If you’re deciding between acrylic and cement render, the answer is not as simple as picking one over the other.
Cement render has been used in Australian construction for generations. It’s solid, affordable, and works well on brick and masonry. Acrylic render is a modern alternative that’s more flexible, handles movement much better, and holds up in harsh weather.
Here’s how they compare in the areas that actually matter.
What Is Cement Render?
Cement render is a strong wall coating made from cement, sand, lime, and water, applied over brick, concrete block, or stone surfaces. It creates a smooth or textured finish while adding a protective outer layer that helps walls resist moisture, weather, and daily wear.
It sets hard and rigid, which is both its strength and its limitation. On stable masonry in the right conditions, that hardness holds up well for 15 to 20 years. But buildings naturally expand, contract, and shift.
When they do, rigid cement render can develop hairline cracks, especially around windows, corners, and joints. Proper preparation and skilled application go a long way in preventing this.
It works well on commercial facades, retail shopfronts, apartment complexes, boundary walls, warehouses, and brick homes needing an exterior update.
What Is Acrylic Render?
Acrylic render is cement and fine sand mixed with acrylic polymers that give it flexibility and stronger adhesion. It bonds well to brick, concrete, fibre cement, painted surfaces, and other substrates, making it a popular choice for commercial buildings that need a durable finish with a clean, modern look.
What sets acrylic render apart is how well it moves with a building. In Australia, walls expand under intense heat, contract when temperatures drop, and are constantly exposed to UV, rain, and coastal salt air. Acrylic render handles movement far better than rigid cement-only mixes, which helps reduce cracking and extends the finish life.
Done right, acrylic render can last 25 years or more with far less maintenance than cement.
Acrylic forms a tight seal, which makes it less breathable than alternatives like silicon render. On older buildings where walls need to release moisture, that’s worth a conversation before you commit.
Read more: Acrylic vs. Polymer vs. Lime Rendering: Which One’s Best for Adelaide Homes?
Differences Between Acrylic and Cement Render
Here’s how they compare in the areas that matter most on Australian commercial and residential projects.
Flexibility and Crack Resistance
Cement render sets hard and rigid. When walls expand in summer heat, contract in cooler weather, or shift slightly with settling, that rigidity can lead to hairline cracks, especially around windows, corners, and joints.
Acrylic render has added polymers that make it flexible. It moves with the wall rather than fighting it, which is why you see far less cracking.
Winner: Acrylic render handles movements far better
Adhesion
Cement render sticks best to porous masonry, such as brick, concrete block, and stone. On smoother or painted surfaces, getting a good bond takes extra prep work and there’s more risk of failure if it’s not done properly.
Acrylic render sticks to a much wider range of surfaces. It adheres well to brick, concrete, fibre cement, painted walls, and modern lightweight construction materials.
Winner: Acrylic has stronger adhesion and far more surface compatibility
Water Resistance
Cement render gives walls solid protection, but it remains porous without proper sealing or paint. Cracks let moisture in, and once water gets behind the finish, you’re looking at staining, peeling, and long-term damage.
Acrylic render sheds water better because of the polymer content. That extra moisture resistance makes a real difference to how long the finish lasts in coastal or high-rainfall areas like Sydney, Brisbane, and Adelaide.
Winner: Acrylic resists moisture better and has stronger long-term weather protection
Durability and Longevity
Cement render lasts 15 to 20 years on stable masonry when it’s applied correctly and stays crack-free. Once moisture gets in through cracks, that timeline shortens fast.
Acrylic render holds up better against UV, rain, coastal salt, and building movement. On most Australian commercial projects and homes in tough conditions, you’re looking at 25 years or more before needing major work.
Winner: Acrylic has better long-term performance in demanding Australian weather
Finish and Aesthetics
Cement render gives a classic rendered finish that can be smooth, textured, or painted in any colour. It suits classic architectural styles well, but colour always needs a separate paint coat on top.
Acrylic comes in a wider range of textures and integrated colours, so you can skip the paint step entirely if you want. The finish is cleaner, sharper, and holds colour longer thanks to strong UV resistance.
Winner: Acrylic has more design flexibility
Application and Skill Required
Cement render is mixed on site, which means the quality of the mix matters as much as the application. Thickness, consistency, curing, and surface preparation all need to be right to avoid cracking or poor bonding.
Acrylic render comes pre-blended for consistency, but it still needs proper surface prep, base coats, and finishing technique to perform. Not every renderer is equally experienced with acrylic products, so it’s worth checking their track record before you book.
Winner: Neither is suitable for DIY
Cost
Cement render runs $30 to $50 per square metre. That lower price point makes it the go-to on large commercial facades, boundary walls, and projects with tight budgets.
Acrylic render costs $80 to $100 per square metre, but that extra spend pays off with better crack resistance, lower maintenance, and stronger weather performance.
Winner: Cement render is more affordable
Read more: How Much Does It Cost to Repair a Water-Damaged Ceiling in Adelaide? (2026)
Suitability to Australian Conditions
Cement render performs well on solid masonry in stable inland structures. It struggles in coastal areas, on lightweight construction, and anywhere buildings experience significant temperature swings.
Acrylic render is better suited to Australian conditions. It handles heat, strong UV, coastal salt, rain, and natural building movement far more effectively. That extra flexibility and weather resistance make a real difference over time.
Winner: Acrylic render is the stronger all-round performer
Not Sure Which Render Is Right for Your Property?
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Can You Use Both Together?
Yes, and on many jobs it’s the best approach. We recommend putting cement render down first as the base coat over brick or block, then finish with acrylic once the base has cured. Cement provides strength but can crack under stress, while acrylic adds flexibility and helps protect the surface.
This combination also works well on renovations. If existing cement render is sound and properly prepared, acrylic goes straight over the top. No need to strip it back.
It’s a cost-effective way to give an older building a well-protected finish without starting from scratch.
Which Render Is Right for Your Project?
Acrylic render is the stronger long-term investment for most commercial projects and modern homes in Australia, especially anywhere near the coast or in areas with harsh weather.
Cement render is still the right call on stable masonry builds and large-scale projects with tight budgets.
In many cases, the best result comes from using both. Cement for the base, acrylic for the finish.
If you need a rendering system in South Australia, Swart Plastering handles both cement and acrylic rendering for commercial and residential projects. We have over 100 years of award-winning experience and use high-quality products. Get in touch for a free quote.
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FAQs
How long does acrylic render last?
Acrylic render lasts 25 years or more when applied correctly. It holds up strongly against UV, rain, and temperature changes.
Does cement render crack easily?
Cement render can crack if the building moves, dries too quickly, or is not applied properly. This is common in areas with strong heat or shifting ground conditions.
Can I paint over acrylic render?
Yes, you can paint over acrylic render once it has fully cured. Many acrylic renders also come with integrated colour built in, which means you may not need to paint at all.
How thick should cement render be applied?
Cement render is applied at a thickness of 10 to 15 millimetres, depending on the wall surface. The key is even application so it bonds properly and avoids weak spots.
Does render need to be waterproofed?
Render itself is not fully waterproof. In coastal areas or high-rainfall regions, a sealer or protective coating on top is worth it. Acrylic has better built-in moisture resistance than cement, but extra protection is still a smart move in the most exposed locations.
Can acrylic render go over old cement render?
Yes, as long as the existing base is structurally sound, clean, and properly prepared. It’s a common approach on renovation jobs.
Is render a DIY job?
No. Surface preparation, base coat application, and finishing all have a big impact on the final result. Poor workmanship is the most common reason render fails. Always use a licensed, experienced renderer.
