E
ExplodingPudding
I'm thinking towards a flexible Addy and grout to allow for movement. But if I use ditra then I could use some non flexible bal rapid set I'm guessing?
The Durabase matting requires a flexible adhesive. If time is of the essence then try the PTB Fibre+. Pourable and flexible with a good trade price for a white adhesive. If you don't have a trade account in Topps then I suggest opening one as the discounts are very agreeable for traders. Don't have to use pourable however, most stores will carry admixture to make the standard BAL Rapid, flexible if you prefer to do it that way.