Kerakoll Keralevel Eco LR Levelling extended information
What are the areas of application for Kerakoll Keralevel Eco LR?
Levelling correction of irregular and uneven substrates, with rapid setting and drying and compensated shrinkage. Thicknesses from 1 to
25 mm.
What are the compatible adhesives?
- Gel-adhesives, mineral adhesives, single- and two-component organic mineral adhesives
- reactive-epoxy and polyurethane, single and two-component cement-based adhesives, dispersed in water or solvent solutions.
What are possible covering materials?
- porcelain tiles, ceramic tiles, klinker and cotto of all types and formats
- natural stone, recomposed materials, marble
- hardwood floors, rubber, PVC, LVT, vinyl, linoleum, textiles
- varnishes and paints
What substrates can be used with Kerakoll Keralevel Eco LR?
- cement plasters and cement-lime mortar
- mineral screeds made with Keracem Eco Pronto, Keracem Eco Prontoplus, Rekord Eco Pronto and Keracem Eco as a binder or pre-mixed
- cement-based screeds
- prefabricated concrete or fresh concrete
- castings
- walls in concrete blocks or cellular concrete
- residual traces of cement-based adhesives
Flooring and walls, for internal and external use, in domestic, commercial and industrial applications, underfloor heating systems.
Do not use on gypsum-based plasters and anhydrite screeds without applying Kerakoll Primer A Eco water-based, eco-friendly, surface insulation, following the instructions provided; on highly flexible substrates and substrates subject to high thermal expansion, and on plasterboard; on wet substrates or substrates subject to continuous moisture rising.
How to use Kerakoll Keralevel Eco LR Levelling?
How to prepare the substrates?
- In general, substrates must be free of dust, oil and grease, free from any moisture rising, with no loose, flaky or imperfectly anchored parts such as residues of cement, lime, paint coatings and adhesives, which must be completely removed. The substrate must be stable, non- deformable, without cracks and have already completed the curing period of hygrometric shrinkage.
- Low-absorption substrates: smooth substrates with very low absorbency level or which are completely non-absorbent, such as ceramic tiles, marble floor tiles, epoxy and wall paints, residual traces of oxidised adhesives and smoothed concrete coatings which are compact and properly anchored, must be prepared by means of mechanical abrasion or by application of Keragrip Eco, the water-based, eco-friendly adhesion promoter, following the instructions for use and after having carried out thorough cleaning of the surface. Any substances used for surface treatment, such as wax or parting compounds, must be removed mechanically or using specific chemical products.
- High-absorbency substrates: on screeds and plasters which are compact but very absorbent, first Primer A Eco, eco-friendly, water-based surface isolation, in order to reduce and regulate the level of absorption. In the case of absorbent substrates with weak consistency, apply Keradur Eco eco-friendly, water-based deep consolidant. Respect the indicated waiting time before carrying out correction of the surface with a levelling product.
How to prepare Kerakoll Keralevel Eco LR Levelling?
Prepare Kerakoll Keralevel Eco LR in a clean container, first of all pouring in a quantity of water equal to approximately ¾ of the amount required. Gradually add Kerakoll Keralevel Eco LR to the container, mixing the paste with a low-rev (≈ 400/min.) helicoidal agitator. Add more water until the desired consistency is obtained. The mixture must be of smooth consistency and without any lumps. For best results, and to mix larger quantities of levelling product, a stirring device with vertical blades and slow rotation is recommended. Specific polymers with high-dispersion properties ensure that Keralevel Eco LR is immediately ready for use. The amount of water to be added, indicated on the packaging, is an approximate guide. It is possible to obtain mixtures with consistency of variable thixotropy according to the application to be made. Adding extra water does not improve the workability of the product, and may cause shrinkage in the plastic phase of drying and result in less effective final performance with a reduction in surface hardness, compressive strength and adhesion to the substrate.
How to apply Keralevel Eco LR?
Apply a first layer of the product to the suitably prepared and damped substrate using a smooth trowel. Press down hard to ensure adhesion and to force the air out of the pores, after that, the thickness can be adjusted as required. In the event of high thicknesses apply in more layers until the required thickness is obtained. For limited restorations it is possible to work in a single layer, thanks to the high thixotropic effect of the mixture. The appearance of the surface finish may vary depending on whether a smooth steel trowel or a sponge has been used for application. For subsequent laying of ceramic tiles it is always advisable to obtain a roughened, porous surface.
How to clean residual traces off?
Residual traces of Kerakoll Keralevel Eco LR can be removed from tools using water before the product hardens.
NB
- Joints: all the joints located in the substrate must be respected. Deformable substrates: for substrates that are liable to movement, apply the eco-friendly Kerakoll adhesion promoter suitable for the type of substrate, following the instructions for use; embed to the substrate a 4×5 mm anti- alkali mesh; mix Kerakoll Keralevel Eco LR with ≈ 2.4 ℓ of
Keraplast Eco P6 latex and ≈ 2.4 ℓ of water. - Gypsum-base plasters: must be dry and prepared with the Primer A Eco eco-friendly, water-based surface insulation, following the instructions for use.
- Calcium Sulphate screeds: must be dry and sanded as specified in the manufacturer’s instructions, then prepared with water-based, eco-friendly surface isolation Kerakoll Primer A Eco, following the instructions for use.
- Large continuous surfaces: continuous, extensive surfaces need to be separated with elastic joints so as to create areas of ≈ 50 m2. In order to improve adhesion to the substrate and insert an anti-alkali mesh with 4×5 mm mesh size, it is recommended, before laying the product, to apply Kerakoll Keragrip Eco, the eco-friendly adhesion promoter, following the instructions provided.
- Laying hardwood floors: for subsequent laying of hardwood floors, create a smooth finish with thickness ≥ 3 mm.
Kerakoll Keralevel Eco LR Levelling technical data
Apparent volumetric mass | ≈ 1.45 kg/dm3 | UEAtc/CSTB 2435 |
Mineralogical nature of inert material | silicate - crystalline carbonate | |
Grading | ≈ 0 – 600 µm | UNI 10111 |
Shelf life | ≈ 12 months from production in the original sealed packaging, protect from humidity | |
Pack | 20 kg bags | |
Mixing water | ≈ 4.8 ℓ / 1 bag 20 kg | |
Specific weight of the mixture | ≈ 1.62 kg/dm3 | UNI 7121 |
Pot life | ≥ 20 min. | |
Temperature range for application | from +5 °C to +30 °C | |
Maximum thickness | from 1 mm to 25 mm | |
Foot traffic | ≈ 2 hrs | |
Waiting time before laying: | ||
- ceramic tiles, terracotta | ≈ 2 hrs | |
- hardwood floors, resilient materials and natural stone | ≈ 12 hrs | |
Coverage | ≈ 1.3 kg/m2 per mm of thickness |
Kerakoll Keralevel Eco LR Levelling performance data
HIGH TECH | ||
Adhesion to concrete after 28 days | ≥ 1 N/mm2 | EN 13892-8 |
Resistance to: | ||
- compressive strength after 28 days | ≥ 25 N/mm2 | EN 13892-2 |
- flexural after 28 days | ≥ 6 N/mm2 | EN 13892-2 |
- abrasion after 28 days | ≤ 250 mm3 | EN 12808-2 |
Surface hardness after 28 days | ≥ 30 N/mm2 | EN 13892-6 |
Conformity | CT – C25 – F6 | EN 13813 |
Limitations
- Product for professional use
- abide by any standards and national regulations
- do not use Kerakoll Keralevel Eco LR for levelling purposes or for the correction of substrate irregularities greater than 25 mm
- do not add other binders or additives to the mixture
- low temperatures and high relative humidity lengthen drying times an excessive quantity of water will reduce strength and the drying time
- before laying hardwood floors and resilient materials, check residual moisture with a hygrometer
- protect from direct sunlight and currents of air for the first 12 hrs
- respect the elastic joints present in the substrate
- if necessary, ask for the safety data sheet
- for any other issues, contact the Kerakoll Worldwide Global Service 01772 456 831
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