I am planning to install solid oak TnG boards (160mm wide) onto an calcium sulphate screed with UFH. My current plan was to glue the boards using Sika Bond T54 adhesive. I have various movement joints installed in the screed where there are protusions off the main rectangular room shape I.e. Dormer window and wardrobes. Should I install a threshold at these movement joint locations as you would do with tiles to allow for differential movement between the screed and wood floor? All areas in any one room are heated by the same UFH loop so there should be minimal temperature differences between areas