Resin-bonded joint fillers are usually used when designing privately used paved areas such as sidewalks in the garden, house entrances, or driveways to the garage. These also have the advantage that they are usually drainable. If you choose a plaster with a joint width that is not too narrow and fill the joints with these joint fillers, the surface remains permeable. It is therefore considered to be “not sealed” – an aspect that should not be neglected with regard to possible wastewater charges.
Resin-bound technology for unbound substructure
In contrast to hydraulic joint fillers, resin-bound systems from can also be used on an unbound substructure, as they are less rigid. They are able to absorb the spring effect of the plaster without damage when stressed or deformed due to temperature fluctuations. A prerequisite, however, is sufficient joint width and depth. As a rule, the joint should be filled to about 2/3 of the stone thickness with a joint filler.
However, if you plan a garage entrance with a slope situation, it makes sense to put the paving stones in an 8-10 cm thick, drainable mortar layer only then to grout. This gives the overall structure better stability and prevents the slight formation of lanes that can be observed again and again when entering a garage.
One or two-component systems for resin-bound driveways
In the case of resin-bound systems, a distinction is made between one-component and two-component systems. These differ on the one hand through different processing methods and on the other hand through their ultimate strength. The two-component systems cure with higher final strength and can therefore also be used with higher traffic loads. In the pedestrian area, on the other hand, you can also grout with one-component products without any problems.
If the one-component system is chosen, it must be ensured that the paving surface must be clean and absolutely dry before it is applied. This also applies to the drying process after it has been introduced – rain protection may have to be used.
For a two-component system or technology, resin-bound joint fillers must be mixed with a hardener component before being applied. The paved surfaces are well pre-wetted, which further simplifies the application of the grout. The grout literally slides through the film of water into the open joints.