Black Streaks On Rain Gutters

Rain carries them down the sides of the gutters where they stain the aluminum.

Black streaks on rain gutters. These streaks are caused by oxidation of the pollutants that settle on the top of the gutters. When it rains the water will drip down the front of the gutters collecting air pollutants debris and other contaminants. The contaminants will attach to the gutter oxidation in another process calledelectrostatic bondingand over time will cause those unwanted black streaks. These streaks can make your gutters and fascias look worn and old.

The black streaks are a result of electrostatic bonding of tar asphalt from roofing material and other debris to aluminum metal material. It is a combination of dirt from your roof being washed off and asphalt from your roofing as it breaks down over time decomposing organic. Instead of replacing the gutters there is a quick and easy alternative to getting the streaks out of your gutters. Black streaks are often found on gutters and fascias just underneath the gutters.

You can try a variety of products but success depends on your geographic area. 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. All gutters are painted metal and over time water run off will start taking away the top layer of paint where the streaks are. The black streaks on your gutters are caused when dirty water runs off of your gutters.