Uni-Base Board Render

Uni-Base Board Render™ is specially formulated to be a low-build, strongly-adherent render on the pre-coated Uni-Base Board. Together with the other Unitex components, Uni-Base Board Render is an integral part of the Uni-Base Board low-build, external insulating cladding system; another member of the Uni-EIFS™ range. Uni-Base Board Render is trowel-applied and suitable for a one-coat or two-coat application on Uni-Base Board.

Uni-Base Board Render is a cement-based polymer modified, High Performance Water Resistant and adhesion promoting render system. This product is workable at thicknesses up to approximately 4-5 mm.

Uni-Base Board Render is supplied in ready-to-use 20kg bags.

Approximate coverage per bag is 3-5m².

Uni-Base Board Render, when dry and fully cured, is overcoated with any of the range of Unitex Roll, Trowel or Brush Applied Texture coating systems. This completes the Uni-Base Board insulating system, from the Uni-EIFS range.

Condition of Substrate
Before application of any render the surface of the substrate must be clean, dry and free of any debris. This means that any loose or damaged substrate must be removed, or patched and made good, prior to application of the base render.

The substrate surface must be cleaned free of any grease, oils, scaling laitance, efflorescence, form-oil compounds, mould, fungi, rust, dirt, 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. Then slowly add the powder, with drill mixing, until the desired slump (consistency) is achieved.

Uni-Base Board 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-Base Board Render:

• Trowels on easily, smoothly and thinly
• Is polymer-modified for strong adhesion to surface
• Is more water resistant than conventional render
• Just Add Water - less margin for errors
• An integral component in the Uni-Base Board EIFS system

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.