Rendering is one of the most effective ways to enhance and protect your home’s exterior. It not only improves appearance but also adds strength and weather resistance to walls. However, not all renders are the same. Two of the most common options used in Sydney are acrylic render and cement render — and while they may look similar at first glance, they differ significantly in composition, flexibility, and performance. This guide explores the key differences between the two, helping you choose the best finish for your property.
Understanding the Basics of Rendering
Rendering involves applying a mixture of materials to external or internal walls to create a smooth, textured, or decorative surface. It protects against moisture, sunlight, and wear caused by Sydney’s changing weather conditions while improving energy efficiency and curb appeal. Homeowners across Sydney use rendering to modernise older brick homes, protect new builds, and achieve a sleek, contemporary look.
What Is Cement Render?
Cement render is a traditional wall coating made from a blend of sand, cement, and lime. It’s applied in layers to brick, concrete, or block walls to create a strong, durable surface. Cement render has been used in Australian construction for decades because of its affordability and ability to produce a solid, timeless finish. However, cement render is rigid and can develop cracks over time due to building movement or extreme temperature changes. This makes it less flexible than modern alternatives like acrylic render Sydney, which can adapt to surface shifts without fracturing.
Pros of Cement Render:
- Affordable and widely available.
- Durable when properly applied and maintained.
- Provides a smooth, clean appearance.
Cons of Cement Render:
- Prone to cracking due to rigidity.
- Requires longer drying and curing times.
- Limited finish and colour options.
What Is Acrylic Render?
Acrylic render is a modern alternative that combines traditional cement materials with acrylic resins (plastic polymers). This blend gives it flexibility and superior adhesion, allowing it to bond to various surfaces including brick, Hebel, blue board, and even painted walls. It’s available in different textures and colours, dries faster, and resists cracking — making it ideal for Sydney’s coastal and urban environments.
Pros of Acrylic Render:
- Highly flexible and resistant to cracking.
- Fast-drying and easy to apply.
- Suitable for a wide range of surfaces.
- Long-lasting and water-resistant.
Cons of Acrylic Render:
- Slightly higher cost than cement render.
- Requires skilled application for a consistent finish.
See also: Navigating the Intersection of Orthodontics and Lifestyle Choices
Key Differences Between Acrylic and Cement Render
| Feature | Acrylic Render | Cement Render |
| Flexibility | Expands and contracts with temperature changes | Rigid and prone to cracking |
| Drying Time | 24–48 hours | 5–7 days |
| Surface Compatibility | Brick, blue board, Hebel, painted walls | Brick, block, concrete |
| Finish Options | Smooth, textured, coloured | Coarse or smooth grey |
| Durability | 20+ years with maintenance | 10–15 years |
| Water Resistance | High (especially with sealer) | Moderate |
| Cost | $50–$80/m² | $40–$60/m² |
| Best Use | Modern homes, renovations | Traditional brick homes |
Acrylic render offers more versatility and longevity, while cement render remains a budget-friendly option for solid masonry projects.
Which Type of Render Is Better for Sydney Homes?
Sydney’s climate — marked by humidity, salt air, and high UV exposure — often favours acrylic render due to its flexibility and moisture resistance. Acrylic render prevents cracks caused by building movement and temperature fluctuations, maintaining its look for years. However, cement render still works well for traditional homes with large, solid brick walls or when cost is a major consideration. The right choice depends on your wall material, finish preference, and long-term goals.
The Application Process
Both render types require a similar step-by-step process, though the materials behave differently.
- Surface preparation: Cleaning and repairing walls to ensure proper adhesion.
- Mixing: Using the correct proportions for strength and texture.
- Application: Spreading the render evenly with a trowel or spray system.
- Curing: Allowing time for the render to set and harden.
- Sealing or painting: Protecting the surface with a weather-resistant coating.
Acrylic render cures faster and can be painted or sealed within a couple of days, whereas cement render needs more time to dry thoroughly.
Cost Comparison
Cement render typically costs between $40–$60 per square metre, making it the more affordable choice for large projects. Acrylic render usually ranges from $50–$80 per square metre due to its materials and flexibility benefits. While acrylic render has a slightly higher upfront cost, its longer lifespan and reduced maintenance can make it more cost-effective in the long run.
Maintenance and Longevity
Cement render may need periodic repainting and minor repairs due to cracking or water absorption. Acrylic render, on the other hand, maintains its colour and structure for much longer, with minimal upkeep. Regular washing and sealing every few years can keep both types looking their best.
Choosing the Right Render for Your Project
Choose acrylic render if you’re after flexibility, durability, and a high-end finish — ideal for Sydney’s weather and modern architecture. Opt for cement render if you’re working on a traditional brick home or want a cost-effective solution for a large surface area. A professional renderer can assess your walls, discuss your goals, and recommend the right material and finish for lasting results.
Final Word
Both acrylic and cement render have their advantages — the choice ultimately depends on your budget, property type, and desired finish. Acrylic render stands out for its flexibility, quick drying time, and weather resistance, while cement render remains a reliable, classic choice for solid structures. If you’re planning a rendering project, consult an experienced Sydney renderer to determine which option will deliver the best long-term outcome for your home.