Tiles, slates & materials

Why do concrete roof tiles lose colour?

Short answer: Surface weathering, coatings, pollution and biological growth can change appearance without necessarily making the tile unserviceable. Condition matters more than colour alone.

What this means in practice

The product must suit the roof pitch, exposure, fixing zone, headlap, supporting structure and appearance of the building. Substituting a similar-looking tile or slate without checking the manufacturer’s fixing specification can create wind-uplift, weight and weathering problems.

What to check next

  • Check strength and water-shedding performance
  • Do not replace solely for fading unless appearance matters
  • Avoid damaging cleaning methods

When should you ask a roofer to inspect it?

Ask for the exact manufacturer and product in the quotation, not a generic description such as ‘grey tile’. A survey is important before changing covering type, reusing battens or mixing old and new materials on an exposed North East roof.

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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