Uncoupling Mat Mortar Kerdi

Uncoupling membrane mortar unmodified mortar to use with uncoupling membranes.

Uncoupling mat mortar kerdi. Mix with water no additive required. Spiderweb is now redgard uncoupling mat and as a result comes in a new snazzy red color. Redgard uncoupling mat s bonding layers have reinforced fleece which locks mortar into the mat ensuring strong reliable installations. Ditra works like a dovetail joint.

To bond ditra and ditra xl to the substrate. Schluter ditra and ditra xl are specifically designed for ceramic and stone tile installations ditra and ditra xl provide uncoupling to prevent cracked tile and grout. Since ditra is impervious it does not deprive the mortar of its moisture. It is difficult to find and has limited availability.

To set ditra over concrete or gypsum schluter systems recommends an unmodified thin set mortar meeting the requirements of ansi a118 1. If you can get your hands on it use it. There s also stratamat flexbone and others that allow for modified mortars. For example to set ditra over plywood or osb a modified thin set mortar meeting the requirements of ansi a118 11 is used.

The felt backing anchors onto a layer of thinset mortar applied to the subfloor and the dimples on the top hold another layer of. Made of polyethylene ditra and ditra xl serve as a waterproofing layer that protects moisture sensitive substrates such as plywood osb. Redgard uncoupling mat is designed differently than bonded membranes. Use one 50 lb.

Known as dimple mat by some contractors an uncoupling membrane is a 1 8 inch thick sheet of plastic material with a synthetic fabric or fleece backing and a surface covered with square cavities or dimples. The type of thin set mortar used to install ditra depends on the substrate material. This allows the cement to properly hydrate resulting in a strong dense bond coat. This is custom s premium unmodified mortar made specifically for custom s spiderweb mat and other ditra like products.

Can be mixed with mapei s polymer additive instead of water for enhanced performance and for setting a wider range of tile and stone over additional substrates. Use as a medium bed or thin set mortar for installing tile and select natural stone on floors and walls. To bond tile to ditra using a 1 4 x 3 8 6 mm x 10 mm square or u notched trowel. 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.

Coverage may vary with mortar consistency angle at which the trowel is held substrate flatness etc. 22 68 kg bag of mortar per 150 200 ft 2 13 9 18 6 m 2. 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. For use with uncoupling membranes.

Use one 50 lb 22 68 kg bag of.