Tec Non Modified Mortar For Floors Kerdi

At an ntca schluter workshop the statement was made that the preferred method of installation over ditra is the use of an unmodified thinset.

Tec non modified mortar for floors kerdi. Versabond is a mildly modified thinset and thus voids schluter s warranty. The reemergence i know doesn t even look like a word of unmodified thinsets came about in november of 2001. There were tests run and depending on the tile it showed that a modified between the kerdi ditra membrane and a porcelain tile took between 15 and 60 days to dry out. Frankly working with more than one type of mortar seems unnecessarily complicated.

Anyone know how modified is the superflex. A modified must both dry and cure to reach full strength. It is also highly recommended for floors. In principle modified mortars also could be used over water absorbing substrates such as drywall cement backerboard or dry pack mortar but seams and connections to the kerdi drain would still need to be constructed using unmodified thinset mortar.

Non modified mortars custom s non modified mortars deliver the basic qualities necessary for specialized tile installations and for use with specific membranes that are not compatible with polymer modified or fortified thin set mortars. Ultimate 6 plus significantly reduces the need for back buttering and has excepational non sag non slump characteristics for wall and floor applications. The thin set mortar used for bonding kerdi must be appropriate for the substrate and must penetrate and engage the kerdi fleece. The kerdi and mortar i have put up will have a long long time to setup.

Ultimate 6 plus is a high performance polymer modified full coverage mortar with a unique combination of features that allow grouting in 6 hours while providing an extended open time. Also stated that every other membrane manufacturer recommends using modified thinset. The rep at tec said it is absolutely no problem and he even recommends the modified over the un modified mortar. Since kerdi is impervious it does not deprive the mortar of its moisture.

Full set plus unmodified thin set mortar is a high strength quick grab unmodified formulation ideal for wall installations of non porous or semi porous tile. Can it work yes. This mortar can be used to install most tile over cementitious surfaces. When installing kerdi with unmodified thin set mortar over particularly dry and porous substrates it is recommended to dampen the substrate first in order to help prevent premature drying or skinning of the thin set.

To better understand this modified vs. Unmodified thinset talk you might want to know the behind the scenes of this mortar blend and how modified thinset came to life.