DITRA-Heat in Shower | Detail & Tray Adjustments
Installing DITRA-Heat in a shower increases the floor assembly height by the thickness of the membrane used; 1/4” for DITRA-Heat membrane and 5/16” for DITRA-Heat DUO membrane. DH-SH-23 is the detail taken from the DITRA-Heat installation handbook with critical information for installing DITRA-Heat in a shower application. Photos of the detail are included below. When Using Schluter Shower Trays Remove the center break-out section of the tray that supports the drain flange, highlighted in green below. Use the break-out as a template to cut a ring out of the DITRA-Heat membrane that you are using. Install the DITRA-Heat membrane underneath the break-out support to lift the flange assembly up to meet the DITRA-Heat membrane that will be installed over the shower tray as shown below. KERDI waterproofing membrane must be installed over the wire in the shower floor so that the sealed waterproof envelope is over the whole assembly. For KERDI-Line drains, use the grey foa...