Maintenance & buying a home

Should moss be removed from roof tiles?

Short answer: Heavy moss can hold debris and obstruct drainage, but aggressive scraping or pressure washing can damage coverings. The method must suit the roof material and condition.

What this means in practice

Roof condition is better judged from evidence than age alone. External lines and junctions, loft moisture, timber condition, drainage, previous repairs and the paperwork for major work together give a more reliable picture of remaining risk.

What to check next

  • Avoid pressure washing unless specifically appropriate
  • Protect gutters and people below
  • Treat the cause of persistent shade and debris where possible

When should you ask a roofer to inspect it?

Commission a specialist inspection where a general survey flags concern, access prevented a proper view, recent work has no compliance documents or the likely repair could affect the purchase price. Budget separately for work that requires scaffold or specialist access.

Safety first: do not climb onto a roof without suitable access, training and protection. Keep clear of loose coverings, unstable ceilings and water near electrical fittings.

Technical content reviewJ & L Welch Roofing & Paving Services Ltd · Over 20 years of combined roofing experienceReviewed 28 August 2026 · How our answers are produced

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