Weber - Weber Niv Floor

Weber - Weber Niv Floor

nivedur S

New work
● Cement screeds
● Concrete slabs
● Pre-cast concrete floors
● Underfloor heating or under tile
warming

Renovation
● Existing tiling
● Rigid plastic tiles
● Existing paints (epoxy, polyurethane, acrylic)

Suitable for covering with:
● Tiling
● Carpeting
● Flexible floor coverings
● Parquet flooring
● Certain floor paints

weber.niv floor is compatible with the adhesives used with the coverings listed above.
In situations that will be very humid, such as bathrooms, weber.sys protec tanking system may be applied over weber.niv floor.
High-performance, self-smoothing floor levelling compound (1 – 10 mm)

About this product

weber.niv floor is a high-performance, cement-based, self-smoothing, rapid-drying, levelling compound. It is used for correcting surface irregularities on difficult surfaces, in dry interior situations.

Constraints

Do not use:
on permanently damp floors or floors
with rising damp
on friable or unstable floors
in industrial areas
on exterior floors

Features and Benefits

▲ Manufactured under BSI Quality Assurance Scheme ISO 9001
▲ Rapid drying (may be covered after 4 to 6 hours)
▲ Can built up to 10 mm in depth
▲ Used for difficult substrates
▲ Flexibility to absorb limited movement, e.g. underfloor heating
▲ Excellent spreading characteristics
▲ Provides a very smooth finish
▲ Can be pump fed for large areas as a special application by contractors approved by Weber

Preparation

Switch off any under-floor heating systems at least 24 hours before application.

Substrates should be completely dry, hard, rigid and clean.

Remove any traces of paint, plaster, laitance or other unsound materials. Thoroughly remove all traces of dust by vacuuming or sweeping. Fill in any localised deep holes and allow to dry before applying the levelling compound.

Holes up to 25 mm deep can be filled with weber.niv floor bulked out with 0 to 4 mm sand (2 volumes weber.niv floor to 1 volume of sand). Allow to harden.

Priming is recommended to improve adhesion, reduce air bubbles and prevent suction from the substrate de-watering the leveller. It may not be necessary for medium porosity substrates, but all others must be primed, and the primer allowed to dry, before applying weber.niv floor.

Very porous or slightly porous surfaces should be primed with weber PR360 and allowed to dry for 1 to 4 hours. Anhydrite screeds must be primed with weber PR360. Completely impervious surfaces should be primed with weber PR301 and allowed to dry for 2 to 3 hours.

Mixing

Do not mix if the temperature is outside of the range + 5°C to + 30°C.

Thoroughly mix 5.5 to 6 litres of water per 25 kg bag using a slow speed electric mixer (500 rpm) for at least one minute until a fluid, homogenous paste is obtained.

Care should be taken not to over-water.

Allow the mix to stand for 2 minutes before use, and use within 20 minutes. At higher temperatures this time will be reduced.

Application

Pour the mixed weber.niv floor onto the floor. It is self-smoothing but the thickness may need to be adjusted with a straight edge or float.

Use a spiked roller or float to ensure that any pores are filled and release trapped air. The minimum application thickness is 1mm (3 mm in heavier traffic areas and under tiling). If a second coat is required, apply it as soon as the first coat has hardened.

If more than 24 hours have passed between layers, prime the first layer with weber PR360.

weber.niv floor is not intended as a wearing surface, so the final finishing layer should be applied as soon as possible after drying has completed. If it is to be left for a prolonged period of time, the surface should be suitably protected.

Allowance for movement

Allow for suitable expansion or control joints in screeds or slabs, by following them through the new topping.

ACCESSORIES

weber PR301: approximately 0.2 kg/m2.
weber PR360: approximately 0.2 kg/m2.

Health and Safety

Contains cement.
For full information on Health and Safety, please see inside back cover.

Storage and Shelf life

When stored unopened in a cool, dry place at temperatures above 5°C, shelf life is 12 months from date of manufacture.

Weber - Weber Niv Floor

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Weber - Weber Niv Floor

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