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Schluter Ditra-Heat Electric Floor Heating Membrane with Uncoupling, Waterproofing, Vapor Management and Load Support - Ideal for Tiles and Stone - 1/4-Inch Thickness, 134.5 Square Feet Roll - DH512M

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$354.08

$ 99 .00 $99.00

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  • Stability Support - Engineered with innovative column-like mortar structures that effectively distribute the load, ensuring robust floor stability.
  • Versatile Application - Designed for installation under ceramic and porcelain tile, natural stone, and other resilient flooring materials, enhancing both comfort and durability.
  • Streamlined Transition - Features a slim 1/4-inch profile that provides a subtle transition, reducing elevation discrepancies between different flooring types.
  • Efficient Heating - Integrates with Ditra-Heat-E-HK heating cables and includes an uncoupling feature to protect against tile and grout damage.
  • Effortless Installation - Securely encapsulates heating cables without the need for self-leveling compounds, streamlining the installation process.



Product Description

Schluter A+

Ultimate Tile Protection

Membranes

Prevent tile cracks and water damage with our specialized membranes

Schluter Ditra Membrane

Schluter-DITRA-HEAT integrates customizable, comfortable electric floor warming with the functions associated with DITRA: uncoupling, waterproofing, vapor management and support to ensure a long lasting installation.

Schluter Ditra

How to Install Your Ditra Membrane

Note: Type, thickness, and format of the tile or stone surface covering must be suitable for the intended application. Minimum tile format is 2" x 2" (5 cm x 5 cm).

1. Using a thin-set mortar that is suitable for the substrate, apply the thin-set mortar (mixed to a fairly fluid consistency, but still able to hold a notch) using a 1/4" x 1/4" (6 mm x 6 mm) square-notched trowel.

2. Apply DITRA-HEAT to the floor, fleece side down. Solidly embed the matting into the mortar using a float, screed trowel, or DITRA-ROLLER, making sure to observe the open time of the bonding mortar. If the mortar skins over prior to matting installation, remove and reapply. Note: It may be helpful to back roll the end of the matting before installation, or place boxes of tile on top of the matting after installation, to avoid curling.

*When using the DITRA-ROLLER, place a weight (e.g., bags of mortar/grout or box of tile) not to exceed 75 lbs on the DITRA-ROLLER shelf. Slowly move the roller from one end of the matting to the other, slightly overlapping successive passes.

3. Lift up a corner of the matting to check coverage. Proper installation results in full contact between the fleece webbing and the thin-set mortar. Note: Coverage may vary with mortar consistency, angle at which the trowel is held, substrate flatness, etc. If full coverage is not achieved, remove and reapply, making sure to verify proper mortar consistency and application.

4. Abut end and side sections of adjacent sheets. Note: Aligning the studs on the top of the matting during installation can help make subsequent heating cable installation easier.

5. The DITRA-HEAT-E-HK heating cables can now be installed. Installation instructions are covered under the DITRA-HEAT-E-HK product page. Note: Tile can be installed directly over the DITRA-HEAT membrane immediately after the Schluter-DITRA-HEAT-E-HK cables have been installed using an unmodified thin set.

About Us

Always One Step Ahead of the Times!

At Schlüter-Systems, we pride ourselves on being pioneers in the tile assembly industry. Founded in 1966 by Werner Schlüter, we continue to meet the evolving demands of the industry by developing practical and effective solutions for tile installation challenges. Today, Schlüter-Systems' has evolved from a modest idea into a company with over 40 product lines recognized and utilized in various countries around the world, maintaining our commitment to innovation, quality, and service.

Schluter
  • Standard cable spacing is 3 studs. Alternating 3-2 stud intervals may be used to increase heat or use more cable length, especially over uninsulated concrete. Spacing over 4 studs is not recommended as it may cause uneven temperatures.

  • Yes, DITRA-HEAT-E-HK heating cables can be installed on the top surface of shower benches. Ensure careful installation into the matting with Schluter-KERDI on top.

  • DITRA-HEAT-E-HK heating cables are made to fit the DITRA-HEAT membrane, with power output and cable diameter designed for secure stud placement.


Nicholas J. Devries
Reviewed in the United States on February 26, 2025
Wonderful decoupling membrane that channels the electric floor heating cable. Keeps everything straight and in place.
Dennis F L
Reviewed in the United States on September 24, 2024
Just what I needed... and on sale...delivered to my door!
Michael Tveter
Reviewed in the United States on May 22, 2024
easy tu use
Pedrito
Reviewed in Canada on March 21, 2024
Delivery was excellent and no damage. It was the best price I could find anywhere.
Brian
Reviewed in the United States on March 10, 2022
Using a decoupling membrane is a great way to add stability to the floor you install. In this case, it is a mosaic marble tile. This type of tile is going to crack if you don’t have a stable base.In this case, this is meant to carry the wire for the heating element. Installs the same as the regular Ditra, but has the channels for wiring.Top tip: this ships in a roll and likes to keep that shape. Lay it flat and install will get a lot easier.
D2E
Reviewed in Germany on March 29, 2021
I had grout lines crack in bathroom in wooden house structure (even with using cement sheets). Bathroom floor was always cold too. So I learnt about this product and installed floor heating myself.Works well and I hope no more grout line cracks!!
Bal Gheorghe
Reviewed in Canada on December 19, 2021
Installation de planche chauffante. Dans la salle des bains.
Curt
Reviewed in the United States on April 3, 2021
I'm doing a bathroom remodeling project. One of the updates is adding floor heating. This item fills the requirements for a floor heating mat for its respective heating wire. If you are going to use this company (Schluter) floor heating system (i.e. heating wire) then you need this as the mat for holding it in place. I'm using a 3-2-3 pattern. The company has updated its requirements for the old standard of just a 3-3-3 pattern. That I liked.
Pierre Gagnon
Reviewed in Canada on July 11, 2020
No issues. Great product.
David M Hollway
Reviewed in the United States on June 10, 2020
What attracted me to the DITRA-HEAT system was that it gives a lower total Z-height when compared to traditional backer-board-plus-heating-mat solutions. This was important because I needed to match up with existing hardwood floors. As you can see from the photo, it worked absolutely perfectly to within a millimeter.I am an amateur at this, but there's plenty of great "how-to" resources both on Schluter's website and on Youtube. Routing the heating cable was a little tricky, having to pay attention to all the rules (3-stud spacing minimum, 7" from any floor registers, etc etc) but nothing too bad.Protip: when you lay the matting, you do need a roller of some sort to flatten and bed it into the thinset mortar. Schluter offer one, but for about 1/4 the price I picked up a hardwood roller from the local big box DIY store, intended for installation of vinyl flooring. Works perfectly. Also, be sure to have plenty of heavy objects to hand ready to press the membrane down while the thinset hardens! I used the boxes of tiles I subsequently installed.I now have a hallway and bathroom floor that are pleasantly warm underfoot. 10/10, will buy this again when I remodel the other bathroom!
Jarrod
Reviewed in Canada on March 3, 2020
You need to shop for pricing quotes. I saved 200 for two small bathrooms. Approx 130 sq ft.
k.Benfiel
Reviewed in the United States on July 10, 2015
This stuff is fantastic! Easy to install, accepts nuheat cable for $$ savings, and is easy to install over. Unlike the mesh mat system, this wire fits down inside the grooves and is then encased fully in UNMODIFIED thinset to provide a really flat substrate for tile install. No mesh/wire mats to float out while installing or backer board to cut. It's a great way to get a quality heated floor.
Loshento
Reviewed in the United States on November 20, 2015
This has some minor flaws and takes some practice getting used to.The membrane is much thicker than Ditra's 1/8 membrane for non-heated areas. Thus, the concept of mixing this with there other product should be nixed in your thinking. For a large area, say a kitchen/open space, where you don't need heat for some of the floor (say where counters go, or where you know furniture will be semi-permanently) you should still use this more expensive membrane and not mix with the "standard" 1/8.because it is thicker, it wants to pop off the floor as it retains its roll. You need to weigh down the ends to make it stick.If your mortar underneath is uneven, it is very hard to smooth this out on a large floor. You really do want a way to squeeze this out.The seams combined with the kerdi strip will be significantly thicker. This is a bit of a pain if you are using thin set mortar that is "loose" as it is hard to keep the tiles even across the strip.The membrane, in my experience, seems to accentuate any floor uneveness, not smooth it out as you would expect. If I had it to do over again, I would have put a 1/4" hardboard on top of the subfloor.It works well with NuHeat cabling, which I think is superior to the Ditra heat cabling. Note that the NuHeat cabling calls for a 3" and 2" staggered or all 3" staggered layout of the cables. The Ditra membrane has spacing that is a bit different than that, so you want to use the 3 and 2 staggered just to get to the same 3 inch all layout that is recommended. This is not a criticism of the product, just an installation note if you use NuHeat.The installation instructions are "OK" but not great. They seem to combine the instructions between their standard product and the Heat product.Overall, this is a good product, but it was not the no brainer I wanted it to be . Be careful on large areas and remodel floors versus new floors.
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