Ditra Mat Over Concrete

The type of thin set mortar used to install ditra depends on the substrate material.

Ditra mat over concrete.

Again i think this is a bad idea. If it damp ditra would be my choice. Ditra over concrete floors. Schluter says this is ok.

To set ditra over concrete or gypsum schluter systems recommends an unmodified thin set mortar meeting the requirements of ansi a118 1. Ditra is 1 8 3 mm thick which minimizes tile assembly thickness and reduces transitions to lower surface coverings e g carpet engineered wood and vinyl. Make sure the cavities waffles are filled correctly. To start with choose a quality thin set mortar for sticking the ditra to the subfloor substrate.

Install it over an approved substrate and with the correct type of thinset mortar. Select ditra or ditra xl underlayment depending on the. Purchase a suitable trowel for the thin set mortar between the substrate and the ditra membrane. The combination of these four essential functions allows for the successful installation of tile over a wide range of substrates including plywood osb concrete gypsum heated floors etc.

If it s newer and has cracks i wouldn t use ditra. Ditra heat tb has additional insulation for going over concrete floors. Don t install tile the same day over the ditra heat mat. Depends on the condition of the slab and if it has any issues.

While ditra is my preferred membrane for floor tile installation as well as countertops and tub decks it absolutely needs to be installed correctly. I would prefer a crack isolation mat like noble ts.