Teesside roof cleaning FAQs
The questions Teesside homeowners actually ask about roof cleaning, answered honestly: what it costs, which methods are safe, how long results last, and how to keep moss off for good.
Straight answers on roof cleaning across Teesside. Anything not covered here, ask us directly.
Costs & quotes
How much does roof cleaning cost in Teesside?
Moss removal £400 to £900 on a typical semi; soft washing £500 to £1,200; biocide-only £150 to £400; sealing £900 to £2,000; conservatory roofs £120 to £300; gutters £60 to £120.
Why is one quote £250 and another £700?
Almost always method: the cheap one is a pressure washer with no biocide. It regrows in 12 to 18 months and shortens tile life. Ask each quote to name its method.
Is the quote really free?
Yes. The roof is looked at properly, the quote is written and itemised, and you decide in your own time. No charge and no pressure.
Should sealing be in the same quote as cleaning?
As a separate visible line, yes, and only after a full clean on sound tiles. Coating a dirty or damaged roof is the trade's classic oversell.
Methods & safety
Is pressure washing safe for my roof?
No, essentially never on roofs: it strips tile surfaces, forces water under laps and can void warranties. Hand scraping, soft washing and steam are the safe toolkit.
What is soft washing?
Low-pressure application of cleaning solutions that kill moss, algae and lichen at the root. Garden-hose pressure, tile surface untouched, results lasting two to five years.
Are the chemicals safe for my garden and pets?
Applied properly, yes: plants pre-wetted and rinsed, run-off managed, product and dilution named in the quote. Keep pets off treated areas until dry.
Will walking on my roof damage it?
Done properly, no: roof ladders spread the load and footwork is trained. Conservatory roofs are never walked on at all, poles only.
Results & prevention
How long does a roof clean last?
With biocide, two to four years typically; two to three under trees or on the coast. Without biocide, expect regrowth within 12 to 18 months.
How do I keep moss off permanently?
Biocide retreatment every two to four years (£150 to £400) keeps a clean roof permanently clear, cheaper per year than periodic deep cleans.
Does moss actually damage the roof?
Yes: it holds moisture against tiles (frost spalling), lifts laps as it grows, and blocks gutters, which then cause internal damp.
Do you cover my area?
The whole Teesside conurbation: Middlesbrough, Stockton, Billingham, Redcar, Saltburn, Guisborough, Hartlepool, Yarm, Eaglescliffe, Ingleby Barwick and Thornaby.