Before applying microcement, we must prepare the substrate to avoid future problems. For this reason, we have listed the most common substrates in construction. Depending on each one, and its circumstances, we will have to use some products or others.
PREPARATION OF SUBSTRATES FOR MICROCEMENT
*Important: the following technical recommendations guarantee a satisfying result as long as the work project runs smoothly. However, we always recommend that the professional evaluate and carry out a tasting of the substrate before starting the project in order to decide on the best solution. This will avoid possible unexpected events affecting the state of the microcement.
Before applying microcement, check that the substrate is in good condition. The tensile strength should be 1.5 N/mm2 “Pull-off test”. If this is not the case, a concrete consolidator should be applied. If there is humidity we will apply a vapour barrier called Vapoepox 100, an anti-humidity epoxy primer. Finally, apply two coats of Microcement Base.
Ready-mix self-leveling mortars
Bagged self-leveling mortars
Compactec “If the substrate is of low quality”
Vapoepox 100 + Mesh “If there is a lot of humidity”
Microröck or Microflex Base
*Which microcement base do I use out of the two? There is a basic concept and that is when something is very hard it has less elasticity and vice versa.
With this concept we will use Microröck Base if what we want is a very resistant and hard support. If, on the other hand, we prefer a more elastic support that avoids cracking, we will use Microflex Base.
UNDERFLOOR HEATING SYSTEMS
For radiant floors, Microdur or Microflex, heat-conducting microcements, must be applied directly.
Microdur or Microflex base
As it is a very porous surface, it will be necessary to use primer TAC + Mesh.
Primer TAC + Mesh
Due to the joints, a joint filler, a special epoxy joint filler and joint smoothing compound must be used.
Natural stone or limestone
Jointepox (Sealing cap)
Microröck or Microflex base
As it is a very flexible material, we will use Microflex base, perfect to support the contractions and expansions of the material.
For the areas that contain water, we will apply Base Micropool, as it is waterproof in mass.
DO YOU HAVE DOUBTS ABOUT MICROCEMENT?
We want to help you with your project.
If you have any questions or need more information, please contact us, we will be happy to advise you and give you a budget.