Uni-Cote Hi Fibre Render
(For high build, high impact Uni-EIFS™ coatings)

Hi Fibre Render™ is a trowel-applied or spray machine applied high build, lightweight render suitable for a one-coat or two-coat application on Uni-IB Board (expanded polystyrene foam). Hi Fibre Render is formulated with short-length synthetic fibres which, on application, cross-link to provide a reinforced render.

Hi Fibre Render is a cement-based polymer modified, High Performance, Water Resistant and Adhesion Promotion render system. Hi Fibre Render is applied direct to Uni-IB Board or Uni-Base Board, either mechanically (sprayed) or by Trowel and rubbed up to a true and even surface. This product is workable at thicknesses from 5 mm up to approximately 10 mm. A minimum curing time of 24 hours between coats is required.

Hi Fibre Render is supplied in ready-to-use 14kg bags.

Approximate coverage per bag is 1-2m², which is dependent on required thickness.

Condition of Substrate
Before application of any render the surface of the substrate must be clean, dry and free of any debris or dust.
Note: Bare polystyrene should not be left exposed to sunlight for longer than one week.

The dry substrate surface must be cleaned free of any grease, oils, scaling laitance, efflorescence, form-oil compounds, mould, fungi, dirt, wind blown dust, degraded polystyrene crystal dust or any other foreign matter.

It is the responsibility of the Builder or Head Contractor to make good any substrate before the render is applied. Contact Unitex for advice or site visit by our representatives.

Adequate expansion joints are required to minimise cracking on the surface of the render. Location of the expansion joints is also the responsibility of the Builder or Head Contractor. Unitex® recommends expansion joints to every elevation and between different substrates, to allow for building movements and or stresses. Ideally, expansion joints should be at all penetrations to wall surface.

If such expansion joints are not provided by the Builder or Head Contractor, cracking due to movement of the substrate may occur. This is in no way indicative of faulty material. Rather it indicates sub-standard building practice.

Adding Water
Uni-Cote Render™ products are dry powder-based products. This means that you are getting a 100% active product. All that is required is for clean water to be mixed in, on site, immediately prior to application to the substrate.

The recommended starting point is to add approx. 25% by volume, (based on the amount of powder render to be used), of water into a clean container (approx 4.5 litres per bag). Then slowly add the powder, with drill mixing, until the desired slump (consistency) is achieved.

Hi Fibre Render should be left a minimum 72 hours after application and wait until fully cured before overcoating with a texture from the Unitex Applied Finishes range.

Uni-Cote Hi Fibre Render:

• Recommended over Uni-IB Board (min 10 mm)
• Trowels on easily, smoothly and thickly
• High build in a single pass
• Is polymer-modified for strong adhesion to surface
• Just Add Water  - less margin for errors
• Consistent quality
• High impact resistant

1. Add the contents of the bag slowly to 4 litres of water (25% volume of entire bag) with vigorous drill mixing to ensure a lump free render of required slump.
2. The mix can be later water thinned to required viscosity.
3. Ensure wall surface is stable, clean, dry and free of dust, etc prior to application.
4. For difficult masonry and non-masonry surfaces contact Unitex for product and surface preparation advice.