vdw 850 plus

vdw 850 plus 2K joint mortar, self-compacting is the top all-rounder among paving joint mortars — workable even at low temperatures and in rain, with almost no binder film. Excellently suited for trafficked surfaces: for jointing natural stone paving, concrete paving and clinker paving on trafficked areas.

• fast, economical and durable jointing
• clean paved surfaces
• water-permeable
• self-compacting
• resistant to suction sweepers
• abrasion-resistant
• high freeze/de-icing-salt resistance
• permanently filled joint
• workable even in rain and at low temperatures
• reduced risk of accidents

Application

Requirements Stable, load-bearing, permanently water-permeable substrate. Joint depth ≥ 30 mm (full joint depth on trafficked surfaces), joint width continuously ≥ 5 mm, surface and outdoor temperature at least 3 °C to max. 25 °C.

Test area With natural stone and concrete paving, contact between vdw 850 plus and the stone surface may cause visual changes. As a general rule, we recommend laying out a test area.

Pre-wetting Pre-wet the surface thoroughly. Always use clean, cold tap water for pre-wetting and cleaning!

Mixing the joint mortar Pre-mix the mineral aggregate–binder mix, then add the liquid binder and mix homogeneously for approx. 3 minutes. No water may be added to the mixture!

Filling the joints Immediately pull the mortar across the entire wet surface with the hard-rubber squeegee and work it intensively into the joints. As flowability decreases, lightly re-wet the mortar with a water spray jet. Keep the surface constantly wet during application. It is advisable to carry out the jointing from the highest to the lowest point.

Sweeping/Cleaning Immediately clean off excess mortar with a water spray jet without washing out the joints. Sweep off the last mortar residues with a damp coconut broom.