We rarely wash a roof, because washing is what damages it. Pressure strips the protective granules off shingles, and on soft roofing the damage is worse and not repairable by cleaning it again later. Driveways, patios and siding are a different story — those we do clean under pressure. So a roof gets two different treatments depending on what is growing on it. Heavy moss — the thick raised growth that has built up in the shade — comes off mechanically, with a brush. The flat lichen patches are a different problem: they hold on at the root, and scrubbing them just removes what you can see. For those the whole roof is sprayed with a treatment that kills the growth at the root, and over the next two or three weeks the lichen dies and blows off in the wind. That is why this service has a second visit built into it rather than ending when the crew packs up: we come back in two to three weeks to look at the result. What it costs depends on the size of the house, the pitch of the roof — which matters a great deal — the height of the building, and how close your neighbours are. When houses sit close together, some of what comes off the roof lands on the neighbour's property, and we clean that up too. A roof visit starts at $400.
Roof Cleaning & Moss Removal
This one is priced after we see the job — tell us what you need and we will come back with a number.
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Frequently asked questions
Why do you rarely wash a roof?
Because washing is what damages it. Pressure strips the protective granules off shingles, and on soft roofing the damage is worse — and not repairable by cleaning it again later.
How do you remove moss and lichen instead?
Heavy moss, the thick raised growth that builds up in the shade, comes off mechanically with a brush. Flat lichen is a different problem: it holds on at the root, so scrubbing removes only what you can see. For that the whole roof is sprayed with a treatment that kills the growth at the root.
Why is there a second visit?
Because the lichen dies over the following two or three weeks and blows off in the wind. We come back to look at the result — that visit is part of the service, not an extra.
What decides the price?
The size of the house, the pitch of the roof — which matters a great deal — the height of the building, and how close your neighbours are.
What happens to what comes off the roof?
When houses sit close together, some of it lands on the neighbour’s property. We clean that up too.
Where does a roof visit start?
At $400.
Where we offer Roof Cleaning & Moss Removal
- Carmichael
- Fair Oaks
- Orangevale
- North Highlands
- Rocklin
- Sacramento
- Roseville
- Elk Grove
- Folsom
- Citrus Heights
- Rancho Cordova
- Antelope
- West Sacramento
- Davis
- El Dorado Hills
- Granite Bay
- Auburn
- Placerville
- Galt
- Lincoln
- Loomis
- Rio Linda
- Foothill Farms
- Rosemont
- Vineyard
- Florin
- Woodland
- Winters
- Cameron Park
- Shingle Springs
- Newcastle
- Penryn
- Wilton
- Rancho Murieta
- Elverta
- Colfax
- Pollock Pines
- Arden-Arcade
- Coloma
- Georgetown
- Rescue
- Walnut Grove
- Courtland
- Herald
- Clarksburg
- Meadow Vista
- Sheridan
- El Dorado
- Fair Play
- Esparto
- Dunnigan
- Knights Landing
- Freeport
- Applegate
- Weimar
- Gold Run
- Garden Valley
- Cool