Synthetic resin grouting as an alternative to conventional mortar

A synthetic resin grout ensures that the feared and constantly annoying cement curtain does not exist. With regard to frost protection, synthetic resin compounds are not uncontroversial. Similar to other joint fillers, the synthetic resin products have to match the structure, the plates, the joint width and depth as well as the expected load.

Construction and water permeability

A laid plate floor must always be considered as a complete system. The synergy effects between construction and jointing must be taken into account in order to avoid causing any damage. There are bound and unbound constructions. Roughly speaking, unbound structures are permeable to water. The beds are made of gravel, chips and / or sand.

Bound structures are waterproof and rigid. While resin bonding is not a problem with bonded systems, as long as the grout has the right viscosity and pot life, it must be decided individually for unbonded systems. Sufficient water permeability of the chosen product must be ensured by an appropriate amount of synthetic resin.

Materials and optics

A decisive advantage of synthetic resin grouting is the absence of a cement curtain. It is practically unavoidable and expensive to remove on natural stone slabs, especially with dark surfaces. Another advantage of the Kunstharzverfugung may be the precise adaptation to optical requirements and desires. Gloss and matte effects are easier to control than with other joint fillers.

Joint size

The wider the joints, the greater the surface appearance of the joints. Since the water permeability of the Kunstharzverfugung can be better regulated by a growing width, the optical design freedom of the resin products can be played here. The narrower the joints are, the more difficult is adequate consistency in unbonded systems.

The deeper the joints are, the more precisely the viscosity and pot life of the joint filler must be adjusted. A uniform distribution and complete avoidance of air pockets and cavities creates frost protection.

Traffic load

In order to cope with the expected traffic load, care must be taken to ensure the elasticity of the selected filling compound after drying out during synthetic resin grouting. Synthetic resin can generally be adapted very precisely to the required tensile and compressive forces, but must be selected and prepared accordingly.

Tips & TricksIn the case of unbonded systems you should refrain from synthetic resin grouting where the joint width is less than three centimeters. In most cases, water permeability is not sufficient for narrow joints.
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