ONDULINE OVERSHEETING Preparation

A thorough inspection of the existing roof structure should be undertaken, any deterioration should be rectified and the structure checked as to suitability for oversheeting procedures.

A review of the original roof design should be made to check that sufficient ventilation and insulation is provided, and if necessary, alterations incorporated in the Onduline oversheet system refurbishment.  When oversheeting fibre cement roofs, it is advisable to apply a coat of PVA adhesive to the underside of the fibre cement sheets prior to fixing to consolidate the surface.

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