Thanks Movement Joints DITRA-HEAT and DITRA-HEAT-TB do not eliminate the need for movement joints, including perimeter joints, within the tiled surface. Schluter®-DITRA Installation over Concrete. $3,000 and I am not sure if we really need it on a concrete slab. The substrate must be free of bond inhibiting components, be load bearing and even. This cement can be used for any type of sub-floor installation… Any unevenness in the substrate must be levelled prior to the application of Schlüter®-DITRA 25. DITRA is the right choice when installing flooring over concrete or other material that requires a moisture barrier to prevent damage to flooring. The Ditra will cost approx. We also have an in-floor glycol heating system. For installation of tile, the tile ends at each control joint and the gap if … To keep things as simple as possible, you can use Schluter-All set cement. The floor is a 4" poured concrete slab on grade with moisture barrier and 2" SM insulation under the concrete. The short answer is that you do not span control/expansion joints with the tile. Wood Substrate - Thin slab (lightweight or gypsum concrete) Concrete Substrate - Structural concrete slab WATERPROOFING 13 Floors, Interior - Ceramic or Stone Tile ACCESS FLOOR PANELS 12 Floors, Interior - Ceramic or Porcelain Tile INSTALLATION 18 Schluter®-DITRA installation instructions https://www.tipshandyman.com/can-you-install-ditra-over-cement-board How to install Schluter®-DITRA Uncoupling Membrane over Raised Access Floor Panels. 04:22. Are we taking a big risk by installing the slate tile without Ditra? to meet up with thick hard woods. 13:38. Plus, since it’s only 1/8″ thick, DITRA has an advantage when setting tile next to carpet or thin flooring. One says use DITRA to avoid cracking tile if the slab moves (hard for me to imagine that happening). Installation. prior to installing DITRA-HEAT and DITRA-HEAT-TB. Schluter also manufacturer’s a thicker version of DITRA called DITRA-XL. Control joints are there because it's not a question of if the slab will crack but rather when the slab cracks it [hopefully] happens at the joint. We chose the sheets since it was a small room, and it was also easier to cut them at the toilet and floor drains. Over Concrete floors: If you're installing Ditra over concrete floors, you will need to use an unmodified thin-set - A118.1 will be labelled on the bag. DITRA Installation Tips. Scott McGillivray on Schluter®-DITRA Uncoupling Membrane. I am caught between two tile contractor experts, regarding installation of DITRA on a sunroom’s concrete slab floor with in-floor heating (in the slab, not on top). Schluter Ditra and Redgard Uncoupling Mat are two popular brands of tiling membranes that lessen the chance of concrete events becoming tile events. The type of bonding adhesive used to apply Schlüter®-DITRA 25 depends on the type of substrate. 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