Sivit Stone 1,2 cm
Pedestrian-Grade Drainage Screed
A screed based on aliphatic, non-yellowing polyurea resins, combined with colored pebbles.
Preliminary Check and Mechanical Surface Preparation
- Verify that adequate slopes are present to ensure proper drainage of the pavement.
- Concrete substrates must be solid, level, absorbent, and free from oils, detergents, dust, or other contaminants. For newly cast screeds, allow for standard curing times.
- Clean all existing joints, which must be reopened and sealed once the pavement is finished.
- Mechanically prepare the surface using an orbital grinder equipped with diamond abrasive tools, followed by thorough dust removal with an industrial vacuum.
- Mark the area to be coated using perforated profiles with a height equal to the desired final thickness.
- Highly absorbent or powdery surfaces should first be treated with a roller-applied layer of PAVIWATER T68 diluted 1:3 by weight with water, at a consumption of approximately 0.05 kg/m².
Application
- PRIMER / IMPREGNATION + BROADCAST
Apply a layer of PAVIWATER T68® (A+B) with a roller at a consumption of 0.20 kg/m² (variable depending on substrate absorption), diluted 1:0.5 by weight with water.
Broadcast QUARZO RESINATO B1 while still wet, at a rate of 1.50 kg/m². Remove any excess once cured. - BODY / SCREEDING
Prepare the mix by combining SIVIT STONE binder at 1.20 kg/m², a non-yellowing polyurea resin, with SIVIT PEBBLE at 20 kg/m² — washed and dried natural stone, grain size 2–4 mm. Use a ratio of 6% binder by weight of pebbles and 6% QUARZO RESINATO B1 by weight of the pebbles.
Depending on the required setting time, choose SIVIT STONE PU (single-component) or SIVIT STONE PU FAST (resin + accelerator).
Mix in a concrete mixer for a few minutes until the aggregate is uniformly wet.
Spread the mixture with a trowel and screed. Use metal rods as guides for the screed, with a diameter equal to the desired thickness.
Compact and smooth the surface with a trowel, ensuring no voids or irregularities. To improve trowel flow, clean it with polyurethane solvent; do not use alcohol or water-based products. - FINISH / OPTIONAL COATING
To enhance surface mechanical properties, apply a transparent polyurethane protective layer FINISOL® GEL (A+B) with a roller at 0.3–0.4 kg/m².
To maintain anti-slip properties, incorporate 10% QUARZO RESINATO B1. - JOINT SEALING
Reopen concrete substrate joints using a diamond blade cutter and seal with SIGILFLEX® MS silane elastomer at 0.05–0.06 l/m (for a 6 mm joint).
Curing Time • Full-depth hardening: 7 days
