Description
Kerakoll Proflow MVS Floor Smoothing Compound is a high performance two component smoothing compound with moisture suppressant properties. Free flowing and rapid setting. The advanced formulation offers true Moisture Vapour Suppressant properties from a single, easy to use product. Developed to control the passage of moisture from the substrate, it has a built in moisture vapour suppressant barrier that is effective up to 95% RH whilst maintaining effortless application, with superior smoothing properties and flawless surface finish.
Kerakoll Proflow MVS replaces the potential of 3 product applications to 1 single application. It is designed for self-smoothing adjustment of irregular and uneven substrates, with rapid setting and drying, compensated shrinkage and MVS properties. For thicknesses from 5 to 12 mm.
Kerakoll Proflow MVS can be used with the following covering materials: LVT and design flooring, vinyl, sheet vinyl and safety flooring, mosaic tiles, textiles, rubber, PVC, linoleum, carpet and raised floors.
Kerakoll Proflow MVS can be used on the following substrates:
- Mineral screeds made with Kerakoll Keracem Eco as binder or pre-mixed product
- Cement-based screeds up to 95% RH
- Calcium sulphate-based screeds up to 85% RH
- Prefabricated concrete or fresh concrete castings
- Ceramic floors
- Flooring grade plywood
- Gypsum fibre or fibre-cement panels
- Metal Substrates
- Internal floors in domestic, commercial and industrial applications
Do not use in external applications, or areas that are continually submerged.
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, without cracks and have a functioning DPM within the subfloor. If no DPM is present, a surface epoxy DPM must be applied before installing resilient floor coverings. Kerakoll Proflow MVS can be used to pre-smooth the floor at 95% RH prior to installing a surface epoxy DPM. In particular, substrates must be treated with a suitable primer such as Kerakoll Active Prime Fix, diluted or neat according to the product datasheet, linked below.
Mixing:
Pour the pre-measured 5 l bottle of Kerakoll Proflow MVS liquid into a clean container; then pour in a bag of Kerakoll Proflow MVS, while shaking. Mix with a mechanical mixer until a smooth, lump free and smoothing mixture is achieved. Larger quantities of Kerakoll Proflow MVS 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. Kerakoll Proflow MVS features a high degree of self-smoothing capacity. Adding extra water does not improve its workability, and may cause shrinkage in the plastic phase of drying and result in less effective final performance with a reduction in surface hardness, surface finish, compressive strength and adhesion to the substrate.
Application:
Kerakoll Proflow MVS is generally applied with a flooring trowel, cam rake or pin level. The use of an aeration tool or spike roller can be used but is not required to further improve the surface finish of Kerakoll Proflow MVS, but will work to remove entrapped air from the mixture. If an additional application of Kerakoll Proflow MVS 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 4 hours. The initial layer of Kerakoll Proflow MVS must be primed with a neat coat of Kerakoll Active Prime Fix prior to subsequent applications. In the case of low temperatures and high humidity it is advisable to keep the environment ventilated during application and during the hours immediately following application, in order to avoid the formation of condensation on the surface of the smoothing compound during the setting phase.
Technical Data:
Appearance: grey pre-mixed
Apparent volumetric mass: ≈ 1.21 g/dm3
Mineralogical nature of inert material: silicate – crystalline carbonate
Grading: 0-600 μm
Mixing water: ≈ 5.0 l bottle / 1 bag 20 kg
Specific weight of the mixture: ≈ 2.04 g/dm3 UNI 7121
Self levelling time: ≈ 30 min.
End setting time: ≈ 90 min.
Temperature range for application: from +5 °C to +30 °C
Maximum thickness: from 5 to 12 mm
Foot traffic: ≈ 90 min.
Waiting time before laying: – LVT, vinyl, sheet vinyl, safety flooring and all other resilient floor coverings ≈ 4 hrs, – resins and paint ≈ 12 hrs
Coverage: ≈ 1.333 kg/m2 per mm of thickness
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