Description
MAIKA SELF-LEVELLING COMPOUND 20KG MK72O
DESCRIPTION
MK72O is an advanced cement and polymer based levelling and smoothing compound.
It is formulated for experienced commercial contractors to smooth and level large commercial and retail areas. Once dry, it is suitable for the application of vinyl, carpet and tile floor finishes. Unlike normal hydration levellers, MK72O will harden and dry at temperatures down to 1O°C.
PRODUCT PROPERTIES/BENEFITS
Plastic dry cement mortar with finely graded fillers. When mixed with water, it produces a hydraulic-setting smoothing compound with good flow properties and high coverage.
COMPOSITION
Special cements, mineral fillers, polyvinyl-acetate-copolymers, flow agents and additives.
• Super smooth — requires no sanding
• Versatile —apply 2mm to 3Omm in one application
• Rapid hardening — walkable from 2 hrs
• Superior flow — fast application
• Flexible — hand mix or pump application
INSTALLATION NOTES
MK72O can be applied from 2mm to 3Omm thickness in one application.
SUBSTRATE PREPARATION
The substrate must be sound, load-bearing, dry, free from cracks and free from materials (dirt, oil, grease) that would impair adhesion. Cement and calcium sulphate screeds must be abraded and vacuumed. Test the substrate in accordance with applicable standard or notices and report any deficiencies.
Any adhesion-reducing or unstable layers, e.g. release agents, loose adhesives, compounds, covering or paint residues, etc. must be removed, e.g. by brushing, abrading, grinding or shot-blasting. Thoroughly vacuum loose material and dust. Use a suitable primer according to the type and condition of the substrate. Allow any primer that is applied to dry completely.
The datasheets for other used products have to be observed.
APPLICATION
1.Put 4.4-4.8 litres of cold clean water into a clean container. Sprinkle in the sack contents (2Okg) whilst stirring briskly and mix to a thick, fluid, lump-free consistency. Use a drill or mixer fitted with a mixing paddle. Do not mix too thinly.
2.Pour the mixture on the area to be applied, spread the material uniformly to the required thickness using a toothed rake. Use a spike roller to remove any trapped air.
3.Drying time at 2O°C is approx. 24 hours. Abrading using 40-60 grit sanding paper improves both the surface quality and the absorbency. Poor air-flow and lower temperatures will significantly affect drying times.
IMPORTANT NOTES
• Shelf-life up to 6 months in original packaging and in dry storage conditions. Tightly seal opened packaging and use the contents as quickly as possible.
• Best applied at 18-25°C, floor temperature above 15°C and relative humidity below 75%. Low temperatures and high humidity may delay setting, drying and readiness for covering. High temperatures shorten the working time. Therefore, use the coldest possible mixing water during the summer.
• Protect freshly smoothed surfaces from draughts, direct sunlight and influences of heat.
• The product should be protected against frost and direct light during transportation, storage and application.
• Application temperature should not be lower than 5°C.
• Can be pumped with continuous, forced-action mixer pumps, e.g. from manufacturers such as m-tec, P.F.T. and others.
• The substructure of wooden floors must be dry to prevent damage due to dampness through rotting or mould formation. Adequate ventilation or rear-ventilation must be provided especially when installing impermeable flooring,
e.g. by removing the existing expansion strip or by installing special skirting with vent openings.
• Minimum thickness for resistance of castors is 1 mm. On non-absorbent substrates such as old screeds with closed, fixed, waterproof adhesive residues, a thickness of2-3 mm must be used.
• When applying in several coats, allow the compound to dry completely. Then apply non porous primer as a intermediate primer and leave to dry, before applying subsequent coats.
• The minimum thickness below wood flooring is 2 mm. Pay particular attention to a sufficient drying of the levelling compound prior to installation of wood flooring.
• Cement-based compounds tend to form cracks on soft or tacky substrates. These soft and tacky layers must therefore be removed as much as possible before applying the compound. Leaving such compounds open for too long also promotes such cracking and should therefore be avoided.
• Do not use as a screed or as a wear surface, a surface covering must always be applied.
• Compounds must not enter between insulation and heating pipes because of the risk of corrosion. This applies in particular for heating pipes made from galvanized steel. Insulation may only be cut off after smoothing.
• Follow the generally acknowledged rules of the trade and technology for the installation of wood flooring and floor covering in respective of the applicable national standards (e.g. EN, DIN, OE, SIA, etc.)
PROTECTION OF THE WORKPLACE & ENVIRONMENT
Contains cement low in chromate acc. Regulation (EC) No 1907/2006 (REACH). Keep out of reach of children. Keep children away from fresh product / installation material. Store in a dry and cool place. Once opened, immediately close packaging tightly. Wear nitrile impregnated cotton gloves and long trousers. During mixing wear a suitable dust-mask and goggles. Thorough ventilation must be ensured during and after the installation and drying time of the product. Drinking, eating and smoking are prohibited during the installation. In case of eye contact, wash immediately with plenty of water and seek medical attention. Avoid prolonged skin contact with the product. After skin contact thoroughly rinse with water immediately.The longer the freshly mixed product remains on the skin, the greater the risk of serious skin damage. Do not allow dispersal into drains, sewers or ground. Rinse tools with water and soap immediately after use. Presents no physiological or ecological risk when fully cured. Basic prerequisites for best possible indoor air quality following floor covering work are conformity to standards of the working conditions, as well as thoroughly dry substrate, primer and smoothing compound.
DISPOSAL
Where possible, collect product residues and re-use. Do not allow to get into drains, sewers or ground. Empty paper packaging is recyclable. Collect waste product, mix with water, allow to harden, then dispose as Construction Waste.