Practical indicators that a roof should be inspected before leakage causes wider damage. The guidance below is general information and does not replace a site inspection, manufacturer requirements or project-specific engineering advice.
1. Blistering, bubbling or peeling coatings
This condition should be assessed in context. The visible symptom may be located away from the real source, and repair should not proceed until the substrate, interfaces and operating conditions are understood.
2. Cracks around upstands, drains and penetrations
This condition should be assessed in context. The visible symptom may be located away from the real source, and repair should not proceed until the substrate, interfaces and operating conditions are understood.
3. Standing water that remains after rainfall or cleaning
This condition should be assessed in context. The visible symptom may be located away from the real source, and repair should not proceed until the substrate, interfaces and operating conditions are understood.
4. Damp marks, odour or paint deterioration below the roof
This condition should be assessed in context. The visible symptom may be located away from the real source, and repair should not proceed until the substrate, interfaces and operating conditions are understood.
5. Repeated local repairs that fail in the same area
This condition should be assessed in context. The visible symptom may be located away from the real source, and repair should not proceed until the substrate, interfaces and operating conditions are understood.
What to Do Next
Record when and where the issue appears, take photographs, avoid covering the evidence with another incompatible coating, and arrange a technical inspection. Early diagnosis normally provides more repair options and reduces secondary damage.