Pros: Will extend the life of the roof, by reducing heat transfer into the building Decrease thermal shock (thermal expansion and contraction of the roof membrane) Help to mitigate leaks. Reflective coatings also can reduce heat energy costs and improve the aesthetics of the roof. A reflective roof coating will reduce the heat load on the roofing assembly. Cons: Do not typically adhere well to Ballasted and gravel surface roofs – Solution Need a special treatment to allow adhesion Smell – Solution use low or No VOC coating Ponding Water – Solution not all coating withstand this, make sure your contractor specifies one that withstand this condition. New Roof Warranty – Solution have the roof coating done at the same time as the new roof so it will be all inclusive Roof must be clean – Solution have your contractor wash your roof, paying special attention to any seams and let it thoroughly dry before coating