Aluminium side gates have become a popular choice for homeowners seeking durability, low maintenance, and aesthetic appeal. Unlike traditional wooden or steel gates, aluminium offers excellent resistance to rust and corrosion, making it ideal for the often neglected side passage areas. However, the cost of an aluminium side gate can vary significantly, ranging from a few hundred to several thousand dollars. Understanding what drives this price range helps you make an informed decision—whether you are replacing an old gate or planning a new installation.
This article breaks down the major factors that affect the pricing of aluminium side gates. We will cover material specifications, design choices, finishing options, installation complexities, and additional considerations that influence the final figure.
Material Quality and Aluminium Grade
The type and quality of aluminium used directly affect the price. Most side gates are made from extruded aluminium sections. The thickness of the aluminium wall (measured in millimetres or gauge) is critical. Thicker walls—typically 1.6mm to 3mm—provide greater strength and resistance to bending. Gates made from thinner aluminium (around 1.2mm) are cheaper but may not withstand frequent use or harsh weather as well.
Additionally, the alloy composition matters. Aerospace-grade or marine-grade aluminium (e.g., 6061 or 6063 alloy) offers superior strength-to-weight ratio and corrosion resistance. These are priced higher. Some manufacturers use recycled or lower-grade aluminium, which reduces cost but may compromise longevity. When considering cost, ask specifically about the wall thickness and the alloy number.
Size and Configuration
Side gates are rarely standard-sized. Most properties have unique openings, which means custom fabrication is common. The larger the gate, the more material and labour required. A standard single side gate (900mm wide x 1800mm high) will cost less than a double gate (2400mm or wider).
Height also influences price. Taller gates (above 2 metres) often require additional bracing or thicker posts to prevent sagging. Gates designed to match the height of a garden fence or privacy screen may also need infill panels. Furthermore, if the gate needs to accommodate a sloped driveway or uneven ground, special hinges, adjustable posts, or a stepped design will raise costs.
Design Complexity and Aesthetic Features
Plain, flat-panel gates are the most affordable. As you add decorative elements, the price climbs. Common design features that add cost include:
- Lattice or spear tops: Custom welding or assembly of ornamental toppers increases labour.
- Curved or arched tops: Requires additional bending or cutting of aluminium rails.
- Infill materials: Some gates combine aluminium frames with glass panels, perforated metal, or timber slats. Glass infill, especially toughened or laminated, significantly raises the price.
- Bespoke patterns: Laser-cut or CNC-machined designs are unique but expensive.
If you want a gate that complements your home’s architecture, you need to budget for these custom details. Simpler designs with clean lines are budget-friendly and still aesthetically pleasing.
Finish and Coating
Aluminium gates come with a factory-applied finish. The most common is powder coating, available in hundreds of RAL colours. A standard single-colour powder coat is usually included in the gate price. However, if you require a special textured finish (like a wood-grain effect or metallic flake), that is an extra cost.
Anodising is another option—this creates a hard, clear or coloured oxide layer on the metal. It is more durable than most powder coatings and does not chip, but it is generally 20-30% more expensive. Additionally, some manufacturers apply a primer and two-coat paint system for high-end projects. Always ask about the warranty on the finish, as this reflects quality.
Hardware and Accessories
Hinges, latches, locks, and handles can be made from stainless steel, galvanised steel, or aluminium. High-quality stainless steel hardware with concealed fixings adds to the gate’s longevity and security, but also to the cost. Self-locking mechanisms, keyed locks, digital keypads, or magnetic catches are extras.
Gate posts are another consideration. Most aluminium gates are supplied with aluminium posts that match the frame. However, if you have existing brick pillars or need a reinforced steel post (for heavy gates or taller installations), the cost increases. The type of post caps also matters—decorative ball or pyramid caps cost more than plain flat caps.
Installation Complexity
Installation is often the largest variable cost. A simple replacement of an existing gate with a similar-sized aluminium unit might take a professional less than a day. However, if ground preparation is needed—levelling, digging new post holes, or removing concrete—labour time increases.
Installation on a concrete wall versus a timber fence frame demands different techniques. Adding a concrete base for the posts or welding brackets onto steel beams is labour-intensive. Some properties require reinforcement of the structure around the gate (e.g., strengthening a brick pillar). Always request a site visit and a detailed quote that separates the gate price from the installation cost.
Geographic Location and Delivery
Pricing for aluminium side gates varies by region. In metropolitan areas with higher labour costs and living expenses, you can expect to pay more. Conversely, rural areas might have fewer specialised installers, possibly leading to higher travel fees.
Shipping costs also matter. Aluminium gates are lightweight compared to steel but still bulky. If the gate is manufactured outside your local area, freight can add a substantial amount. Some suppliers offer free local delivery but charge for longer distances. Always confirm if the quote includes delivery and installation.
Customisation vs. Off-the-Shelf
Many garden centres and online retailers offer standard-sized aluminium side gates. These are often priced competitively because they are mass-produced. However, the selection is limited to common widths and heights. If your opening does not match standard sizes, you will need a custom-made gate.
Custom manufacturing involves additional design time, material cutting, and welding. Lead times are longer, typically 2-6 weeks. Expect to pay a premium of 15-30% over a comparable stock item. Nevertheless, a custom gate ensures a perfect fit and avoids the need for fillers or adjustments that could compromise security.
Additional Features That Affect Pricing
Several add-ons can further influence the final cost:
- Automation (electric gate opener): Not common for side gates due to narrow spaces, but possible with sliding or folding mechanisms.
- Integrated locking system: Some gates allow you to integrate with home security systems.
- Cats and dog doors: A small pet door cut into the gate panel is an extra charge.
- Anti-climb features: Spikes, rotating bars, or smooth-topped panels may be specified for security.
- Colour matching to existing windows or doors: While a standard colour is free, a custom RAL match might incur a small fee.
How to Get the Best Value
To make an informed purchase and avoid overspending, follow these steps:
1. Measure accurately. Provide precise dimensions including width, height, and any ground slope. A miscalculation can lead to costly reorders.
2. Compare multiple quotes. Get at least three detailed quotes from different suppliers. Ensure each quote breaks down materials, finish, hardware, and installation.
3. Ask about the warranty. A good aluminium gate should come with a minimum 10-year warranty on the frame and a 5-year warranty on the finish.
4. Check references. If possible, visit a previous installation to see the quality of workmanship.
5. Consider the total life cost. A cheaper gate with thinner aluminium and lower-quality powder coating may need replacement or refurbishment within 5-7 years. Spending a bit more upfront can save money in the long term.
The cost of an aluminium side gate is not a simple number—it reflects material quality, design, size, finish, hardware, installation, and location. By understanding each factor, you can better evaluate quotes and choose a gate that meets both your budget and performance expectations.
Aluminium remains an excellent choice for side gates due to its rust-free nature, light weight, and versatility. With proper planning and clear communication with manufacturers and installers, you can enjoy a beautiful, secure, and long-lasting entrance to your side garden for many years.
