Moss and algae hold water against your roof and quietly shorten its life. We remove them at the root with low-pressure soft washing — never high pressure, never a stripped surface.
Your request is on its way to Nick. We'll be in touch within 24 hours.
Soft wash roof cleaning across the Peninsula — moss, algae and lichen removed at the root, never blasted off.
The Peninsula's shade, coastal fog, and heavy tree canopy create near-perfect conditions for moss, algae, and lichen. On a roof, that growth isn't cosmetic. Moss holds moisture against shingles and tile, works into the seams, and lifts material over time. Lichen roots into the surface itself.
High pressure will strip that growth off — along with the granules that protect asphalt shingles, and often the seal on tile. That's why we soft wash: low pressure, biodegradable detergent, and enough dwell time to kill the growth at the root rather than just blast the surface clean.
Done properly, results last 2–3 years, not one rainy season. We work on composition shingle, concrete and clay tile, slate, and wood shake, and we protect the landscaping underneath before a drop hits the roof.
Common roof calls across the Peninsula: moss removal on shaded north-facing slopes, lichen treatment on tile, pre-solar-install cleaning, and full roof-and-gutter packages after the rainy season.
Hot-water pressure washing that lifts oil, algae, moss, and years of grime from concrete, brick, pavers, exposed aggregate, and stone — without stripping the surface.
Low-pressure, biodegradable-detergent washing for roofs, siding, stucco, and anything delicate. Kills moss, mildew, and algae at the root — 4–6x longer-lasting than blasting.
Hand-cleared gutters, flushed downspouts, and a full inspection for damage or sagging. The cheapest form of water-damage insurance your home will ever get.
Streak-free exterior window washing for residential and light commercial properties. We reach the high ones, detail the frames, and leave glass you can actually see through again.
Soft wash roof cleaning across the Peninsula — moss, algae and lichen removed at the root, never blasted off.
Our roof had moss so thick you couldn't see the tile. Nick's crew treated it, walked us through what they were doing, and it still looks clean two years on.
We keep the back-and-forth to a minimum and the communication clear. Here's what working with us looks like.
Call, text, or fill out our form. We respond within 24 hours with a clear, itemized quote.
For larger jobs, we walk the property with you to confirm scope, materials, and the best method.
On time, in uniform, with professional gear. Landscaping protected, neighbors respected.
We walk the finished job with you. If anything's not right, we fix it then and there.
Most Peninsula roof cleanings run from a few hundred dollars for a small single-story to over a thousand for large or steep estate roofs. Price depends on size, pitch, material, and how heavy the moss is. Every quote is free and delivered within 24 hours.
Yes — soft washing is the manufacturer-recommended method for both. It uses low pressure and biodegradable detergent, so it kills moss and algae at the root without stripping shingle granules or cracking tile.
A properly soft-washed roof typically stays clean 2–3 years on the Peninsula. Heavily shaded roofs under tree canopy may need treatment closer to every 2 years.
High pressure can — which is why we never use it on roofing. Blasting shingles removes the protective granules and can void warranties. We soft wash exclusively on roofs.
Yes. Cedar shake, slate, clay tile, concrete tile, and composition shingle each get a method matched to the material. Cedar and slate estates in Woodside and Hillsborough are a specialty.
Increasingly, yes. California insurers now review aerial imagery, and visible roof moss or debris can trigger non-renewal notices. A cleaning brings the roof back to insurable condition.
Free estimate within 24 hours. No pressure, no upsell, just a straight answer on what it'll cost and when we can start.
Reach Nick directly: (510) 605-0441 · pressurewashbynick@gmail.com