Rinse it off and let those gutters shine.
Electrostatic bonding gutters.
Once the bond is broken only then can you easily clean gutters and the pesky tiger stripes that occur.
The black streaks are a result of electrostatic bonding of tar asphalt from roofing material and other debris to aluminum metal material.
You can adjust the formula s strength by diluting it either half and half with water or one part gutter zap to 3 parts water.
This is due to a phenomenon called electrostatic bonding.
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.
Use gutter zap on your new applicator to apply it to the exteriors of gutters.
The dark marks on gutters are caused by the electrostatic bonding of dirt grime and acid rain runoff.
Gutters are metal and as such have an electrostatic bond which attracts atmospheric dirt.
That s where the problems start and they make themselves known in the form of black streaks.
The contaminants will attach to the gutter oxidation in another process called electrostatic bonding and over time will cause those unwanted black streaks.
When cleaning gutters it is important to break the bond between the dirt and gutters.
The black stripes also known as tiger stripes that appear on the outer surface of gutters are the results of water run off which causes particles from algae roofing materials or the air to cling to the surface by the process of electrostatic bonding.
Your gutters are in a vulnerable area.