What is a tile adhesive?
By definition, a tile adhesive is used for bonding tiles onto a surface. Additives can also be used to improve the performance of adhesives. A tile adhesive can either be cement based or a pre-mixed paste. The adhesive required for a tiling project will depend upon the surface, substrate, type of tiles to be used, area and conditions of the installation, such as temperature and humidity.
What type of tile adhesive should I use for stack stone?
For heavy stones, we recommend SE-7 mixed with Davelastic.
Can I tile over tiles and if so what adhesive should I use?
Yes. We recommend using Ultrabond primer as a first underlay then when cured an application of a flexible cement based adhesive or SMP Evo without any primer. In wet area applications, Davelastic should be mixed with the tile adhesive.
Can I tile directly over brickwork and if so what adhesive should I use?
No. We recommend rendering with an acrylic modified render which is then primed with PrimeX. SMP Evo tile adhesive is then used after 24 hours curing. SE-7 or Powder Mastic can also be used however the cement must have cured for 7 days prior to application of the adhesive.
What adhesives are suitable for tiling over villa board?
Villa board is a flexible substrate. After priming, we recommend using SMP Evo, Powder Mastic or SE-7 on flexible substrates.
Can I tile directly onto a timber floor?
No. We do not recommend tiling directly. Apply 6mm thick ceramic tile underlay prior to tiling onto a timber floor.
What is the effect of high temperatures on cement based adhesives?
The higher the temperature, the faster the cement particles react with water. When accelerated by temperature, and not by special ingredients in the formulation, the cement crystals which form are much smaller and therefore bonding is much weaker.
What is the effect of low humidity on cement based adhesives?
The presence of water is required to react with cement crystals. If the water evaporates from the adhesive before the particles have reacted the bonding will be weaker.
What is the effect of high temperatures and low humidity on cement based adhesives?
The result of these two factors is a considerable reduction in pot life, open time and adjustment time.