NBS Source
One Part Flexible Grey Adhesive

Application

  • Designed for use on both walls and floors in internal, external and total immersion locations.
  • It is ideal for use in heavy duty areas such as swimming pools, commercial showers and locations which may be subjected to thermal variation. Its long pot life also makes it ideal for use in hot climates.

Description

A highly polymer modified cement-based powder adhesive. The high polymer level of the adhesive means that it only needs to be mixed with water to achieve the flexibility, water resistance and increased strength usually only obtained by the addition of separate polymer admixtures.


Features and benefits:

  • Fully vitrified/ porcelain/ dark natural stone tiles.
  • Built-in flexibility.
  • Internal and external.
  • Underfloor heating.
  • Plywood overlay.
  • Water resistant.
  • High bond strength.
  • Non-slip.
  • BS EN 12004 C2T.

General information

Color

Grey

Material

Cement

Shape

Formless

Uniclass 2015

Pr_20_31_02_12 Cementitious adhesivesPrimary

CAWS

M40/10 Natural stone covering to

M40/110 Tiling to

M40/115 Natural stone covering to

M40/120 Mosaic to

Specification data - Cementitious adhesives Enhanced data

Colour

Grey.

Fire resistance

Class E.

Material

Cementitious adhesive with Rock-Tite™ polymeric binders.

Standard

To BS EN 12004, class C2T.

Setting time

At 20°C:16 to 24 hours.

Coverage

Walls: approximately 3kg/m² and floors: approximately 4kg/m².

Thickness (bed depth)

2–6 mm, 12 mm in small areas.

Preparation

All surfaces should be dry, clean and strong enough to support the tiles to be fixed. Tiling substrates should be true and flat to permit fixing without visible lipping of tile edges. On floors, any gaps exceeding 3mm under a 2 metre straight edge should be corrected using a suitable Norcros Levelling Compound.


This will be particularly appropriate where larger tiles or those with rectified edges are being installed. Porous or dusty surfaces must be sealed using Norcros Prime Bond diluted 1:4 with water.

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Application method

Using a suitably notched trowel spread the adhesive onto the fixing

surface to form parallel ribs into which the tiles should be applied with a firm twisting action. Spread only enough material that remains workable and as such fully wets out on the tile backing. Solid-bed void-free fixing will be necessary on floors and in wet areas. Tiles with deeply keyed back profiles may need to be back buttered. The adhesive is designed for thin bed fixing up to 6mm although in isolated areas it can be bedded out up to 12mm in thickness. Tiles may be grouted as soon as the adhesive bed is set. Do not use below 5°C.

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Background

In wet areas or those of intermittent wetting such as shower areas, moisture sensitive backgrounds such as plaster should be waterproofed using Norcros Wet Seal Tanking Membrane.

Concrete/ cement: sand screed, cement: sand render, anhydrite & hemihydrite (gypsum) screeds, heated floors (dense construction), thermoplastic floor tile/ vinyl sheet, asphalt (internal only), gypsum plasterboard, gypsum plaster, glazed surfaces and plywood overlay onto existing timber floors.

Digital objects

Platform Compatible Version Certified to
IFC

IFC2X3

6

1.3
Revit

Revit 2016

6

2.0
Download now from NBS National BIM Library

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