Guarantees & compliance

Is a 20-year roofing guarantee automatically better?

Short answer: No. Duration only matters when the issuing company, covered system, exclusions and claims process are credible. J&L Welch provides 20-year guarantees for Resitrix SKW flat roofs and 10-year guarantees for felt flat roofs; the written scope still controls the cover.

What this means in practice

A useful handover proves what was installed, who is responsible and how compliance was achieved. Product warranties, workmanship guarantees, insurance-backed cover and Building Regulations certificates are different documents and should not be presented as interchangeable.

What to check next

  • Check who stands behind the promise
  • Read transfer and maintenance terms
  • Do not confuse a product warranty with workmanship cover

When should you ask a roofer to inspect it?

Confirm the compliance and guarantee route before work starts, not after the scaffold comes down. At completion, check the property address, scope, dates, exclusions, transfer rules and issuing organisation, then retain the documents with the invoice and photographs.

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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