UltraLevel K
Fast-hardening self-leveling underlayment.
Very highly flowable mix with strong self-leveling properties and rheoplastic behavior, highly resistant to settling and bleeding, based on hydraulic binders and selected aggregates compliant with UNI EN 13139 (aggregates for mortar), for smoothing new or existing subfloors, indoors or outdoors, to level out widespread or local differences in thickness from 2 to 30 mm.
UltraLevel K is extremely workable: it spreads easily under its own weight and levels effortlessly with a trowel, squeegee or spiked roller, in thicknesses from 2 to 30 mm, bonded to the subfloor. 24 hours after laying it is very cohesive and walkable. Once hardened and dry, it can be finished with ceramic tiles, wood, carpet, linoleum, PVC, absorbent natural stone or mosaic.
UltraLevel K complies with UNI EN 13813 ("screed material and floor screeds") and is CE marked in accordance with current regulations.
Key features:
- high mechanical strength just one day after laying;
- fast hardening after setting (walkable and ready for ceramic tiles 24 hours after laying);
- controlled, compensated shrinkage that prevents cracking and reduces stresses or preloads in the product as it cures;
- excellent bond to concrete, sand-cement screeds and porous, absorbent ceramic coverings, or to non-absorbent ceramic coverings after applying RALLK Primer K;
- excellent thermal conductivity (over low-profile radiant heating systems, it shortens the warm-up time);
- high heat storage capacity;
- excellent compatibility with screeds over radiant floor heating systems, with no need for additives to improve energy performance.
Its other features are high bond strength, no overall shrinkage (reduced and compensated drying shrinkage) and no loss of thickness in the plastic phase, good abrasion resistance, high durability against the weather, no solvents or substances harmful to health, a very low VOC content, non-combustibility and full recyclability at end of life.
UltraLevel K is used for smoothing or leveling layers 2 to 30 mm thick on new or existing concrete slabs, sand-cement screeds, and fast-drying screeds such as RALLK Massetto K RA or similar, with or without radiant heating. Its properties make it ideal when the floor must quickly be walkable and ready for ceramic tiles or, after checking the residual moisture with a carbide hygrometer, for natural stone, wood, carpet, PVC or linoleum. Further layers can be applied once the first has hardened.
UltraLevel K can also be used to smooth existing concrete, terrazzo tile, ceramic or natural stone floors, pretreated with RALLK Primer K if they are non-porous or poorly absorbent.
Summary of the main applications:
- smoothing new or existing sand-cement screeds;
- smoothing fast-hardening, fast-drying screeds such as RALLK Massetto K RA or similar, with or without radiant floor heating;
- smoothing existing ceramic, terrazzo tile or troweled concrete floors pretreated with RALLK Primer K;
- smoothing layer embedding electrical cables or thin pipes, bonded to the subfloor, in low-profile radiant floor heating systems.
RALLK UltraLevel K declaration of performance
Safety data sheetsRALLK UltraLevel K safety data sheet
Technical data sheetsRALLK UltraLevel K technical data sheet
CE marks FlyersNo documents of this type are available for this product.
Solution #65 - Tile-over-tile installation with a supplementary screed.
