ditra underlayment
Ditra should be installed on plywood subfloors using modified thinset mortar, not unmodified. The difference between the two is that the unmodified is a mixture of Portland cement, sand and water retention agents. Modified thinset mortar adds latex polymers to increase its adhesion and strength.
Does DITRA need underlayment?
In order to protect the integrity of the tile assembly, an underlayment that performs multiple functions is required. DITRA is specifically designed to allow the installation of ceramic and stone tile over any even and load-bearing substrate.
What do you lay DITRA with?
DITRA is approved for use with ceramic, porcelain, and natural stone tile. It can be installed over a variety of substrates including plywood, OSB, existing vinyl, structural planks, and concrete. For this project, the DITRA is being installed over radiant-heating element embedded in self-leveling mortar.
How thick should subfloor be for DITRA?
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). DITRA allows for ceramic tile application over single-layer plywood or OSB subfloors on joists spaced up to 19.2″ (488 mm) o.c.
How long after laying DITRA can I tile?
Once DITRA has been installed on the substrate, tile can be installed right away. No need to wait for the mortar to cure.
How do you lay DITRA on wood?
Step 1: Gather Materials. Tile floors… Step 2: Know Joist Spacing. Step 3: Mix Modified Thin-Set. Step 4: Measure Floor Dimensions and Cut DITRA. Step 5: Dry Fit DITRA. Step 6: Clean & Dampen Wood Subfloor. Step 7: Apply Modified Thin-Set. Step 8: Embed DITRA Into Thin-Set.
When should you use DITRA?
Ditra is a type of mat that is mainly used when tiling on surfaces that cannot bear movement, deflection, or moisture. These surfaces, when exposed to these conditions after tiling, result in cracked tiles. MDF, OSB, and plywood are some of the best examples of such surfaces.
When should you use DITRA matting?
DITRA Matting is particularly useful when installing underfloor heating and provides a decoupling layer between the underfloor heating and the tiles.
How much thickness does DITRA add?
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).
What is the difference between DITRA and DITRA-XL?
DITRA allows for ceramic tile application over single-layer plywood or OSB subfloors on joists spaced up to 19.2″ (488 mm) o.c. DITRA-XL is 5/16″ (7 mm) thick, which permits even transitions between tile and 3/4″-thick hardwood flooring.
Can DITRA be used with porcelain tile?
Therefore, extended cure times would be required before grouting if using modified thin-set mortars between DITRA and ceramic tile, including porcelain tile. If extended cure times were not observed, the results could be unpredictable.
Can I use DITRA mat on floorboards?
Using a 3x3mm notched trowel, apply a layer of UltraTile ProFlex SP over the floorboards to a sufficient depth to secure the fabric fleece on the Schlüter®-DITRA underside of the matting. Lay the matting into the wet/tacky adhesive and press firmly into place, abutting all edges.
How thick can thinset be under DITRA?
The Ditra membrane itself is 1/8″ thick, and Schluter recommends using a size 1/4″x3/16″ V notched or Square notch trowel 11/64″x11/64″ between the subfloor to Ditra, and 1/4″x3/8″ square or U notched trowel between Ditra to the tile.
How thick should thinset be over DITRA?
In most installations, a layer of thinset 3/16 to 1/8-inch thick is sufficient. Too much thinset creates a mess and inhibits proper bonding between the tile and the substrate.
Does DITRA need Schluter?
Professional tile installers and DIY homeowners use Schluter-DITRA matting to prevent the cracking of tile and grout caused by movement substrate, the foundational material beneath the tile. DITRA is also noted for its ease of use when compared with materials like cement backer board.
Does DITRA need to dry before tiling?
How long do I have to wait before I can install tile on the Schluter®-DITRA membrane? Once DITRA has been installed on the substrate, tile can be installed right away. No need to wait for the mortar to cure.
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