Quick Render High Build Non-Combustible is Rockcote’s newest innovation, designed for projects that demand fire compliance, performance, and practical usability all in one solution.
With building codes tightening and industry expectations shifting, render systems now play a crucial role in helping prevent and slow the spread of fire. This product was developed to help applicators meet those requirements without sacrificing ease of use.
Fully certified, this high build render is lightweight, easy to apply and engineered to level out uneven surfaces in a single coat up to 30 millimetres. Whether you’re working on commercial façades or residential developments, it’s designed to save time and reduce stress on both the wall and the applicator.
We sat down with Phil Rogers, Rockcote’s Technical Sales Manager, to learn more about the story behind the product, how it’s different from other alternatives in the market, and what it means for applicators on-site.
What led to the development of Quick Render High Build Non-Combustible?
There’s been a growing industry demand for non-combustible systems and for good reason. After major global incidents like the Grenfell Tower fire, where flammable cladding contributed to the rapid spread of fire, regulations have changed to reduce fire risk and slow down the spread of fire across building facades.
The National Construction Code (NCC) now requires the use of non-combustible materials for external walls, including the render, texture and coating systems. And for a product to be truly non-combustible, it needs to pass AS1530.1 combustibility testing, one of the toughest standards around.
Quick Render High Build Non-Combustible was designed to meet today’s fire safety requirements and developed to give applicators and specifiers a reliable, compliant solution that doesn’t compromise on performance.
How is this different from other renders on the market?
The biggest difference is how much this product can do in one coat: Rockcote High Build Non Combustible Quick Render has been formulated to provide a reliable solution for leveling uneven surfaces that require builds from 5mm – 30mm in a single application.
Compared to traditional cement renders, Rockcote High Build Non-Combustible Quick Render is less than half the weight, which makes a big difference on-site. It’s easier to mix, easier to trowel, and more comfortable to float and finish.
The lightweight nature of this render displays minimal shrinkage, superior adhesion, great workability and excellent “sag” resistance. Use it as the base for Rockcote’s non-combustible systems to ensure full compliance and long-term peace of mind.
What has the feedback been like from applicators?
The response has been really positive, especially from renderers who’ve used it in early project applications and trials.
Applicators have responded really well to Rockcote High Build Non-Combustible render thanks to how smoothly it spreads, how little it shrinks, and how quickly it dries — depending on the weather and surface. They also appreciate the generous build it offers in a single coat.
What kinds of projects or substrates is it best suited for?
Rockcote High Build Non-Combustible Render is designed to be versatile, so it works across a wide range of projects, from commercial builds and apartment complexes to residential homes.
Substrate-wise, it adheres well to properly prepared:
- Brick and block
- Off-form concrete
- AAC blocks and panels
- Core-filled fibre cement sheet
- Core-filled PVC systems
It’s suitable for both interior and exterior use, which gives contractors and specifiers a lot of flexibility when designing or tendering for fire-compliant wall systems.
Why is it important to use this as part of a full Rockcote system?
While this product is a strong performer on its own, it’s engineered to work as part of a full Rockcote non-combustible system.
That means when you use this render with compatible Rockcote textures and coloured finishes, you’re ensuring not just compliance, but warranty coverage, system compatibility, and long-term performance.
Using the full system means each layer is tested and proven to work together. That protects your workmanship, your client’s investment, and helps avoid any surprises later on. It also means you’re covered under Rockcote’s warranty when the products are applied according to specifications.
The benefits of a lightweight formula for applicators
Traditional renders can be heavy and take a toll on the body, especially during high-build jobs. Rockcote’s High Build Non-Combustible render is made using a blend of lightweight natural fillers, low weight additives and advanced polymers, which keeps the weight down without affecting performance.
The lightweight formula offers real benefits for applicators, including:
- Less stress on your shoulders, elbows, and wrists
- Faster application times, with less effort
- No sagging or slumping on the wall
- Quicker finishing and fewer reworks
- Excellent adhesion
It’s not just about making life easier for the renderer, it also helps reduce labour hours and scaffolding costs, which is a big win for project managers and site supervisors.
The smart choice for modern builds
Quick Render High Build Non-Combustible is a smart, site-ready solution for modern fire-rated builds. It’s light, it’s strong, it levels beautifully, and it plays a key role in helping teams meet strict compliance standards without slowing down progress on-site.
If you’re working on a project that requires non-combustible systems, this new release from Rockcote is well worth considering.
To find out more about Rockcote’s new Quick Render High Build Non-Combustible, visit the product page or get in touch with our specialised team.