Your gutters can be working perfectly and still look terrible. Those black vertical streaks running down the outside of white gutters — called tiger striping — show up on almost every Orlando home within a few years. Regular washing does not touch them. A garden hose does nothing. But the right chemical treatment dissolves them, and the gutters come out looking close to new.
Gutter brightening is the exterior whitening of your gutters — not cleaning the inside (that is gutter cleaning, a different service), but restoring the outside face that everyone sees from the street. It is one of the highest-impact, lowest-cost exterior improvements you can make, and it pairs naturally with a house wash. Here is how it works and why those stripes exist in the first place.
What Tiger Striping Is and Why It Happens
Tiger striping is the set of dark vertical streaks on the outer face of gutters. It forms when rainwater overflows the gutter lip or wicks up behind it, carrying dirt, roof granule dust, and organic matter down the gutter's face. Then the Florida sun bakes it on. Over months and years, the streaks bond to the gutter's finish through a process similar to electrostatic bonding — the grime essentially fuses with the painted aluminum surface.
That bonding is why pressure washing alone does not remove tiger striping. Blasting the streaks with high pressure either does nothing or damages the gutter's finish before the stains budge. The stains have to be dissolved chemically, not forced off mechanically. Once you understand that, the fix is straightforward.
How Gutter Brightening Works
The treatment is a detergent mix — typically sodium hypochlorite with a degreasing agent — applied directly to the gutter's outer face. The solution needs dwell time, usually 5 to 10 minutes, to break the bond between the striping and the finish. On heavy striping, the solution goes on with a soft brush or mitt that gently agitates the surface — think hand-washing, not pressure washing.
Then comes a low-pressure rinse, just enough to wash the dissolved grime away. The gutter's baked-on enamel finish stays intact because nothing abrasive touched it. White gutters show the most dramatic change, but the treatment works on any gutter color — tan, brown, and bronze gutters get the same streaking, it is just less visible until it is gone.
Seamless aluminum gutters, the most common type in Orlando, respond best. Older painted gutters with failing paint are a different story — if the paint is already peeling, brightening can reveal the failing areas. We flag that during the inspection so there are no surprises.
Brightening vs. Gutter Cleaning: Know the Difference
These are two different services that solve two different problems. Gutter cleaning clears the inside — leaves, oak tassels, shingle grit, and the sludge that clogs downspouts. Gutter brightening restores the outside face. A home can need one, the other, or both.
In Orlando, the insides clog fast: live oaks shed leaves and tassels nearly year-round, and a single summer storm can pack a gutter with debris. If water is spilling over the sides during rain, you likely need the insides cleared — and that overflow is probably what caused the tiger striping in the first place. We offer brightening as a standalone service, and it is most commonly booked together with a "house soft wash" or "roof soft wash", since the ladders and equipment are already on site.
Downspouts, Fascia, and Soffits
While we are up there, the related trim gets attention too. Downspouts develop the same striping as gutters and get the same treatment. The fascia boards behind the gutters — the wood or wrapped boards the gutters hang from — often have mildew and drip stains that a soft wash clears. Soffits, the undersides of the eaves, collect mildew in their vents and corners, and the low-pressure rinse from the house wash handles those.
Doing the whole eave line at once — gutters, downspouts, fascia, soffits — is what gives a home that crisp, finished look from the street. Piecemeal, each part looks fine; together, the difference is dramatic. When you "request your quote", tell us if you want the full eave line or just the gutters, and we will price it accordingly.
What Affects the Price
Gutter brightening is usually priced by the linear foot of gutter, with the total driven by how much gutter you have and how bad the striping is. A single-story ranch with light streaking is quick. A two-story with heavy striping on every run, plus downspouts and fascia, takes longer — ladder work on the second story adds time to every section.
The biggest price factor is bundling. Brightening booked alone means a dedicated trip with ladders and setup; booked with a house wash or roof wash, the crew is already set up and the add-on costs noticeably less. As a rough range, standalone gutter brightening for a typical Orlando home often falls in the low hundreds of dollars, with larger or two-story homes higher. These are planning ranges, not fixed prices. Our "Orlando cost guide" has more detail across all services.
Our Gutter Brightening Process
Start with a "free quote request" — tell us your home's stories and whether you want gutters only or the full eave line. On the day, we inspect the gutters for failing paint or damage, confirm the written price, and set ladders with stabilizers that protect the gutters themselves.
The treatment goes on section by section with proper dwell time, heavy areas get a soft agitation, and everything gets a low-pressure rinse. We check each run from the ground to make sure the striping is gone and the finish is even, then walk the house with you. Most gutter brightening jobs take one to two hours standalone, or add under an hour to a house wash.
Frequently Asked Questions
What causes the black stripes on my gutters?
Tiger striping — rainwater carrying dirt and organic matter down the gutter's face, baked on by the sun until it bonds with the finish. It happens on nearly every home in Orlando within a few years, and it is why the stripes do not wash off with a hose.
Will pressure washing remove tiger striping?
Usually not — and trying with high pressure risks damaging the gutter's finish. The striping is chemically bonded to the surface, so it has to be dissolved with the right detergent, not blasted off. That is the whole difference between brightening and just spraying the gutters.
Is this the same as gutter cleaning?
No. Gutter cleaning clears debris from the inside; brightening restores the outside face. If water spills over your gutters in the rain, you probably need the insides cleared too — and that overflow is likely what caused the striping.
Will brightening damage my gutters' paint?
No — the treatment is designed for the baked-enamel finish on aluminum gutters and does not harm sound paint. If your gutters' paint is already peeling or failing, we will point that out before starting, since brightening cannot fix failing paint.
How long do the results last?
Typically 2 to 4 years. Striping rebuilds gradually as rain keeps carrying grime down the gutter face. Keeping the gutter interiors clear so water does not overflow the lip slows it down — which is another reason to pair brightening with regular gutter maintenance.
Can you do just the front of the house?
Yes. If only the street-facing gutters bother you, we can brighten just those runs. Most homeowners end up doing the whole house once they see the difference, but there is no requirement — you choose the scope when you request your quote.