CAN I APPLY SMARTWATER IF THE ROOF HAS ALREADY BEEN OR IS GOING TO BE TREATED WITH PATTERNATION OIL?

Where possible, we would always recommend that SmartWater is applied directly to the surface of the metal. Applying SmartWater on top of a ‘barrier’ such as Patternation Oil could affect the adherence and allow for easier removal, though it will not directly impede detection. As an alternative, SmartWater could be applied to the untreated underside, so long as there is access.