KRONOS

PRE-MIXED, MEDIUM/FAST DRYING SCREED

KRONOS is Edilteco's pre-mixed sand-cement screed for high-performance indoor and outdoor floors. It replaces site-batched screed with a consistent product, with controlled shrinkage and medium-to-fast drying that shortens waiting times before laying the floor covering.

Its consistent particle size distribution and cement content prevent volume loss and drying shrinkage. It reaches high strength (C25-F5 to EN 13813) and is suitable over underfloor heating panels, on any slab with or without insulation, and over ISOLCAP and POLITERM® lightweight subfloors.

It is mixed to an earth-damp consistency in a cement mixer, a continuous mixer or by hand (about 2.0-2.4 L (0.53-0.63 US gal) of water per bag). It is walkable after 14 hours and, up to 4 cm (1 5/8 in) thick, can be covered with ceramic after 48 hours, natural stone after 72 hours and wood after 7 days.

NOTE

Bulk density of the powder about 1,570 kg/m³ (98 lb/ft³); grain size 0-4 mm (0 to 0.157 in).
Compressive strength C25 (> 25 N/mm² (> 3,626 psi)); flexural strength F5 (> 5 N/mm² (> 725 psi)) – EN 13813.
Reaction to fire A1fl; thermal conductivity λ 1.35 W/mK (9.36 BTU·in/(h·ft²·°F)) (tabulated, EN 10456).
Mixing water 7-8% (2.0-2.4 L (0.53-0.63 US gal) per 30 kg (66 lb) bag); pot life 45 minutes.
Walkable after 14 hours; can be covered (≤ 4 cm (≤ 1 5/8 in), +23 °C (73 °F), RH 50%): ceramic 48 h, natural stone 72 h, wood 7 days.
Consumption 17 kg/m² per cm of thickness (8.84 lb/ft² per inch of thickness).
Minimum thickness: 3 cm (1.18 in) bonded, 4 cm (1 5/8 in) floating.
30 kg (66 lb) bag; pallet of 48 bags (1,440 kg (3,175 lb)).

PACKAGING

Bonded screeds (from 3 cm (1.18 in)) and floating screeds (from 4 cm (1 5/8 in)), indoors and outdoors.
Screeds over underfloor heating.
Screeds over lightweight insulating subfloors.
Base for any floor covering: wood, ceramic, carpet, resilient.

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