Bathroom renovations often include new flooring, which can create a problem when setting the toilet back on the existing closet flange.  It is critical that the sealing surface of an existing flange is above finished floor height to ensure a proper seal.  It can be costly to rework existing plumbing to restore the sealing surface, so a flange extension product like Set-Rite® can correct the issue in minutes. Use of Set-Rite® products can correct flange elevation issues ranging from 1/4" to 1-5/8".