz.