Moss is the most common reason homeowners call us. It looks bad, it's slippery, and it physically wedges joints apart over time. Here's what professional moss removal actually costs in 2026, and how to decide between DIY and a pro job.
Driveway and patio moss removal
Whales charges from £3/m² for driveway and patio moss removal — which includes pre-treatment with a biocide that kills the spores, full rotary pressure-wash, and rinse. A typical 25m² single driveway is £80–£150. A 50m² double driveway is £150–£300. Heavy infestation, oil staining or a request to re-sand the joints can push the figure up.
Roof moss removal
Roof moss is a different beast. We use low-pressure soft-wash with PURECHLOR 15 — not a high-pressure jet, which is what damages tiles. Pricing starts at £7/m². A standard 80m² semi-detached roof typically lands between £550 and £850 depending on access and pitch.
When DIY makes sense
- Light surface moss on a small patio (under 10m²) — a stiff brush and a £15 bottle of patio cleaner will probably do it.
- You have access to a decent pressure washer and aren't worried about technique on the surface (concrete, well-laid block).
- Cost matters more than finish quality.
When to call a pro
- Roof moss — never DIY a roof. Falls and tile damage are both common.
- Block paving where you want the joints re-sanded as part of the job.
- Heavy black-spot or lichen alongside the moss.
- Natural stone (Indian sandstone, limestone) where the wrong pressure will scar the slabs.
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