If you have been shopping around for composite gates, you have probably noticed a huge range in pricing. Some companies quote under ten thousand pounds while others come in at nearly double that for what appears to be the same product. So what is going on? The answer is simple: not all composite gates are the same, and the difference in quality can be enormous.
The composite gate industry is largely unregulated. There are no mandatory standards governing how these gates are manufactured, what materials are used, or how they are finished. That means it falls entirely on you, the buyer, to understand what separates a gate that will last decades from one that starts falling apart within months.
Steel frame quality matters more than you think
Every composite gate is built around a steel frame, with composite boards used as the infill material. The frame is the structural backbone of the entire gate, and its preparation is critical to longevity.
A properly manufactured steel frame goes through several essential stages before it is anywhere near ready for use:
- Sandblasting — removes mill scale, rust, and surface contaminants down to bare metal
- Chemical cleaning — ensures no oils, grease, or residue remain on the surface
- Hot-dip galvanising — submerges the frame in molten zinc to create a corrosion-resistant barrier
- Powder coating — applies a durable, colour-matched finish over the galvanised surface
Each of these steps adds time and cost to the manufacturing process. Budget manufacturers routinely skip one or more of them. Some skip galvanising entirely. Others apply paint directly over untreated steel. The result is a frame that begins corroding from the inside out almost immediately after installation.
We have seen gates installed by other companies where the steel frame was visibly rusting within six months. Once corrosion starts beneath the composite boards, the damage is hidden until the gate begins to fail structurally.
Inadequate surface preparation is the single biggest reason composite gates fail prematurely. If the frame is not properly sandblasted, cleaned, galvanised, and powder-coated, you are essentially buying a gate with a built-in expiry date.
Composite board variations
The composite boards themselves vary enormously in quality. Premium composite boards feature an embossed, capped plastic surface that convincingly replicates the texture and grain of real wood. They are UV-resistant, fade-resistant, and designed to withstand years of exposure to the British weather without warping, cracking, or discolouring.
Cheaper boards, on the other hand, use a plain fibrous finish. They look flat and artificial from day one, and they tend to degrade quickly when exposed to moisture and temperature fluctuations. The surface can become rough, chalky, and prone to staining.
The cost difference between premium and budget composite boards is significant. High-quality capped boards cost nearly double what cheaper alternatives sell for. When you multiply that across the number of boards needed for a full gate, the price difference becomes substantial, and it directly impacts the overall project cost.
What does a composite gate actually cost in the London area?
Here is a realistic breakdown of what you should expect to pay for a composite sliding gate installation in and around London and Essex:
Basic sliding gate package
A standard composite sliding gate with a steel frame, basic composite boards, motor, safety devices, and professional installation will start at approximately £9,850. This represents the entry point for a properly installed system from a reputable company. Be cautious of quotes significantly below this figure, as corners are almost certainly being cut.
High-specification composite gates
For premium composite boards with embossed wood-grain finishes, a fully galvanised and powder-coated steel frame, premium automation, and all safety features, expect to pay between £14,900 and £18,900+. The exact price depends on the gate size, design complexity, access requirements, and site conditions.
The long-term cost equation
Investing in proper galvanising and powder coating extends the expected lifespan of a composite gate from 5–10 years (for a budget gate) to 20–30 years or more. When you spread the cost over the lifetime of the gate, the premium option almost always works out cheaper per year of service.
Why cheap quotes should raise a red flag
When a company quotes you significantly less than the figures above, ask yourself where the savings are coming from. The motor, safety devices, and installation labour have relatively fixed costs. The only place left to make dramatic savings is on the gate itself, and that means:
- Skipping galvanising or using inferior surface treatments
- Using cheap, uncapped composite boards
- Thinner or lighter steel frame sections
- Cutting corners on welding quality and finish
None of these compromises are visible on installation day. The gate will look fine when it is brand new. The problems emerge six months, twelve months, or two years down the line when the steel starts rusting, the boards start warping, and the gate begins to stick or sag.
What to ask before you buy
Before committing to any composite gate purchase, make sure you ask the following questions:
- Is the steel frame hot-dip galvanised? If the answer is no, or if the company is vague, walk away.
- What type of composite board is used? You want capped, embossed boards, not plain fibrous material.
- Can you see samples of the board finish? Any reputable company will be happy to show you.
- What warranty is provided on the frame and the boards separately? A good frame warranty should be at least 10 years.
- Can you visit a previous installation? Seeing an existing gate that has been in place for a year or more tells you everything about quality.
Our approach
At Charged Services, every composite gate we install uses a fully sandblasted, chemically cleaned, hot-dip galvanised, and powder-coated steel frame. We use only premium capped composite boards with embossed wood-grain finishes. We are transparent about our pricing because we know exactly what goes into every gate we build.
If you are considering a composite gate for your property, we would be happy to talk you through the options and show you exactly what you are paying for. Give us a call on 01375 886299 or request a quote online.