If it goes beyond a certain limit, the weakest portion of the entire system would yield. As a result, stresses build up at the interface between the tile and the substrate. This causes the expansion or contraction to be different for all three materials. For example, the coefficients are different for the screed and the adhesive and the tiles. The extent of expansion and contraction of different substances in response to the same amount of heat depends on their coefficient of thermal expansion. Any material expands when it is heated, and contracts when the temperature reduces. The actual reasons for the problems are the screed (layer of mortar etc.) applied beneath the tiles, along with any adhesives etc. This is not simply because of the heat on the tiles themselves.
Thermal expansion and contraction can play a major role in the durability of tiles. rolls or convenient 39″ x 49’2″ sheets for smaller projects. The STRATA HEAT Mat is available in 161 sq. As with other Laticrete uncoupling products, STRATA HEAT Mat offers faster drying times for the thinset and allows for the use of modified or unmodified thinset depending on the requirements of the installation.
The STRATA HEAT Wire is connected to the user friendly programmable Laticrete STRATA_HEAT THERMOSTAT for convenient floor heat control. The STRATA HEAT MAT is designed to hold the STRATA_HEAT Wire in place under the tile as well as the thinset used to bond the tile. The Laticrete STRATA HEAT Mat not only offers all the lightweight, easy-to-install benefits of the STRATA_MAT, but also a convenient method to provide under-tile floor warming comfort.
Strata mat series#
Then skim coat the wires with thinset and let that dry.
Strata mat install#
My advice: install the Ditra Heat mat one day and install the electric heat wire on a different day. Again, I think this is a bad idea.Īs mentioned, when you have to pick a tile up and re-install it (you will have to do this- more than once) the suction of the tile can pull up the Ditra mat causing it to break the bond to the plywood. Don’t install tile the same day over the Ditra Heat mat This is what happens with Ditra-Heat when you try to prefill 2.
Only certain ones are approved for this type of installation. Be very careful which self-leveling product you use. This is another practice that Schluter does not endorse but other manufacturers do. Use a self-leveling product to prefill.Use a completely different kind of underlayment for your tile like, for example, cement board.There are several different brands and I like both Strata_Heat and Flexbone Heat for uncoupling heat membranes Prefilling and installing Kerdi membrane over Ditra-Heat (I know, more time and expense).This is a problem because when you’re installing tile and you have to pick a tile back up you will have the a bunch of the hard little centers stuck to the back of your tile.Ĭonsequently, if you want to use Ditra-Heat it’s best to not prefill the mat and just fill it in when you are setting your tile- all in one step. However, in doing so, it makes it so that prefilling is even more problematic than previously as the little centers pop loose much more easily. February 2022 update:Īpparently, Schluter has made an adjustment to the manufacturing process for Ditra-Heat in an effort to make it more pliable so that it lays down flatter. You can prevent this by pre-filling the waffles.Īn additional benefit of prefilling Ditra mats is being able to snap chalk lines and actually being able to read them. The wire can stick to the underside of the tile. If you have to pick a tile back up after it’s been set (during installation) you won’t drag the wires out with it.It helps to protect the wires from the teeth of your trowel when combing the mortar.Ditra Heat Duo has additional insulation for going over concrete floors.
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