Cleaners such as KRUD KUTTER, GC32 Gutter Cleaner, or Gutter Zap Cleaner for Your Gutters can be used to clean heavily soiled areas. You'll also need a soft cloth, sponge and soft bristle brush for hard-to-clean areas. Tiger stripes can be cleaned with the right cleaners, such as Gutter Zap Cleaner and KRUD KUTTER. These cleaners have different ways of applying and using them to clean, although general procedures are divided between those that are simply applied and then rinsed and those that require scrubbing.
When cleaning tiger stripes from gutters, use a non-abrasive household cleaning detergent. There are also numerous products available at home improvement stores and hardware stores that are specifically designed to clean gutters. Some of the brands include Gutter Magic No. You don't have to scrub the gutters too hard.
The chemist should cut most of the crap for you. Often referred to as “tiger stripes” or “zebra stripes” by industry insiders, those ugly black spots on gutters are the result of a chemical reaction between the asphalt in the roof shingles and the anodized aluminum in the gutters. However, the gutter manufacturer anodizes aluminum to make the paint stick, and using too strong a chemical can remove paint from the gutter. Be careful if the protective seal of your gutter is missing; in that case, you may not be able to clean the tiger stripes and you may have the option of replacing the gutters completely.
If the results are not satisfactory, add more chemicals and rub until you have a clean, shiny channel. In this case, if the gutters are gray or dirty, you may not be able to clean them back to their original white and you may be forced to replace them to regain their original shine. Metal surfaces with baked paint require cleaning from time to time, and their gutters are no exception. Unfortunately, even if gutters are cleaned, black stripes are likely to return within 1 to 3 years.
Unless you have a 1-story home, you'll need to climb to get to the gutters on the second floor, even with extended cleaning tools. Just be sure to wear gloves, eye protection, and appropriate clothing when preparing this solution and make sure to rinse the gutters thoroughly after cleaning them. If you live in an area with a lot of debris in the air, birds, or nesting trees, you should clean gutters more often. If the results are not satisfactory, add more chemical and then rub it into a clean, shiny gutter.
By the time you see the streaks, these deposits are already built up enough to withstand anything other than a strong gutter cleaning solution. However, seamless aluminum gutters can also be affected by “tiger stripes”, an unsightly build up of dirt and contamination that washes over the gutters over and over again until they have vertical stripes of dirt running through them. We recommend specially designed products like Gutter Zap and Gutter Butter, which are made to break that bond and eliminate those streaks. Cleaning slightly harder tiger stripesAdd a household cleaner or dishwashing detergent to the water and scrub the gutters.