Thinset Over Painted Floor

Mortar cannot be installed directly over painted concrete itself.

Thinset over painted floor. It is applied to the substrate with a notched trowel. Installing tile over painted concrete adds a few extra steps to your tiling job. Only use epoxy and latex thin set products that state they can be used for bonding tile to paint. All paint will need to be removed before you begin installing the tile.

Apply a coat of sanding sealer or tile prep sealer to the floor with a paint roller. Thinset tile mortar has a smooth slippery consistency similar to mud. Paint used on concrete will not bond with the tile adhesive. Thinset mortar is your default tile mortar for most indoor and outdoor applications.

The house was built in the late fifties and the slab floor has been painted at least once. A latex based thin set adhesive should be used over the latex based paint. Whether you have cracks chips or just a stained concrete slab thinset helps cover the old surface and create a new problem free area. The thin mix is laid over.

This surface is called a scratch coat. A scratch coat will give the mortar something to hold on to instead of the layer of paint over concrete. The painted surface has to be cleaned properly to ensure an adequate bond. First a surface more textured and solid must be applied over the painted concrete.

This will seal the wood and create a matte finish that will adhere to the tile well and help to stabilize the. Thinset is a mortar that is made of portland cement silica sand and moisture retaining agents.