If wall and ceiling surfaces are to overhauled an to receive a new coat after several years, the question arises as to whether priming is necessary. We recommend the following procedure:
If the new coat is to be applied in approximately the same shade as the existing coating, you do not need a primer.
However, if the new color tone differs greatly from the existing paint, we recommend priming:
For Farrow & Ball paints, the Wall & Ceiling Primer & Undercoat in the matching shade.
For Little Greene colors, Wall Sealer Primer.
In this case, the primers provide the necessary opacity and the corresponding color brilliance of the topcoat.