How to Repair a Leaky Roof

Small holes in a flat roof can be patched with a specially made primer and patching system. The technique will vary slightly according to manufacturer; that shown here is typical. This repair requires dry conditions.
Materials and Tools:
primer and patching system
flat-roof roller
Allow primer to dry if instructed to. Cut some self-adhesive patching material to cover the hole and overlap onto the sound roof (Image 2).
Apply the patch to the primed area, and smooth it by hand. Then smooth it with a flat-roof roller, ensuring a good seal (Image 3).