Uni-Marble Grain Texture

Uni-Marble Grain™ is an acrylic bound stone tough, natural coloured aggregate finish. The acrylic bound coloured aggregate pre-mix is applied to smooth substrates in a thickness equal to the particle size of the coarsest aggregate, and then thoroughly rubbed up to yield an even surface.

Uni-Marble-Grain allows for a smooth multi coloured glistening stone effect to enhance the style of especially large concrete structure externals as well as foyers and lobbies. The Uni-Marble-Grain glistening finish converts what would be dull cement structures into interesting fresh marble towers. Both the protective and decorative functions of the Uni- Marble-Grain finish are long term and will normally remain so for the life of the building.  Hence the specifier is provided with a virtually maintenance free coating for the life of the building.

Uni-Marble-Grain protects and decorates new and restores old surfaces such as, interior and exterior walls, balustrades, beams, columns and infill panels as well as entrances and lobbies. Uni-Marble-Grain is suitable for use over brick, cement blocks, fibre cement sheets, aerated concrete and cement render.

Uni-Marble Grain consists of washed and graded granular marble chips of specified size to give the desired texture and natural colour mix. The marble grains are bound tightly together and also adhered to the substrate by a special adhesion promoted acrylic resin.  The resin allows the Uni-Marble-Grain high build film to retain enough flexibility to cope with normal substrate movement yet retain a tough dirt resistant surface effect. 

Uni-Marble Grain is available only in a range of naturally obtainable stone colour finishes. You only see the natural stone. Coverage is approximately 3.5m² per 15 litre pail.

Uni-Marble Grain:

• Biological Resistance:
  Resistance is provided against attack from bacteria and fungi.  This product is a water based acrylic system and offers safe handling and toxic properties.
  
  
• Fire Resistance:
  The full Unitex coating system when subjected to the Early Fire Hazard Tests - Australian Standard AS1 530 Part 3, 1 976 meets the strictest standards.
  
  
• Water Resistance:
  The coating is formulated with a low water vapour permeability factor to allow migration of water vapour from the substrate, but the coating film forms a low permiation barrier to external rain and moisture.

Uni-Marble-Grain exhibits excellent durability and colour retention under all climatic conditions. A minimum protective and decorative service life of 10 years is provided.  Durability under normal circumstances is limited only by the life of the substrate.  Uni-Marble-Grain is self priming due to the excellent wet adhesion properties of the acrylic resin; hence no primer coats are required over acceptable substrates – other substrates will require a primer coat, contact one of our technical representatives for further information.

Application Details

A minimum of 72 hours, under ideal temperate conditions, is required for through-dry (and cure) of the render, when the surface is trough dry the Uni-Marble-Grain may be applied.  The substrate must be clean before applying the Finish coat. Any crumbling, loose or damaged substrate render must be removed and the surface patched and made good prior to coating. All surfaces must be free of grease, oils, dirt and dust. Pre-painted surfaces must have flaking paint wire brushed back to a sound substrate. Unitex recommends a base coat of a pigmented substrate sealer (2 coats) over old renders prior to application of the surface finishes. Some light coloured marble chips, i.e. white, will require a pigmented sealer prior to applying the Uni-Marble-Grain finish.

Application should not be carried out under excessively cold conditions (below 7 °C) or in hot windy conditions (above 32°C).

Site:
Always provide the builder / designer with a site sample of minimum 1m² texture, finish and colour for approval (Unitex advises sign off).