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Concrete
Concrete is subject to lengthy deformation processes due to shrinkage. Concrete and pre-stressed concrete may build up tension because deflection. Ditra absorbs inherent stresses between the concrete and tile covering so that the tile can be installed as soon as the concrete is hard enough to be walked upon.
Mortar Screeds
According to the applicable standards, mortor screeds must cure for a minimum of 28 days prior to the installation of tile, and their residual moisture content must be below 2% (percentage by volume). In particular, floating screeds and heated screeds tend to change shape or develop cracks after installation, e.g. due to the load stresses or temprature changes. With Ditra, tiles can be installed as soon as the screed is hard enough to be walked upon.
Gypsum Based Screeds
According to the applicable standards, the residual moisture of gypsum based screeds should not exceed 0.5% (percentage by volume) prior to the installation of tiles. With the application of Ditra tile coverings can be installed as soon as the residual moisture is below 2.0% (percentage by volume).
If required, the screed surface may need to be pretreated (sanding, priming) in accordance with the applicable industry standards and maufacturers' recommendations.
Ditra can be applied using thin-bed adhesives that are suitable for the substrate. Ditra protects the screed against moisture penetration from the surface. Gypsum based screeds are sensitive to moisture and must be protected from additional moisture penetration, especially on the underside.
Radiant heated screeds
Ditra may be used over heated screeds as described in the sections on mortar screeds and gypsum based screeds. With Ditra, tiles can be heated seven days subsequent to installation.
Starting at 25c, the radiant heated floor temp can be raised gradually by 5c per day, to a maximum of 40c. The air channels of Ditra allow for a quick and even distribution of heat below the tile covering.
Ditra is also recommended for uncoupling of radiant heated floors consisting of thin electric heating mats. Ditra may be installed either above or below the heating mat. However, the uncoupling function is more effective if Ditra is installed above the heating mat.
Concrete is subject to lengthy deformation processes due to shrinkage. Concrete and pre-stressed concrete may build up tension because deflection. Ditra absorbs inherent stresses between the concrete and tile covering so that the tile can be installed as soon as the concrete is hard enough to be walked upon.
Mortar Screeds
According to the applicable standards, mortor screeds must cure for a minimum of 28 days prior to the installation of tile, and their residual moisture content must be below 2% (percentage by volume). In particular, floating screeds and heated screeds tend to change shape or develop cracks after installation, e.g. due to the load stresses or temprature changes. With Ditra, tiles can be installed as soon as the screed is hard enough to be walked upon.
Gypsum Based Screeds
According to the applicable standards, the residual moisture of gypsum based screeds should not exceed 0.5% (percentage by volume) prior to the installation of tiles. With the application of Ditra tile coverings can be installed as soon as the residual moisture is below 2.0% (percentage by volume).
If required, the screed surface may need to be pretreated (sanding, priming) in accordance with the applicable industry standards and maufacturers' recommendations.
Ditra can be applied using thin-bed adhesives that are suitable for the substrate. Ditra protects the screed against moisture penetration from the surface. Gypsum based screeds are sensitive to moisture and must be protected from additional moisture penetration, especially on the underside.
Radiant heated screeds
Ditra may be used over heated screeds as described in the sections on mortar screeds and gypsum based screeds. With Ditra, tiles can be heated seven days subsequent to installation.
Starting at 25c, the radiant heated floor temp can be raised gradually by 5c per day, to a maximum of 40c. The air channels of Ditra allow for a quick and even distribution of heat below the tile covering.
Ditra is also recommended for uncoupling of radiant heated floors consisting of thin electric heating mats. Ditra may be installed either above or below the heating mat. However, the uncoupling function is more effective if Ditra is installed above the heating mat.
