Massetto Ktech
Lightweight screed mix.
Lightweight concrete mix based on hydraulic binders, selected aggregates compliant with UNI EN 13139 (aggregates for mortar) and lightweight mineral aggregates, very low in volatile organic compounds (VOC) and fully recyclable at end of life, for insulating screeds in residential buildings, in thicknesses above 50 mm.
Massetto Ktech is extremely workable and spreads easily and effortlessly in thicknesses above 50 mm, either bonded to the subfloor or as a floating screed. 24 hours after laying it is very cohesive and walkable, and after 2-3 weeks its residual moisture is below 3.5%. Ceramic tiles can be laid after 5 days, and wood, carpet or absorbent natural stone after 2-3 weeks.
Massetto Ktech gives the floor:
- an excellent balance between density and mechanical strength;
- complete freedom in the choice of floor finish;
- no extra load on the floor structure in structural strengthening work combined with reinforced concrete toppings.
Other features:
- suitable for both indoor and outdoor use;
- 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;
- 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;
- compared with traditional screeds, it limits the load on existing floor structures and/or adds no extra load after floor strengthening work;
- fully disposable and recyclable at end of life.
Massetto Ktech is used for lightweight screeds, both under roof tiles and on intermediate floors in residential buildings, on mixed stone, timber or hollow-block floors, more than 50 mm thick. It is also ideal for sloped or leveling screeds, within the minimum thicknesses stated.
Massetto Ktech is spread directly on the floor structure, an existing screed, a cellular or thermal insulating screed or insulation boards, either bonded or "floating" on polyethylene or similar separating membranes, wherever thicknesses above 50 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:
- Lightweight patching or repair screeds over existing hydraulic binder screeds, more than 50 mm thick (if unbonded) or more than 30 mm thick (if bonded with a primer or RALLK Kerasiv K Flex);
- Lightweight screeds on even concrete or brick substrates, more than 50 mm thick (if unbonded) or more than 30 mm thick (if bonded with a primer or RALLK Kerasiv K Flex);
- Lightweight sloped screeds on brick roof decks, existing hydraulic binder screeds, concrete or even brick substrates, more than 40 mm thick;
- Lightweight screeds on timber floors, more than 50 mm thick.
RALLK Massetto Ktech declaration of performance
Safety data sheetsRALLK Massetto Ktech safety data sheet
Technical data sheetsRALLK Massetto Ktech technical data sheet
CE marks FlyersNo documents of this type are available for this product.
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