Deterioration of sheet membrane roofing patching
Listed under: membranes, sheet membranes, Roof, cladding, roof cladding, sheet membrane roofing
Cause
Incompatible patching material was used; for example, rubber membrane used to patch bitumen-impregnated membrane
Repair
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problems with roofing should be attended to without delay to avoid the risk of rainwater entering the building
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when damage is found to a roof membrane or repairs to a roof membrane, contact the manufacturer, supplier or installer of the original membrane for their advice
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membrane manufacturers and suppliers typically train and license applicators in the use of their membranes. A warranty may only apply where application or repair is carried out by someone licensed by the supplier. Suppliers typically provide materials for the repair of their membranes
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roofs still under warranty should be repaired by the contractor who carried out the original membrane application or by another applicator approved by the membrane supplier
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installation and/or repair of membrane roofs is typically not a DIY job. If repairs are made that are incompatible with the original membrane, the warranty for the original membrane may be void
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the fact that the membrane has been patched may indicate that it is old or in poor condition. Depending on the circumstances, a better long-term option may be to replace the whole membrane rather than continue patching it
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check the condition of membrane roofs at least once a year to ensure there is no debris on the roof, no damage and no breakdown of the membrane surface