- Training Academy
The suitability of a substrate should always be fully assessed before carrying out any tiling.
The main criteria to be assessed is:
If the answer to any of these is ‘no’, then the substrate is not suitable to be tiled onto and further preparation is required before priming and fixing.
Priming of substrates is key to ensuring the selected adhesive can perform to its optimum. There are three basic reasons why priming is important. UltraTileFix provides the perfect solutions.
General priming guidance is to use UltraTile ProPrimer when tiling onto a porous substrate such as sand/cement. Whereas UltraTile ProPrimer neat should be used on non-porous substrates such as ceramic, terrazzo, asphalt and epoxy based damp proof membranes. We do not recommend the use of PVA for priming and have produced an article to explain this.
Read: PVA for Priming – Good Practice or Bad Habit.
For underfloor heating systems in terms of priming please see specific advice guides.