The present invention provides a method for providing a protective coating to a roof surface. The method includes the steps of: providing a spraying means and a liquid protective coating, the spraying means being configured to apply the protective coating; operating the spraying means such that the protective coating is applied to the roof surface beginning at a first row; applying the protective coating by performing the following steps; spraying horizontally at the first row; covering the roof surface with the protective coating generally uniformly; completing the first row and continuing to a second row that is below the first row; repeating the applying step such that the second row becomes the first row until the roofing surface is covered; and curing the protective coating for a predetermined period of time.