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Profiled metal roofing dented or damaged

Profiled metal roofing buckling or twisting

  • Inadequate allowance for thermal movement at fixings – this occurs more commonly with dark coloured and aluminium roofs

    How to repair

Profiled metal roofing tearing at fixing points

  • The use of rivets instead of screws does not allow thermal movement to occur

    How to repair

  • Fixing holes are too small to allow sufficient thermal movement

    How to repair

Surface pitting of profiled metal aluminium roofing

  • The environment is corrosive (near the coast or industrial areas)

    How to repair

  • Surfaces (including the exposed underside of the roof at the eaves) are not effectively washed by rain. Rain washing tends to be less effective on roofs with less than 15 degrees slope.

    How to repair

  • View all repairs

Profiled metal roofing – staining

  • Run-off from lead flashings

    How to repair

  • Soot or particulate emissions from nearby chimneys or flues

    How to repair

  • View all repairs

Profiled metal roofing – scratches

Profiled metal roofing – swarf staining

  • Swarf (residual fragments of steel from cutting, drilling or grinding roofing sheets) have been left on the roofing or in gutters

    How to repair

Profiled metal roofing – lead-head nails damaged or missing

  • The lead heads were damaged during roofing installation

    How to repair

  • Nails have worked loose over time as a result of movement in the roof

    How to repair

Galvanised steel profiled metal roofing – white rust

  • The zinc coating has corroded when water is trapped between sheets at laps and joints. This may occur during roofing installation or during storage before installation

    How to repair

  • Insufficient rain washing. Rain washing tends to be less effective on roofs with less than 15 degrees slope

    How to repair