A façade upgrade can change the whole feel of a home, but render vs cladding costs are rarely decided by a simple rate per square metre. The visible finish matters, yet the condition of the walls behind it, access around the property and the detail required at windows, corners and rooflines often have just as much influence on the final investment.
For Melbourne homeowners, renovators and builders, the better question is not simply which option is cheaper. It is which system suits the building, design brief, budget and expected lifespan without compromising on workmanship or weather protection.
Render vs Cladding Costs at a Glance
Rendering is generally the more economical choice where the existing masonry substrate is sound and the aim is to create a clean, modern exterior finish. Cladding systems, including polystyrene cladding with a rendered finish, usually carry a higher upfront cost because they add a new wall build-up, insulation potential and more detailed installation work.
As broad installed estimates for straightforward residential work in Melbourne, cement render may sit around $60 to $90 per square metre, while acrylic render can commonly range from $70 to $120 per square metre. Polystyrene cladding systems often begin around $140 per square metre and can exceed $250 per square metre where complex detailing, significant wall preparation or premium finishes are involved.
These figures are a starting point, not a substitute for a site-specific quote. A small job with difficult access can cost more per square metre than a larger, open site, even when the chosen finish is identical.
What You Are Paying for With Render
Render is a protective coating applied directly to a suitable substrate, most commonly brick, blockwork or cement sheet. Cement render is a traditional option that provides a firm, durable base and can be finished in a range of textures. Acrylic render includes flexible polymer binders, which can help manage minor movement and supports a broad choice of modern textured finishes.
The material itself is only part of the cost. A good rendering job involves preparing the surface properly, repairing cracks or damaged masonry, applying compatible base coats and mesh where needed, forming straight edges, and allowing each layer to cure correctly. The final texture and paint system also affect both appearance and durability.
A straightforward brick wall with easy access is usually efficient to render. Costs rise when old paint must be removed, walls are uneven, there are multiple storeys, or the design includes sharp architectural lines, recessed entries and detailed feature areas. Scaffolding, protective masking and site set-up can also be substantial items on a tight suburban block.
Rendering can offer strong value when the main goal is to refresh tired brickwork, unify an extension with an existing home or achieve a contemporary façade without changing the structure of the external walls. It is particularly effective when paired with thoughtful colour selection, quality paint and a finish that suits the home’s architecture.
When Cement or Acrylic Render Makes Financial Sense
Cement render can be a sensible option for stable masonry walls where a classic solid finish is required and the budget needs to stay controlled. Acrylic render often costs more initially, but its flexibility, finish options and suitability for selected substrates can make it worthwhile for homes exposed to changing weather or minor substrate movement.
Neither is automatically best. The appropriate system depends on the wall material, exposure to moisture, existing condition and the look you want to achieve. Applying the wrong product to save money can lead to cracking, adhesion issues or premature repairs, which is never a genuine saving.
Why Cladding Often Costs More Upfront
Cladding is a broader category than many homeowners realise. It can include fibre cement, timber, metal, composite panels and polystyrene cladding systems. For a rendered architectural look, expanded polystyrene panels fixed to the exterior wall and coated with a reinforced render system are a popular choice.
This approach costs more than rendering directly onto brick because it involves additional materials and installation stages. Panels must be set out accurately, securely fixed, reinforced at joints and corners, and finished with compatible coatings. Window reveals, parapets, external corners, penetrations and transitions to other materials all require careful detailing to keep the façade looking sharp and performing as intended.
The added expense can be justified where walls are uneven, where a lightweight architectural form is needed, or where improving thermal performance is part of the project. Polystyrene cladding can also help create depth, conceal selected imperfections and transform plain elevations into a more considered design.
It is not the right answer for every home. If solid brick walls are in good condition and insulation is not a priority, direct render may provide the visual outcome you want at a lower cost. Conversely, trying to force render onto a poor or unsuitable substrate can make cladding the more practical long-term choice.
The Cost Factors That Matter Most
A reliable quote should account for the complete system, not just the finish coat. Four factors have the biggest effect on what you will pay.
- Wall condition and preparation: Cracked masonry, loose paint, moisture damage, failed previous render and uneven surfaces all need to be addressed before a new finish is applied.
- Access and building height: Single-storey walls with clear access are faster and safer to complete. Double-storey homes, sloping sites, narrow side paths and areas above roofs may require scaffolding or specialised access equipment.
- Design detail: Large flat wall areas are more cost-effective than façades with many windows, curves, returns, bands, feature grooves and material changes. Detail creates visual appeal, but it also requires more time and precision.
- System specification: The choice of render, reinforcement mesh, polystyrene thickness, trims, waterproofing measures and paint coatings affects price. So does the level of durability required for exposed elevations.
Melbourne’s weather is another consideration. A façade may face driving rain, hot summer sun and cool, damp conditions across the year. Appropriate product selection, drainage detailing and curing conditions matter. A polished result should not come at the expense of the building’s ability to manage moisture.
Compare Lifetime Value, Not Just the Quote
The lowest initial price can be appealing, particularly during a renovation with several trades on site. However, rendering and cladding should be assessed on their likely maintenance needs, expected performance and impact on the property as a whole.
A well-specified render system on a prepared masonry wall can deliver many years of service, though it may need periodic cleaning, painting and local crack repairs over time. Acrylic finishes can be more forgiving in certain applications, but they still rely on correct preparation and installation.
Polystyrene cladding has more components, so the standard of installation is especially important. When professionally installed with appropriate detailing, it can provide a refined façade, added insulation benefits and a flexible base for a rendered finish. It should be protected from impact damage and inspected periodically around joints, penetrations and vulnerable ground-level areas.
For both options, workmanship is central to value. Poor preparation may not be obvious on handover day, but weak adhesion, cracking, water entry and uneven texture can become expensive problems later. A detailed scope, compatible materials and installers who understand the relevant manufacturer and engineering guidelines provide more confidence than a vague low-price allowance.
Questions to Ask Before Choosing a System
Before accepting a quote, ask what wall preparation is included, how cracks and substrate movement will be managed, and whether scaffolding, masking, waste removal and painting are allowed for. It is also worth confirming the exact products, finish texture, colour approach and any exclusions around flashing, window alterations or repairs by other trades.
If cladding is proposed, ask about the panel thickness, fixing method, reinforcement, edge details and how the system meets the project’s relevant requirements. If render is proposed over an existing surface, ask whether the substrate has been assessed for soundness and moisture issues. Clear answers at this stage help prevent variations once work has started.
A finish sample can also be valuable. Texture looks different across a full sun-facing wall than it does on a small colour chart, and the right finish should complement the home’s brickwork, joinery, roof colour and landscaping.
Choosing the Right Investment for Your Home
Render is often the cost-effective path to a fresh, sophisticated exterior when the existing walls are suitable. Cladding is usually the larger upfront investment, but it can deliver greater design flexibility and thermal benefits where the project calls for them. The best choice comes from assessing the building before selecting the finish, rather than treating both systems as interchangeable.
A proper on-site assessment gives you the chance to match the surface system to your home’s condition, architectural goals and budget. At Bay 2 Bay Rendering, that means focusing on the details behind the finish as carefully as the finished look on the street.