Roof Soft Washing
Olde Naples

The streets around Fifth Avenue South and Third Street South run down to the beach, and salt air reaches every roof in the neighborhood. A salt film can hold dew on the roof surface longer into the morning, and lingering moisture is what algae needs.

The mature trees that make Olde Naples so pleasant to walk add a second layer: shade. Roofs under a canopy dry slowly after rain and drop leaves and debris into valleys and gutters. Shaded slopes tend to streak first and mildew often follows.

Then there is the mix of roofs. Preserved cottages often have metal or older shingle roofs that need a gentle hand; new luxury builds have flat tile, standing-seam metal or clean modern lines where any streak shows. That is why we treat each material by its own rules instead of bringing one high-pressure setting to every house.

Every avenue ends at the beach. One local history guide puts Olde Naples between Golf Drive and 14th Avenue South, west of US-41 and the Gordon River, and notes that every avenue in that stretch dead-ends at the Gulf. That makes this one of the few Naples neighborhoods where salt exposure reaches nearly every block, not just the first row of homes.

Cottages next to mansions. The same guide describes old beach cottages and early 20th-century houses standing beside new mansions, under tall coconut palms and banyan trees. Beachfront lots here are single-family homes rather than condos, and most owners deal with us directly because there is no neighborhood-wide HOA setting a roof schedule.

The oldest house in town. Palm Cottage at 137 12th Avenue South was built in 1895 and is the oldest house in Naples. It is one of the rare buildings made with tabby mortar, was listed on the National Register in 1982 and sits within the Naples Historic District, run today by the Naples Historical Society with Norris Gardens. Living near it is a reminder that many roofs here are older than they look.

Shingle roofs: no pressure, no brushes. The Asphalt Roofing Manufacturers Association tells owners not to use a power washer or any brush or broom on shingles, because high pressure is likely to damage them and scrubbing loosens the granules. It recommends a bleach-and-water solution left on for at least 15 and no more than 20 minutes, then a gentle rinse. Owens Corning’s bulletin gives similar advice and asks for a thorough flush of the roof and nearby plants.

Tile roofs: pressure limits. Eagle Roofing Products, a concrete tile maker, recommends water-only cleaning at no more than 1,200 psi and says higher pressure could change the tile’s pH and discolor it. For heavy soiling it allows only the most dilute concrete-compatible cleaner. Our process stays well below that cap, which matters on the new flat-tile estates where uneven color would be obvious.

Metal roofs on cottages and rebuilds. We have not collected a manufacturer cleaning guide that covers every metal roof in the neighborhood, so we ask owners for the panel maker or installer’s care notes when they have them. Without them, metal gets a mild mix at low pressure and a thorough fresh-water rinse to carry salt off the seams and fasteners.

Palms and banyans overhead. Coconut palms and banyan trees shade a lot of Olde Naples roofs. We clear fronds, seed pods and leaves from valleys and gutters by hand before treatment, so the solution reaches the roof and rainwater has somewhere to drain.

What the dark streaks are. ARMA names Gloeocapsa magma as probably the most common of the algae species that discolor roofs and says it is most widespread in the Gulf States. Owens Corning’s technical bulletin adds that it is airborne and settles and grows on roofs, which explains why a freshly cleaned roof next to a neglected one can darken again.

Plan on repeat visits. ARMA says the effect of cleaning is only temporary and the discoloration may return. Instead of quoting a lifespan for the clean, we photograph each slope, note which ones sit under the heaviest canopy or face the Gulf, and suggest the next visit from what we actually see on your roof.

Downtown condo buildings. Olde Naples also has condo buildings away from the beach. Where a building has a low-slope or flat roof, we work through the association and follow the roof maker’s cleaning guidance; our flat roof cleaning page covers how we approach those.

Pier-side salt. The Naples Pier, about 1,000 feet long and being rebuilt after recent hurricane damage, anchors the west end of 12th Avenue South. Homes on the avenues nearest the pier and beach get the same daily salt as any Gulf-front property, so we finish every job with a full fresh-water rinse.

Busy streets, small lots. Fifth Avenue South, Third Street South and the blocks around Cambier Park draw shoppers, diners and tennis players year round. We keep hoses off sidewalks, park where neighbors can pass, and rinse fences and walks shared with the house next door before we leave.