Provides the same four functions as Schluter®-DITRA – Uncoupling, Waterproofing, Vapor Management and Support – but is 5/16” thick, instead of 1/8”.  Increased thickness allows for even transitions between typical ceramic tile and 3/4” hardwood flooring, and allows for ceramic tile installations over single layer wood floors with 24” o.c. joist spacing.  Website: Phone: 800-472-4588