It depends on the finish you applied. 95% of stains/sealers need to be stripped prior to re-applying another coat. There are only a few products that don’t require this procedure. A light cleaning to etch the surface is all that is necessary. At DeckMaster we only use re-coatable premium stains, which help minimize the maintenance cost in the future. It is important to have a professional evaluation to find out if stripping is necessary. We provide free evaluations and price estimates.