That s where the problems start and they make themselves known in the form of black streaks.
Electrostatic bonding gutters.
When cleaning gutters it is important to break the bond between the dirt and gutters.
This is due to a phenomenon called electrostatic bonding.
The black streaks are a result of electrostatic bonding of tar asphalt from roofing material and other debris to aluminum metal material.
Your gutters are in a vulnerable area.
Once the bond is broken only then can you easily clean gutters and the pesky tiger stripes that occur.
Rinse it off and let those gutters shine.
Gutters are metal and as such have an electrostatic bond which attracts atmospheric dirt.
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.
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.
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.
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.
The dark marks on gutters are caused by the electrostatic bonding of dirt grime and acid rain runoff.