What do you stick DITRA matting down with?
Installing DITRA Matting
- Apply a layer bonding adhesive to the level substrate using a 3x3mm or 4x4mm notched trowel.
- Cut DITRA matting to size if required, then embed the anchoring fleece on the underside of the matting into the adhesive so that its entire surface is strongly bonded.
Can you use modified mortar on DITRA?
Since DITRA is impervious, it does not deprive the mortar of its moisture. This allows the cement to properly hydrate, resulting in a strong, dense bond coat. In general, we don’t recommend the use of modified thin-set mortar to set tile over the membranes because these mortars must air dry to cure properly.
What mortar do I need to use for the Schluter heated floor system?
Schluter-Systems requires the use of Schluter SET™ , ALL-SET™ , FAST-SET™, or an unmodified thin-set mortar meeting the requirements of ANSI A118.
Can Schluter DITRA be installed over OSB?
DITRA allows for ceramic tile application over single-layer plywood or OSB subfloors on joists spaced up to 19.2″ (488 mm) o.c. The same physical principle applies to DITRA installations. Column-like mortar structures are formed in the cutback cavities of the matting.
What is better Ditra or cement board?
Ditra is waterproof, while cement board lets water through but won’t be damaged by it. This may make Ditra a better choice if moisture from below is a concern, such as with some outdoor applications or installations over concrete. This difference, Ditra fans would argue, makes it more resistant to movement.
Is Ditra necessary on plywood?
Ditra should be installed on plywood subfloors using modified thinset mortar, not unmodified.
Can I use unmodified thinset on plywood?
Thinset is the wet base that you first trowel on the plywood to make the tile stick. Higher latex content is essential for bonding to plywood. A quality unmodified thinset should be used and mixed with a latex additive.
What happens if you use modified thinset on Kerdi?
Modified thinset mortars aren’t recommended for use with Kerdi because they must dry out to gain strength, whereas the membrane inhibits drying, which can lead to unpredictable results. Schluter’s recommendation is to use unmodified thinset mortar when installing Kerdi over most shower substrates.
How long does thinset take to dry under Ditra?
Subsequently, drying takes place only through the tile joints. Unmodified thinset is a mixture of Portland cement which actually requires moisture to form a strong bond and achieves final set usually within 24 hours.
Do I need Ditra on concrete floor?
Yes, writes Doug McEvers, Ditra will insulate the concrete slab from the tile and lower the potential for thermal storage. “There is nothing wrong with tile laid directly on concrete providing all precautions are taken regarding moisture proofing,” he says. “Tile and grout work loose if the underlayment flexes.
What is the purpose of Ditra matting?
Schluter DITRA Matting is designed for tile and natural stone installations, and serves as a waterproofing membrane, a vapour pressure equalisation layer to accommodate moisture occurring at the underside of the substrate and an uncoupling layer for problematic substrates. The substrate must be even and load bearing.
What is the best backer board for tile shower?
Cement board is a good, reliable backer board that works well on both floors and walls. Keep in mind that most tile setters err on the side of caution and brush a waterproofing membrane on top of cement board when it is in wet areas like showers or tub surrounds.
Which is the best uncoupling mat for Ditra?
Update: Schluter just recently came out with their own line of Schluter branded thinset mortars. They have both modified and unmodified and approve their use with Ditra. edit: Spiderweb is now Redgard Uncoupling Mat and, as a result, comes in a new snazzy red color!
What do you need to know about Schluter Ditra?
Designed specifically for ceramic tile and dimension stone installations, DITRA serves as an uncoupling layer, waterproofing membrane, and vapor management layer that accommodates moisture from beneath the tile covering.
Can you use Schluter thinsets on Ditra tile?
Schluter wants unmodified thinsets used to bond the tile to the Ditra. As a result, this can cause conflict due to some manufacturers wanting you to use modified thinset for the larger tiles that are more common today. To get around this, you can use rapid-setting thinsets mortars (I don’t know if Schluter will warranty this).
What kind of mortar do you use for Schluter cut back?
Fill the cut-back cavities with Schluter SET, Schluter ALL-SET, Schluter FAST-SET, or unmodified thin-set mortar and comb additional mortar over the matting using a trowel that is appropriate for the size of the tile. Solidly embed the tiles in the setting material.