What evidence should support a recommendation for a new roof?
The short answer
Evidence of a pattern, not a single defect. Multiple failures in different locations, fixings that break rather than withdraw, underlay that tears when disturbed, battens in poor condition, and a clear explanation of why repair would not hold. Each of those should be photographed and described, not simply asserted.
What could this mean?
One failed slate justifies a repair. A pattern of failures across multiple slopes, supported by what was found beneath the covering, is what justifies renewal.
What this evidence cannot tell you
Some uncertainty always remains until coverings are stripped. A good recommendation acknowledges that rather than hiding it.
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What should you do next?
Ask for the evidence in writing with the quotation, so you can consider it away from the conversation.
Reviewed by Aaron, Owner, Elite Roofing Services Cumbria Ltd — last reviewed .
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