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Norcros Pro 10 Self Levelling Compound – Pallet Deals and Bulk Buy

Norcros Adhesives

Norcros Pro 10 Self Levelling Compound

Polymer Modified, Self-Smoothing Cementitious Floor Leveller

It’s ready for laying ceramic/porcelain tiles after approximately three hours. Natural stone tiles can be laid after about 24 hours. 20kg will cover approximately five square metres at 3mm thickness.

Norcros Pro 10 is a polymer-modified cementitious floor leveller that is suitable for a variety of substrates, including:

  • 0-10mm
  • Self-smoothing
  • Good abrasion resistance
  • Single part
  • Tile after 3 hours
  • Undertile heating

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Norcros are officialy closed from Friday 17th March 2023. Please contact us for an alternative 0333 344 2655 or info@buythepallet.co.uk

Norcros Pro 10 Self Levelling Compound extended information

Approximate coverage:

Application ThicknessCoverage per 20kg bagApplication ThicknessCoverage per 20kg bag
5mm8m220mm0.75m2
10mm1.5m240mm0.375m2

Restrictions: NOT Suitable for

Total immersion areas. Application in temperatures below 5°c in line with recommendations contained in British Standard 5385 part 3 : 2014, the code of practice for the design and installation of floor tiles.

Norcros Pro 10 is a polymer-modified cementitious floor leveller that is suitable for a variety of substrates, including:

  • concrete
  • cement: sand screed
  • flooring-grade asphalt
  • existing quarry and vinyl tiles

Its excellent levelling and flow properties make it ideal for preparing sub-floors before fixing ceramic, porcelain and natural stone tiles. It is also ideal for encapsulating under-tile heating mats and cables, protecting the heating elements during the tile fixing process as well as providing a level surface for tiling.

Norcros Pro 10 Levelling Compound is a single part, self-smoothing levelling compound suitable for use from 0mm to 10mm in one application without the requirement for additional aggregate. The product is suitable for levelling a variety of substrates including concrete, cement:sand screed, flooring grade asphalt and existing quarry and vinyl tiles. It is ideal to encapsulate undertile heating mats and cables, protecting the heating elements during the tile fixing process as well as providing a level surface to tile to. The excellent levelling and flow properties of the product make it ideal for preparing subfloors prior to fixing ceramic or natural stone tiles. Ceramic and porcelain tiles may be fixed once the leveller is able to receive foot traffic (approximately 3 hours at 20°C). Natural stone may be fixed after 24 hours.

Classification: CT C30-F6.

Its excellent levelling and flow properties make it ideal for preparing sub-floors before fixing ceramic, porcelain and natural stone tiles. It is also ideal for encapsulating under-tile heating mats and cables, protecting the heating elements during the tile fixing process as well as providing a level surface for tiling.

APPROXIMATE TIMES

Bed ThicknessPot LifeSetting Time
3mm - 10mm>30 Mins3 Hours

Note: Pot life/setting times will vary dependent upon temperature on site. Higher temperatures = shorter pot life/set time; lower temperature = longer pot life/set time.

SURFACE PREPARATION General

All surfaces should be dry, clean, free from any contaminants and all barriers to adhesion.

Dusty or porous surfaces should be primed with Norcros Prime Bond diluted 1:4 with water. For impervious backgrounds a slurry bonding coat made of 1 part Norcros Prime Bond to 2 parts Norcros Pro 10 Levelling Compound should be applied to the substrate using a soft brush. Once dry the slurry will provide a key coat onto which the Levelling Compound will form a strong bond.
N.B. It is recommended that not more than 2 layers of levelling compound are used. Always prime the first layer of levelling compound with Norcros Prime Bond diluted 1:4 with water and allow to dry before applying a second layer.

ClassMaximum permissible deviation from a 2m straight edge (mm)Application
SR13mmRecommended for direct fixing of tiles with tile adhesive.

Concrete/ Cement:Sand Screed

New concrete floors must be allowed to dry for a minimum of 6 weeks*.
Before levelling, residual traces of laitance and curing agents should be mechanically removed. Cement:Sand screeds should be a minimum of 21 days old*. Prime using Norcros Prime Bond – see product data sheet for instructions. *If Norcros Permalayer is used, this may be reduced to 48hrs providing the screed is sufficiently strong enough to take foot traffic. – Refer to Norcros Permalayer Product Data Sheet

Anhydrite & Hemihydrite (Gypsum) Screeds

These must be cured to their respective manufacturers directions before tiling can begin.
Before tiling commences, ensure that the substrate is flat (SR1). Generally, anhydrite screeds should be allowed to dry at a minimum rate of 1 day per mm of screed thickness for screeds of up to 40mm thickness and 2 days per mm for any additional thickness over 40mm to achieve a moisture content of no greater than 0.5% w/w or 75% Relative Humidity (RH), however the screed manufacturer should be consulted for their recommendations).
The surface must be free from laitance and any other surface contamination (the surface should be lightly sanded and vacuumed), prime using progressively stronger coats of Norcros Prime Bond as follows: Diluted 1:4 parts water. Allow to dry. Diluted 1:3 parts water. Allow to dry. If still porous a third coat diluted 1:2 parts water should be applied. Allow to dry.

Note: For screeds of 95%RH and below, Norcros Pro Gyp Base Fast Track Sealer may be used. Refer to Norcros Pro Gyp Base product data sheet.

Heated Floors (Dense Construction)

Pro 10 Levelling Compound is suitable for use with underfloor and undertile heating systems. Underfloor heating systems should be turned off and the floor allowed to cool prior to use. On solid floor structures after the installation is completed, the heating should not be switched on for at least 14 days and then brought up to operating temperature gradually (Refer to Norcros How to sheet ‘Commissioning of Underfloor/Undertile Heating Systems’). Undertile heating cables and mats should ideally be encapsulated in a layer of Norcros Pro 10 Levelling Compound. This method prevents damage to the heating elements during the laying process.

Thermoplastic Floor Tile/ Vinyl Sheet

Before levelling commences, ensure vinyl is well stuck down and in good condition it should be thoroughly cleaned and degreased to remove surface dirt using warm water and suitable detergent. Remove all detergent residues using clean water. seal using a neat coat of Norcros Prime Bond. – See Prime Bond product data sheet for further details.

Asphalt (Flooring Grade Only)

Before levelling commences, ensure that the substrate is clean, sound ( not soft or brittle) and with sufficient cohesive strength to support the tiled finish. It should be thoroughly cleaned and degreased to remove surface dirt using war water and suitable detergent. Remove all detergent residues using clean water. seal using a neat coat of Norcros Prime Bond – See product data sheet for further details.

Glazed Surfaces

Tiles must be well fixed and the underlying substrate must be sufficiently strong enough to support the additional weight of the new tiling in addition to the existing tiled installation. Before levelling commences, ensure that the tiles are thoroughly cleaned and degreased to remove surface dirt using warm water and suitable detergent. Remove all detergent residues using clean water. and a slurry bonding coat made of 1 part Norcros Prime Bond: 2 parts Norcros Pro 10 Levelling Compound should be brushed onto the surface and allowed to dry. This will provide a key onto which the levelling compound can bond.

Plywood Overlay onto Existing Timber Floors*

(BS EN 636-3 WBP/Marine Grade Plywood) Internal Only
The timber floor should be constructed to ensure that it is sufficiently rigid and stable to receive not only the additional weight of the tiled installation but any additional static and dynamic load without excessive deflection. All sheets should be a minimum of 15mm to 18mm thick and be screwed down to existing boards and joists with staggered joints at 300mm centres and 150mm centres along board edges. The sheets must be sealed on the back, face and edges with undiluted Norcros Prime Bond.
All timber constructions must be adequately ventilated behind to prevent atmospheric moisture distortion and warpage of the boards themselves.
Beware of some grades of Eastern European and Far Eastern Plywood which may be susceptible to disintegration when wet. Plywood which has been treated/coated may not be suitable to receive a tiled finish as the coating may inhibit adhesion to the board.

*In wet areas or those of intermittent wetting such as shower areas, moisture sensitive backgrounds
such as plaster, Plasterboard and plywood floors should be waterproofed using Norcros Wet Seal Tanking Membrane – refer to product data sheet.

10mm Norcros Pro Bord onto Existing Timber Floors*

The timber floor should be constructed to ensure that it is sufficiently rigid and stable to receive not only the additional weight of the tiled installation but any additional static and dynamic load without excessive deflection. All sheets should be a minimum of 15mm to 18mm thick and be screwed down to existing boards and joists with staggered joints at 300mm centres and 150mm centres along board edges using Norcros Pro Board Washers.

*In wet areas such as wet rooms or commercial showers, al board joints should be waterproofed using Norcros Wet Seal Tanking Membrane – refer to wet seal product data sheet.

MIXING

Into a clean mixing bucket add 4 to 4.2L of cold, fresh water and gradually introduce the contents of the 20kg bag of levelling compound powder. Never use more than the recommended quantity of water as this could lead to excessive shrinkage in the leveller causing it to separate, crack and debond.

Mix the contents until a smooth, lump free consistency is achieved. When using an electric mixer, blend at a slow speed (i.e. under 300rpm).

SETTING OUT

To gauge the floor to be levelled use a 2m straightedge and rotate through 360° noting where any gaps are present between the base and straightedge. Any gaps above 3mm should be chalk marked. In the case of more serious deviations in levels, countersunk screws may be drilled and plugged into the floor at 500mm centres. The screws can be lined up and adjusted to the correct height by placing the straight edge and spirit level across them to achieve plumb markers up to which the compound can be screeded.

NORCROS PRO 10 APPLICATION

Pour the compound onto the floor and trowel out to the desired depth. The product is self smoothing. The compound has a pot life of approximately 20 minutes which will be reduced at high temperatures and extended in cool conditions. Do not use below 5°C. Ceramic & Porcelain tiles can be laid as soon as the product supports weight, i.e. after approximately 3 hours. Natural stone may be laid after 24 hours and soft floor coverings after 48 hours. Undertile heating systems should not be switched on for at least 14 days and then brought up to operating temperature at a rate of 5°C per 24 hours.

NORCROS PRO 10 STORAGE & SHELF LIFE

Store in dry internal conditions away from direct sunlight between 5°C to 25°C. The product has a 12 month shelf life from date of manufacture.

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