I usually use it around 10 1 and have no problems getting the black streaks off.
Clean aluminum gutters black streaks.
It will make the streaks disappear.
Specially formulated to remove tough soils from exterior metal vinyl plastic and aluminum surfaces.
Krud kutter 32 oz.
The gutters were over 30 years old with heavy oxidation and were never cleaned.
These streaks are not a stain it s just one form of material bonded to another.
Black streaks on face of white rain gutters the streaks are normal dirt carried from the asphalt shingles on the roof.
Gutter cleaner removes black streaks dirt mildew stains and more.
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.
Ready to use formula makes cleaning gutters easy with a simple spray on wipe off application.
The contaminants will attach to the gutter oxidation in another process calledelectrostatic bondingand over time will cause those unwanted black streaks.
Assess your gutters carefully before deciding on the cleaning agent.
Application method spray on after diluting pump up sprayer or spray bottle allow to work for up to 5 minutes keep wet by misting scrub with a brush or rag rinse and repeat if necessary.
Ideal for exterior metal vinyl plastic and aluminum surfaces.
The black streaks are a result of electrostatic bonding of tar asphalt from roofing material and other debris to aluminum metal material.
Use warm water for rinsing off the dirt.
I had to use it at full concentration one time.
Wash and rinse as you go because if dirt and soap dry off together they might stick to the surface making it even harder to clean off.
Rain carries them down the sides of the gutters where they stain the aluminum.
These streaks are caused by oxidation of the pollutants that settle on the top of the gutters.
If the dirt is super bad use stronger agents with tsp pf.
Go to our shopping cart for this product and other gutter cleaning products.
Wet and dry vac to clean gutters.
You can cut the f 13 to a 20 1 ratio.
Places like walmart or lowes sells a product called gutter zap.
The streaks that are left on the gutters is not dirt.