A Valley roof collects the same dust your stucco does, plus bird droppings, pollen, palm debris, and white mineral streaks from evaporative coolers and sprinkler overspray. None of it should be blasted off. We soft wash roofs at low pressure and let the cleaning solution do the lifting, so tile keeps its color coating and nothing gets cracked along the way.
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Most roof cleaning advice online is about black algae streaks and moss, which is a humid-climate problem. Valley roofs are different. They collect the same fine desert dust as the rest of the house, plus bird droppings, pollen, palm debris, and the white mineral streaks that run down from evaporative coolers and sprinkler overspray.
The instinct is to pressure wash it, and that is how roofs get damaged. Concrete tile has a color coating that a pressure wand strips in stripes, tile that looks fine can crack the moment someone stands on it, and water forced up under the laps turns into a leak you find later. A roof wants low pressure and a solution that does the lifting.
The payoff is bigger than people expect. The roof is a huge share of what you see from the street, so a clean one changes how the whole house reads, especially next to freshly washed walls, where a dusty roofline makes everything below it look unfinished.
Pressure washing a tile roof strips its color coating in stripes and can crack tile. We apply at low pressure, let the solution lift the dirt, and rinse gently, the same method we use on stucco and paint.
Arizona roof tile cracks under foot traffic far more easily than most homeowners expect. We work from ladders and the roof edge wherever we can reach, and only step where the tile can take it.
Cleaning solution dries unevenly on a roof that has been sitting in the Phoenix sun. In the hot months we schedule roofs early in the day, while the surface is still cool enough to clean evenly.
Roof runoff goes through your gutters and into your beds, so we check the downspouts are flowing first, pre-wet and rinse the plants below, and use biodegradable, eco-safe solutions throughout.
No. High pressure strips the color coating off concrete tile, can crack tile, and can drive water up under the laps. We soft wash at low pressure and let the cleaning solution lift the dirt, which is safer for the roof and cleans the texture more evenly.
It depends on the roof: its size, pitch, and material, and how much of it can be reached safely. Quotes are free, and if we spot cracked or slipped tile that needs a roofer before it needs a wash, we will tell you before we start.
As little as possible. Arizona roof tile cracks under foot traffic far more easily than most homeowners expect, so we work from ladders and the roof edge wherever we can reach. We would rather take longer than hand you a roofing bill.
Light mineral streaking usually lifts with treatment. Heavy calcium buildup that has been baking onto the tile for years may lighten rather than disappear completely. We will look at it with you and set expectations before we begin.
Coated flat roofs need different care than tile or shingle. Tell us what kind of roof you have when you request a quote and we will confirm whether it is a fit before anything is scheduled.
Yes. Our solutions are biodegradable and eco-safe, and we pre-wet and rinse the landscaping below the roofline so nothing concentrates in your beds. Pets should stay inside while the crew and hoses are moving around.
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