Danville, CA
Driveway Cleaning in Danville, CA
Danville driveways collect a distinctive mix: oak sap, brown leaf-tannin stains, moss in the shaded seams, and ordinary oil and tire marks. We pre-treat each stain with the right chemistry, then surface-clean the whole slab with high-pressure rotary equipment for an even, edge-to-edge finish.
The tannin problem
When oak leaves sit wet on concrete, they release tannins that soak in and leave brown ghosts long after the leaves are gone. Driveways under Danville's canopy, especially on the older 94526 streets, show it worst every winter. We treat tannin with oxidizing chemistry before pressure work, which lifts the stain rather than just cleaning around it.
Sap, moss, and shade seams
Sap drips harden into black sticky patches that grip more dirt every week. Control joints and shaded edges grow moss that turns slick when wet, a real hazard on sloped driveways in the hills off Camino Tassajara. Sap gets solvent treatment; moss gets killed with detergent so it does not return in a month. Then the surface cleaner evens everything out.
Finish quality you can see from the street
Rotary surface cleaning leaves no wand stripes, and we detail edges and rinse everything clean to the gutter. Walkways, patios, and pool surrounds can join the visit at bundled pricing. On Danville's stone and paver hardscapes we moderate pressure to protect joints and can re-sand pavers where needed.
Questions We Actually Get
Can old tannin stains be fully removed?
Most lift completely with proper chemistry. Very old stains on porous concrete may leave a faint shadow, and we will tell you which to expect before starting.
My driveway is slick in winter. Can you fix that?
Yes. That slickness is algae and moss. We kill and remove it, and an annual wash keeps it from rebuilding.
Do you clean stone and paver driveways?
Yes, with adjusted pressure and technique to protect joint sand and softer stone. Common on Danville custom homes and no problem.
Ready to make it look new again?
Fast scheduling. Photo-documented results. A written quote before any work starts.