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In this instance, a fibreglass roof kit may be used to complete the repair. The first step would be to sand back the exisiting surface to expose the fibreglass and then clean with acetone. Measure the amount of fibreglass mat you will need.
Cut your new fibreglass mat into strips of an appropriate width for covering over the cracks. Ensure there is an overlap of 50mm either side of the crack.
Apply a wet coat of resin to the surface and bed down the new matting. Ensure the glass is completely wet through with resin (it will go transparent).
Taking a paddle roller, consolidate the glass and resin ensuring that matting is wet through and well consolidated to surface. There should be no trapped air.
Allow to cure. Once cured (min 3 hours), sand back with 80 grit sandpaper to key surface and clean with acetone. Mix topcoat with catalyst and apply. Allow to cure.
