Kerakoll Levelflex External – Pallet Deals & Bulk Buy – Rapid‑setting fibre reinforced self levelling compound

Kerakoll Levelflex External further information

Coverage: approx 2.50Kg/m2 per mm of thickness

Application Areas

Intended use:
Self-levelling correction of irregular and uneven substrates, in external and submerged installations, such as external patios and terraces, swimming pools and water features. Rapid setting and drying and shrinkage compensated. Can be applied from 2 mm to 50 mm.

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

Covering materials:
– ceramic, porcelain, natural stone and mosaic tiles
– resins for industrial floors from the Kerakoll Factory range
Substrates:
– mineral screeds made with Keracem Eco as binder or pre-mixed product
– cement-based screeds
– prefabricated concrete or fresh concrete castings

External floors in domestic and commercial applications.

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Kerakoll Levelflex External Instructions

Preparation of substrates

The substrate must comply with current British standards and industry regulations. 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.

In particular, substrates must be treated with a suitable primer as shown in the table below:

Preparation

Pour 3.5 – 4.2 l of clean water into a clean container; then pour in a bag of Levelflex External, while shaking. Mix with a mechanical mixer until a smooth, lump-free and self- evelling mixture is achieved. Larger quantities of Kerakoll Levelflex External may be prepared in suitable mixers. After the first mixing, it is advisable to leave the mixture to rest for approx. 2 minutes and then mix again briefly. Levelflex External features a high degree of self-levelling capacity. 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

Instructions for use

Application
Levelflex External is generally applied with a flooring trowel. Application with a mechanical pump enables homogeneous correcting in a very short time on large continuous surfaces. The use of a spike roller or aeration roller can be used to further improve the surface finish of Kerakoll Levelflex External by removing entrapped air from the mixture.

Cleaning
Residual traces of Levelflex External can be removed from tools using water before the product hardens.

Notes

Joints: perimeter expansion must be allow for in the application of self levelling compounds. Perimiter expansion edging strip must be installed along the whole perimeter of the room, on the walls and on any other vertical elements protruding from the supporting layer. Large and continuous surface areas need to be fractionised as soon as they can withstand foot traffic so to create areas < 100 m2 with 10 m maximum individual size. All movement or expansion joints located in the substrate must be respected.

Overlaying: if an additional application of Levelflex External is required once the initial application has been completed, the first installation layer must first be hardened and ready to accept foot traffic and additional application, this is generally after 3 hours.

The initial layer of Kerakoll Levelflex External must be primed with a neat coat of Kerakoll Primer A Eco prior to subsequent applications.

Kerakoll Levelflex External technical data

Kerakoll Levelflex External performances

NB

Product for professional use abide by any British standards and industry regulations do not use Keraflex Levelflex External to correct substrate irregularities greater than 50 mm in a single coat do not add other binders, additives or pigments to the mixture low temperatures and high relative humidity lengthen the drying time and can saturate the environment; this may have a negative effect on the quality of the surface of the self-levelling product an excessive quantity of water will reduce strength and the drying time respect any movement or expansion joints present in the substrate if necessary, ask for the safety data sheet for any other issues, contact the Kerakoll Worldwide Global Service.