What is composite fencing installation?
Composite fencing installation is the building of a fence from composite boards and slotted posts, bought as a system. The material is made from recycled wood fibre and plastic, and it does not need staining, painting or regular treatment.
The boards cost more than timber, and the installer has to follow the manufacturer's fitting rules or the guarantee may not hold.
Signs you need composite fencing installation
- You are tired of staining or replacing a timber fence
- A damp or shaded boundary rots timber quickly
- You want a uniform, modern look
- You want a solid screen for privacy along a boundary
- You plan to stay in the home for a decade or more
- Rotting posts and boards keep recurring along one boundary
Composite Fencing Installation: methods and options explained
- Composite boards in aluminium posts. A lightweight system with slotted posts that hold boards firmly. Common on higher-spec installations.
- Composite boards in concrete posts. Concrete posts with slots take composite boards on a stout base. Check that the chosen boards are approved for those posts.
- Composite panels. Pre-assembled panels that fix between posts. Quicker to fit than a board system, but less flexible.
- Hybrid designs. Timber or aluminium posts with a composite infill, or a mix of fence and screens for a feature boundary.
What to include when asking for a quote
Give the run lengths and the height you want, and mark corners, gates and changes of level. Say whether you have a manufacturer or finish in mind, and ask for samples before ordering.
Tell the installer whether the site is flat, sloping or stepped, and how materials can reach the garden. Boards are long and heavy, and a narrow side passage may mean carrying every board by hand.
A quote should name the system, the post type and spacing, the board colour and finish, and the guarantee. Check that gravel boards, caps, gate fittings and delivery are in the price, and whether the warranty requires an approved installer.
How much does composite fencing installation cost?
| Type of job | Typical cost |
|---|---|
| Short run up to 6 m | £1,200–£1,800 |
| Typical garden, 10–15 m | £1,800–£3,000 |
| Long run, slopes or corner turns | £3,000–£4,000+ |
These are indicative UK budgeting figures, not fixed quotes. Premium systems, long runs and sloping ground can push the total above the top of the range.
Composite is priced as a system. Check what the manufacturer's guarantee requires, because a poorly fitted fence may not be covered.
The composite fencing installation process: what to expect
- Survey and choose. The run is measured and the system, colour and finish are agreed.
- Order. The system is ordered and delivered, which can take a few weeks.
- Set the posts. Posts go in at the manufacturer's spacing and are left to set.
- Fit the boards. Gravel boards, boards and caps are slotted in, with expansion gaps left.
- Finish. Offcuts and packaging are cleared, and the guarantee paperwork is handed over.
Planning permission and building regulations
Planning rules differ across the UK. Check with the local planning authority before changing a boundary, especially beside a road or at a listed property. The linked Planning Portal guidance is for England; local restrictions and removed permitted development rights can affect what is allowed. See the Planning Portal guidance on fences, gates and garden walls.
Check restrictive covenants, conservation area and listed building rules before ordering a system, and read the manufacturer's guarantee terms carefully.
How to choose a contractor for composite fencing installation
- Are they approved by the manufacturer of the system?
- Which system, colour and finish are in the quote?
- What guarantee comes with the boards and the installation?
- How will they handle slopes, corners and gates?
- How long is delivery, and when can they start?
Frequently asked questions
Is composite fencing worth the extra cost?
It can reduce the time spent staining timber, but costs more to buy and fit. Compare the installation price, cleaning requirements and product warranty before deciding whether it suits your garden.
How long does composite fencing last?
Lifespan depends on the product, installation and exposure. A warranty is not a promise of service life; read the term, exclusions and maintenance requirements for the system quoted.
Does composite fencing need treatment?
No staining or sealing is needed. An occasional wash with water and a soft brush keeps it clean.
Can composite fencing go on a slope?
Yes, but boards are usually stepped rather than raked, which creates gaps at the bottom of each bay. Ask how the installer will handle your slope.