I had some ceramic flooring done and the person did not put a threshold down. I custom ordered a granite threshold but now I need to know how to install it. When the ceramic tile was installed, he used Duraloc on top of the plywood flooring. Needless to say, the saddle will be lower than the ceramic tile. Question: 1. How can I build the saddle up so that it would be even with the Duraloc prior to laying the saddle and 2. Can I use an adhesive glue to lay the saddle or must I use mortar thinset? Any help would be appreciated.
Use a multi flex white thinset mortar. This will help in your build up of the threshold. Any build up of a inch or greater will need Ardex feather finish to create the build up and then use multi flex white thinset mortar. Good luck
Never use a glue on the floor, and never with a granite, it will not bond properly. A good thick layer of white mortar will cushion it properly. If you don't put enough down you will eventually get cracking in the threshold, natural stones when thin like that are very fragile, our guys have even broke them pushing them into place. Not something you want to happen to a custom piece it's probably costing you a fortune for a little piece!