After putting it off – er, saving up, for some years, we’ve now begun to gut and rebuild our kitchen. The floor is first. The goal is to lay 6”x24” ceramic tiles over the entire kitchen, including where the new cabinets and dishwasher will be. I have removed the cruddy, shoddily installed sheet vinyl and the luan level underneath. We now have avocado green 12” square tiles, VCT I think, which was directly attached to the plywood subfloor. All is level, except for a small section near the outside door.
Normally you would not put thinset and backer board directly over such tiles. However, as in so many other areas, there is some difference of opinion. The pendulum is now swinging toward more acceptance of this practice. But I have removed some tiles by the outside door, attempting to reduce the rise there, and exposed black adhesive. Thinset apparently will not stick to that, and removal of such adhesive requires a pact with the devil. In any event, I believe if I cover the entire floor with ½” plywood, I can reduce any adhesion problems to both tile and black adhesive. By the back door I can put thinner wood or CBU (& maybe a little thinset), to make it as level as possible before laying down thinset and backer board.
Anyone here done this kind of work? Any comments or suggestions? Yes, I’m asking on a couple of tile forums also, but responses there are few and slow. I thought I'd give it a shot here at "home" also.
Normally you would not put thinset and backer board directly over such tiles. However, as in so many other areas, there is some difference of opinion. The pendulum is now swinging toward more acceptance of this practice. But I have removed some tiles by the outside door, attempting to reduce the rise there, and exposed black adhesive. Thinset apparently will not stick to that, and removal of such adhesive requires a pact with the devil. In any event, I believe if I cover the entire floor with ½” plywood, I can reduce any adhesion problems to both tile and black adhesive. By the back door I can put thinner wood or CBU (& maybe a little thinset), to make it as level as possible before laying down thinset and backer board.
Anyone here done this kind of work? Any comments or suggestions? Yes, I’m asking on a couple of tile forums also, but responses there are few and slow. I thought I'd give it a shot here at "home" also.