for the pointing of surfaces with slabs and narrow joints from 4 mm.
- water impermeable
– especially suitable for balconies, roof terraces and sealed surfaces
- very high elasticity for bonded joints
– up to 30% less expansion joints needed throughout the surface in comparison to cement based grout
- jetwasher proof and highly resistant to chemicals
– easy to clean and specially suitable for pool surroundings
- very economical
– up to 25% more joints can be pointed in comparison to other cementitious mortars
- creamy mortar consistency
– also very suitable for vertical joints
|dark grey||4 kg||860106804|
A stable, load-bearing, levelled surface resp. a surface with an inclination of at least 1.5% – 2% consisting of glazed ceramic tiles. Joint depth ≥ 30 mm (bonded conctruction ≥ 20 mm). Joint width continuously ≥ 4 mm, max. 8 mm. Outside and surface temperature min. 10°C to max. 25 °C.
In order to evaluate the colour match of the mortar and the flags, slabs or tiles we strongly recommend to create a test area first.
Clean the surface thoroughly of all dirt, cement residues, vegetation, organic material or other contaminants. Keep wash box, vdw sponge board and smoothing trowel (also see vdw accessories) ready and fill the wash box with fresh and cold tap water. Do not prefill the joints!
Fully saturate the surface of the paving with the sponge. Take the viscose sponge with velcro from the bucket first, fix it to the vdw sponge board and prewet the surface with the complete sponge board. To do so please dip the vdw sponge board including sponge into the water in the wash box and squeeze it over the role-top of the wash box. Do not use a hose for prewetting!!!
Mixing the joint mortar:
Pre-mix the aggregate, then add the binder and mix thoroughly with a suitable tool (drill and spherical paddle mixers) until homogeneous. No water should be added to the mix.
Filling the joints:
Apply immediately after mixing by working into the joints with the smoothing trowel (by using a flat angle between the smoothing trowel and surface the mortar can be stuffed into the open joint. Using a steep angle between the smoothing trowel and surface mortar residue can be removed). Continuously fill up the joints with the complete mixed content of the bucket. Avoid any cavities within the mortar when jointing. Please make sure to only use appropriate joint boards for epoxy resins. Joint boards with foam rubber are not suited for the jointing of vdw 860 mortar for slabs and ceramic tiles 2-components.
Immediately after incorporation of the mixed amount of mortar, this part of the surface can be washed off. The washing process should be done in two steps. Firstly the surface will be wiped with the damp sponge board in a circular motion. During this process the surface of the joints can be smoothed and modeled and possible irregularities can be compensated. In between that, immerse the sponge board into the wash box and press it gently over the rollers. In case of very strong mortar adhesion the sponge can be wrung out by hand in the wash box or cleaned with a water spray jet.
Secondly the residues of the first wiping are removed from the surface. Please use the damp sponge board and clean the surface diagonally to the joints and absorb the last residues. Dip the sponge board into the wash box and squeeze over the rollers after each wipe.
Important: each bucket of vdw 860 mortar for slabs and ceramic tiles 2-components contains a new sponge pad. Please make sure to use this new sponge pad with each new bucket. Only by doing so an absolutely clean surface can be guaranteed.
The following points apply to a temperature of 20°C and 65% relative humidity (high temperatures shorten and low temperatures lengthen the curing period). Cordon off the freshly jointed areas for a period of at least 24 hours. The area can then be made accessible to limited pedestrian traffic. The area can be fully released to vehicular traffic after 3–5 days, when completely hardened. In principle, a strength test should be carried out before putting into service. In order to avoid blooming of the joints it is advised to ensure rain protection for the next 12 hours.
Anyway, please follow our detailed technical hints for the application of our products which are available free of charge. Subject to technical changes. When in doubt, please contact us. Our general conditions of sale apply.