Specification of the most appropriate expansion joint is the job of the building professional specifier as there are so many factors that can contribute to the movement of building structures, such as; settlement, deflection, expansion, creeping, shrinkage, thermal and moisture influences.
It is therefore necessary for careful planning of proper expansion and structure joints layouts both during the slab/mortar bedding phase and at floor level. Planning for the right type of joint is a task which involves the calculations of the movement ranges, tensile strengths and the thermo-hygrometric coefficient readings in relation to the type of construction and relative coverings and to how they interact with all the combined building materials. The underlying mortar bed sectioning is a determining factor in guaranteeing a job well done, whether the covering is laid with the thin bed adhesive or the traditional deep bed method.
Once the most suitable expansion joints have been determined by the professional specifier, such as an architect, TTTrims has a wide range of expansion joint trims available.