Render
Render is the finishing coat that turns any internal or external facade, whether over AAC, masonry, fibre cement or block work – into a durable, weatherproof and architecturally finished wall.
Big River Group stocks the Unitex® Uni-Dry Cote® render range, including non-combustible options certified to AS 1530.1, in fine sand, sponge and high-build textures to suit different substrates and design outcomes.
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Uni-Trowel Décor™ 333
Fine Sand Finish product from the Unitex® range of Applied Texture Finishes.
Unitex® Aero Render
Unitex® Uni-Dry Cote® Aero Render is certified Non-Combustible and is fully compliant with AS 1530.1.
Unitex® Base Board Render BBR 8.5
Designed for application as a build coat for the Unitex Base Board™ and IB Board systems. Applied at minimum thickness of 5mm. A super lightweight product (8.5kg) and easy to use for most skill levels.
Unitex® Beach Render Non-Combustible
Unitex® Uni-Dry Cote® Beach Render is certified Non-Combustible and is fully compliant with AS 1530.1.Designed for application over clean brickwork and block work
Unitex® Harbour Fine™ Non-Combustible
Unitex® Uni-Dry Cote® Harbour Fine™ is certified Non-Combustible and is fully compliant with AS 1530.1. Designed for application over clean brickwork and block work. It is available as a fine grade render for sponge finishing.
Unitex® HiLite Render™
Unitex® Uni-Dry Cote® HiLite Render™Suitable for all high and very high-build applications over uneven surfaces.
Unitex® Redi Render™ Non-Combustible
Unitex® Uni-Dry Cote® Redi Render™ is certified Non-Combustible and is fully compliant with AS 1530.1.
How to Choose the Right Render
For non-combustible external walls - including BAL-rated bushfire sites and Class 2+ multi-residential buildings where non-combustibility is a code requirement - Unitex® Beach Render, Harbour Fine™ and Redi Render™ are certified Non-Combustible and fully compliant with AS 1530.1.
For application over brick and block work, Beach Render and Harbour Fine™ are specifically designed for clean brickwork and blockwork substrates, with Harbour Fine™ available as a fine grade suited to sponge finishing.
For uneven surfaces or higher-build requirements, HiLite Render™ is suited to all high and very high-build applications, useful where the substrate needs additional levelling before the finish coat.
For decorative texture finishes, Uni-Trowel Décor™ 333 delivers a fine sand finish from the Applied Texture Finishes range, giving a traditional trowel-applied render aesthetic.
Why Specify Render?
Where Is Render Used?
Render is used extensively across residential and commercial construction as the finishing system over masonry, AAC panels, fibre cement sheeting and block work.
In Class 1 residential housing, render provides a seamless, modern facade finish over AAC systems such as MaxiWall or Helix, or over masonry veneer.
In bushfire-prone areas, non-combustible render systems support compliance where the external wall finish itself needs to be non-combustible.
In multi-residential and commercial projects, render offers a cost-effective way to achieve a large, uniform facade finish across the building envelope compared to other cladding-only systems.
Frequently Asked Questions
What is render used for?
Render is a cement-based finishing coat applied over substrates like AAC panels, masonry, block work or fibre cement to create a seamless, weatherproof and architecturally finished facade.
Is render fire resistant?
Several products in Big River’s render range, including Unitex® Beach Render, Harbour Fine™ and Redi Render™ – are certified Non-Combustible and fully compliant with AS 1530.1, making them suitable for projects requiring a non-combustible external wall finish, such as bushfire-prone sites and certain multi-residential buildings.
Can render be applied over AAC panels?
Yes, render is a common finish over AAC systems such as MaxiWall and Helix. Confirm the specific render product’s compatibility with AAC substrates and follow the manufacturer’s application specification, including any required base coats or reinforcing mesh.
What's the difference between the render finishes in the range?
The range covers different textures and build requirements, Uni-Trowel Décor™ 333 gives a fine sand finish, Harbour Fine™ suits sponge finishing over brick/block work, HiLite Render™ suits high-build applications over uneven surfaces, and Beach Render and Redi Render™ are general-purpose non-combustible options.
Does render need to be painted?
Most render systems can be finished with an acrylic or masonry paint system once fully cured, and some render finishes (depending on the product and pigment) can also be left as a tinted, self-coloured finish – check the specific product’s technical data sheet for painting and curing requirements.
Where can I buy render products?
Big River stocks the Unitex® render range, available for pickup or delivery from our trade centres nationally.
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