Plan the request

What to know about roof cleaning and moss removal

Cleaning methods must suit the roof material and condition. Aggressive pressure can damage some coverings, so ask how growth will be removed, how gutters and surrounding areas will be protected and whether treatments are proposed.

Useful job details

Information to include

  • The roof covering, approximate age and current condition.
  • The extent of moss, lichen or blocked rainwater goods.
  • Nearby conservatories, solar panels, vehicles or gardens needing protection.
  • The proposed access and debris collection arrangements.
Before appointing a contractor

Questions to ask

  • What inspection has been completed and what is included in the written scope?
  • Which materials, access equipment and waste removal are included?
  • What deposit and staged payments are proposed?
  • Who provides any workmanship or manufacturer warranty, and on what terms?
Common questions

Roof cleaning and moss removal FAQs

Should roof tiles be pressure washed?

The answer depends on the material, condition and method. High pressure can damage some surfaces or force water into the roof, so ask the provider to justify the method and follow relevant manufacturer guidance.

Will moss treatment stop all regrowth?

No treatment can promise permanent prevention. Aspect, shade and moisture affect regrowth. Ask what product is proposed, its safety controls and the realistic maintenance interval.

Ready to explain the job?

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