Massetto Kalce
Screed mix based on NHL 3.5 natural hydraulic lime.
Concrete mix based on NHL 3.5 natural hydraulic lime and selected aggregates compliant with UNI EN 13139 (aggregates for mortar), for screeds in residential buildings, with normal working and hardening times, applied in thicknesses above 40 mm.
Massetto Kalce is extremely workable and spreads easily and effortlessly in thicknesses above 40 mm, either bonded to the subfloor or as a floating screed. 24-48 hours after laying it is very cohesive and walkable, and after 15 days its residual moisture is below 2%. Ceramic tiles can be laid after 48 hours, and wood, carpet or absorbent natural stone after 15 days.
Massetto Kalce gives the floor:
- excellent thermal conductivity;
- high heat storage capacity;
- lower thermal inertia than traditional sand and cement screeds;
- excellent compatibility with radiant floor heating systems, with no need for additives to improve workability or energy performance.
Other features:
- no shrinkage or loss of thickness in the plastic phase;
- greater flexibility than traditional sand and cement screeds;
- good abrasion resistance and high durability against the weather;
- contains no solvents or substances harmful to health.
Key features:
- very low VOC content and class A+ under the French VOC – CMR Regulation;
- high elasticity and ease of application, not rigid;
- adds mass and heat storage capacity, but with lower thermal inertia than traditional sand and cement screeds;
- reversible and compatible with historic masonry;
- fully disposable and recyclable at end of life.
Massetto Kalce is used for screeds in residential buildings more than 40 mm thick, including over radiant heating.
It is also ideal for sloped or leveling screeds, within the minimum thicknesses stated.
Massetto Kalce is spread directly on the floor structure, an existing screed, a lightweight screed or insulation boards, either bonded or "floating" on polyethylene or similar separating membranes, wherever thicknesses above 40 mm are possible within the finished floor levels. Any type of flooring can be laid on the hardened, dry screed: ceramic, natural stone, wood, carpet, terracotta, etc.
The main applications are summarized below:
- Patching or repair screeds more than 40 mm thick over existing natural hydraulic lime screeds;
- Screeds on even historic concrete or brick substrates, more than 40 mm thick;
- Sloped or build-up screeds over existing natural hydraulic lime screeds, historic concrete or even brick substrates, more than 40 mm thick;
- Screeds over radiant floor heating with a total thickness of 50 mm or more.
No documents of this type are available for this product.
Safety data sheetsRALLK Massetto Kalce safety data sheet
Technical data sheetsRALLK Massetto Kalce technical data sheet
CE marksNo documents of this type are available for this product.
FlyersNo documents of this type are available for this product.
Solution #47 - Venetian terrazzo (seminato) finish on lime screed.
Solution #49 - Smooth marmorino finish on lime screed.
Solution #52 - Wall junction of an exterior walkway in historic buildings.
Solution #57 - Basement floor restoration in a historic building.
Solution #61 - Repair of cracked historic screed.
No media available for this product.
