Concrete fencing products are a key part of many UK garden fence installations. While timber fence panels provide privacy and appearance, concrete fence posts and concrete gravel boards often provide the strength, stability and rot resistance that help a fence last longer. For homeowners, landscapers and fencing contractors, choosing the right concrete fencing manufacturer can make a real difference to the quality of the finished boundary.
Concrete fence posts, slotted concrete posts, recessed posts, morticed posts, repair spurs and concrete gravel boards are all designed to solve common fencing problems. They do not rot like timber, they can support standard fence panels, and they help keep wooden fence panels away from damp ground. This is especially useful in UK gardens where rain, wet soil, frost and wind can quickly expose weaknesses in a fence.
This guide looks at three major UK concrete fencing product manufacturers: Supreme Concrete, FP McCann and Allen Concrete. It also explains what concrete fencing products do, when to use them, how they compare with timber alternatives and what to check before buying concrete posts or gravel boards.
What are concrete fencing products?
Concrete fencing products are precast concrete components used to support, protect or repair garden fencing. They are commonly used alongside timber fence panels, closeboard fence panels, lap panels, feather edge fencing, trellis panels and garden gates.
Common concrete fencing products include:
- Slotted concrete fence posts
- Concrete end posts
- Concrete corner posts
- Concrete intermediate posts
- Morticed concrete posts
- Concrete gravel boards
- Plain concrete gravel boards
- Rock-faced concrete gravel boards
- Recessed concrete gravel boards
- Concrete repair spurs
- Concrete chain link posts
- Concrete straining posts
- Pier caps and coping stones
For most domestic garden fencing, the most common products are slotted concrete posts and concrete gravel boards.
Why concrete fencing products are popular in the UK
Concrete fencing products are popular because they deal with one of the biggest weaknesses in timber fencing: moisture at ground level. Wooden posts can rot where they meet the ground, and wooden fence panels can decay if they sit directly on soil or wet grass. Concrete posts and gravel boards help reduce these risks.
Concrete fencing products are useful because they:
- Do not rot like timber
- Provide strong support for fence panels
- Work well in wet gardens
- Help protect the bottom of timber panels
- Can make panel replacement easier
- Resist ground-level moisture
- Can improve fence stability in exposed locations
- Are compatible with many standard fence panel sizes
They are not always the cheapest or lightest option, but they are often chosen where durability matters.
1. Supreme Concrete
Supreme Concrete is one of the best-known names in UK precast concrete fencing products. Now part of Ibstock, Supreme supplies a wide range of precast structural, building, fencing and landscaping products. In domestic fencing, the brand is especially associated with concrete fence posts and concrete gravel boards.
Supreme Concrete products are commonly found through builders’ merchants, fencing suppliers and landscaping stockists. For homeowners and installers, that availability is one of the brand’s main advantages.
Supreme Concrete fencing products
Supreme Concrete’s fencing range is focused on practical precast components for timber panel fencing and garden boundaries.
Products associated with the Supreme range include:
- Slotted concrete fence posts
- Intermediate posts
- End posts
- Corner posts
- Concrete gravel boards
- Repair spurs
- Chain link posts
- Concrete fencing accessories
- Caps and coping products within the wider Ibstock landscaping range
For a standard garden fence, slotted concrete posts are often used with timber fence panels and concrete gravel boards. The panels slide into the post slots, while the gravel board sits at the base to protect the panel from ground moisture.
Why choose Supreme Concrete?
Supreme Concrete is a strong choice where you want a widely recognised concrete fencing brand with broad stockist availability.
Key strengths include:
- Established brand recognition
- Wide merchant availability
- Range of domestic fencing components
- Products suited to timber fence panel systems
- Concrete posts and gravel boards for longer-lasting installations
- Compatibility with many common fencing layouts
Supreme products are often used where homeowners want the appearance of timber fence panels but the durability of concrete support posts.
Best uses for Supreme Concrete products
Supreme Concrete products are suitable for many standard domestic and light commercial fencing projects.
They are commonly used for:
- Rear garden fencing
- Replacement fence posts
- Fence panel upgrades
- Closeboard fence panel installations
- Lap panel installations
- Gardens with damp ground
- Boundary fences needing concrete gravel boards
- Repairs using concrete spurs
For most garden fence panel projects, Supreme Concrete is the sort of manufacturer homeowners are likely to encounter through mainstream trade and retail supply chains.
2. FP McCann
FP McCann is a major precast concrete manufacturer with a dedicated concrete fencing range. The company supplies concrete fence posts, gravel boards and fencing accessories for domestic gardens, parks and commercial settings.
FP McCann is particularly relevant for fencing because its range is not just a sideline in general landscaping. It publishes specific concrete fencing products, including slotted posts and gravel boards, which are widely used with timber fence panels.
FP McCann concrete fencing products
FP McCann’s concrete fencing range includes products designed to support timber fencing and provide long-term durability in outdoor conditions.
Products include:
- Slotted concrete fence posts
- Concrete gravel boards
- Intermediate posts
- End posts
- Corner posts
- Morticed posts
- Repair spurs
- Fencing accessories
The range is suited to standard garden fencing systems where concrete posts are used to support timber panels. Concrete gravel boards can be used at the base to reduce timber contact with soil and help extend the life of the fence panel.
Why choose FP McCann?
FP McCann is a strong option where concrete fencing is a central requirement rather than a minor accessory. Its published range covers many of the products needed for domestic panel fencing and commercial boundary work.
Key strengths include:
- Dedicated concrete fencing range
- Concrete posts and gravel boards for timber panels
- Products for domestic and commercial fencing
- Options for slotted and morticed fencing systems
- Concrete repair spurs for timber post repairs
- Broad precast concrete manufacturing experience
For installers, having access to intermediate posts, end posts, corner posts and gravel boards within one manufacturer’s range can simplify ordering and specification.
Best uses for FP McCann products
FP McCann concrete fencing products are suitable for a wide range of fencing projects.
They are commonly used for:
- Garden fence panel installations
- Closeboard fencing support
- Fence post replacement
- Rotten timber post repairs
- Commercial boundaries
- Parks and public spaces
- Wet or exposed locations
- Long fence runs using concrete posts
FP McCann is particularly relevant for projects where a complete concrete post and gravel board system is required.
3. Allen Concrete
Allen Concrete manufactures precast concrete products for the fencing and building industries. Its fencing range includes concrete posts, gravel boards and repair spurs, making it another important UK name in concrete fencing products.
Allen Concrete is known for practical precast components used by fencing contractors, builders’ merchants and stockists. Its range covers several post types, including slotted and morticed posts, which makes it useful for different fencing systems.
Allen Concrete fencing products
Allen Concrete manufactures a range of concrete fencing products designed for use with timber panels, closeboard fencing and other boundary systems.
Products include:
- Slotted concrete fence posts
- Concrete gravel boards
- Morticed concrete posts
- Recessed posts
- Concrete repair spurs
- Strained wire posts
- Chain link posts
- Concrete post and panel fencing products
- Precast concrete building and landscaping products
This range makes Allen Concrete suitable for both domestic garden fencing and wider fencing applications.
Why choose Allen Concrete?
Allen Concrete is a strong choice where a fencing project needs reliable precast concrete components from a specialist manufacturer.
Key strengths include:
- Manufactures products for the fencing industry
- Range of slotted posts and gravel boards
- Morticed post options for closeboard fencing
- Concrete spurs for fence post repairs
- Suitable for stockists, contractors and builders’ merchants
- Products for several fencing systems, not just standard panels
Its range is especially useful where the project is more varied than a simple panel fence, such as morticed posts for closeboard fencing or spurs for repairing failing timber posts.
Best uses for Allen Concrete products
Allen Concrete products can be used for domestic and trade fencing projects.
They are commonly suitable for:
- Timber fence panel support
- Closeboard fencing
- Slotted post installations
- Concrete gravel board installations
- Fence post repairs
- Chain link fencing support
- Strained wire fencing
- Contractor-led fencing projects
For fencing contractors and merchants, the breadth of the product range is a major benefit.
Comparison of the top three concrete fencing manufacturers
Supreme Concrete, FP McCann and Allen Concrete all produce concrete fencing products, but they are not identical in positioning or range.
A simple comparison is:
- Supreme Concrete: strong brand recognition, wide stockist presence and domestic fencing products within the Ibstock group
- FP McCann: major precast manufacturer with a dedicated concrete fencing range including posts, gravel boards and accessories
- Allen Concrete: specialist precast manufacturer for fencing and building industries, with several post types, gravel boards and spurs
All three are relevant to UK fencing projects. The best choice often depends on local stock availability, required product type, delivery area, project scale and installer preference.
Are these the only concrete fencing manufacturers in the UK?
No. The UK has several manufacturers and suppliers of concrete fencing products. Supreme Concrete, FP McCann and Allen Concrete are important names, but they are not the only options.
Other companies in the wider market may manufacture or supply concrete posts, gravel boards, spurs, coping stones, pier caps or decorative concrete products. Some focus on domestic fencing, while others focus on commercial, agricultural, civil engineering or architectural concrete.
When comparing manufacturers, look beyond brand name and check whether the product is suitable for your exact fence system.
Concrete fence posts explained
Concrete fence posts are vertical supports used to hold fence panels, rails or boards. They are usually set into the ground with post mix or concrete. Unlike timber posts, they do not rot at ground level.
Common concrete post types include:
- Intermediate posts
- End posts
- Corner posts
- Three-way posts
- Slotted posts
- Morticed posts
- Repair spurs
The right post type depends on the fence layout. A straight run needs intermediate posts. The end of a run needs end posts. Corners need corner posts. Repairs may use spurs.
Slotted concrete fence posts
Slotted concrete fence posts are designed for fence panels and gravel boards to slide into the slot. They are commonly used with 6ft wide timber fence panels.
Slotted posts are popular because they make panel replacement easier. If a timber panel becomes damaged, it can often be lifted out and replaced without removing the posts.
Slotted concrete posts are commonly used with:
- Lap fence panels
- Closeboard fence panels
- Decorative fence panels
- Slatted fence panels
- Concrete gravel boards
- Timber gravel boards where compatible
They are one of the most practical choices for domestic garden fencing.
Morticed concrete fence posts
Morticed concrete posts are used for closeboard fencing built with rails and feather edge boards. The rails fit into mortices in the post, creating a strong traditional fence system.
Morticed posts are useful for:
- Closeboard fencing
- Feather edge fencing
- Sloping gardens
- Custom fence runs
- Strong traditional boundaries
They are different from slotted posts, so make sure you order the correct post type for the fencing system you are building.
Concrete gravel boards explained
Concrete gravel boards sit at the base of a fence between or below the posts. Their main purpose is to lift timber fence panels away from damp soil and wet grass.
Concrete gravel boards help to:
- Reduce rot at the bottom of fence panels
- Protect panels from soil contact
- Close gaps under fences
- Improve pet security
- Make the fence line look neater
- Protect against strimmer damage
- Make future panel replacement easier
They are especially useful in wet gardens, sloping gardens, pet-friendly gardens and exposed fence lines.
Plain, recessed and rock-faced gravel boards
Concrete gravel boards are available in different finishes. The choice affects appearance more than basic function.
Common finishes include:
- Plain concrete gravel boards
- Recessed concrete gravel boards
- Rock-faced concrete gravel boards
- Smooth gravel boards
Plain boards are simple and practical. Recessed boards provide a cleaner decorative face. Rock-faced boards have a textured appearance that can suit traditional gardens.
Concrete repair spurs
Concrete repair spurs are used to support or repair failing timber fence posts. A spur is set into the ground beside the existing post and bolted to it, giving the weakened post extra support.
Repair spurs can be useful when:
- A timber post has rotted at ground level
- The fence panel is still usable
- The post is leaning but not completely failed
- Full post replacement would be disruptive
- A temporary or medium-term repair is needed
A spur is not always the right answer. If the fence is badly rotten or the panels and rails are failing, full replacement may be better.
Concrete posts versus wooden posts
Concrete and wooden posts both have a place in garden fencing. Concrete posts are more durable against rot, while wooden posts give a more natural appearance.
Concrete posts are better for:
- Wet ground
- Long-term durability
- Panel replacement
- Exposed fence lines
- Low-maintenance installations
- Supporting concrete gravel boards
Wooden posts are better for:
- A natural timber appearance
- Lower material weight
- Some decorative fencing styles
- Projects where all-timber construction is preferred
- Gardens where concrete would look too harsh
Many homeowners choose timber panels with concrete posts to get the appearance of wood and the durability of concrete support.
Concrete gravel boards versus wooden gravel boards
Concrete gravel boards are more resistant to rot than wooden gravel boards. Wooden gravel boards look more natural but need suitable treatment and maintenance.
Concrete gravel boards are useful where:
- The ground is damp
- The garden has pets
- The fence line is exposed to wet grass
- Long-term durability is important
- Panel bases need strong protection
- The fence uses slotted concrete posts
Wooden gravel boards may be preferred where appearance is more important and the garden is well drained.
Why concrete fencing products work well with timber panels
Concrete posts and gravel boards are often used with timber panels because each material does a different job well. Timber panels provide privacy and a natural look. Concrete posts and gravel boards provide support and protection at the points most exposed to moisture.
This combination is popular for:
- Closeboard fence panels
- Lap fence panels
- Decorative fence panels
- Slatted fence panels
- Replacement fence runs
- Pet-secure gardens
- Boundary upgrades
It is one of the most practical fencing systems for UK gardens.
When should you choose concrete fencing products?
Concrete fencing products are worth considering when durability is more important than the lightest or cheapest installation.
Choose concrete posts or gravel boards if:
- Your garden has wet ground
- Fence posts have rotted before
- You want easier panel replacement
- The fence is exposed to wind
- You want low-maintenance support posts
- You are installing heavy fence panels
- You want to protect panel bases from soil
- You have dogs that may dig under the fence
Concrete components can cost more and are heavier to install, but they can reduce long-term fence problems.
When timber posts may still be suitable
Concrete is not always necessary. Pressure treated wooden fence posts can still be suitable in many domestic gardens, especially where appearance and handling are priorities.
Timber posts may suit:
- Small garden fences
- Decorative fencing
- Picket fencing
- Low fence panels
- All-timber designs
- Budget-focused projects
- Gardens where concrete posts would look too heavy
If using timber posts, choose posts treated for ground contact and install them properly.
How to choose a concrete fencing manufacturer
The best manufacturer is not always the one with the biggest name. The right choice depends on the exact products you need, where they are stocked and whether they fit your fence system.
When comparing manufacturers, check:
- Product range
- Post types available
- Post lengths
- Gravel board sizes
- Finish options
- Compatibility with standard fence panels
- Availability through local suppliers
- Delivery options
- Technical information
- Handling guidance
- Standards and quality controls
- Installer familiarity with the product
For a simple garden fence, local availability may matter more than small differences between similar products.
Check post length before buying
Post length is critical. A post must be long enough to support the fence height and be set deep enough into the ground.
Before ordering, check:
- Fence panel height
- Gravel board height
- Required post depth
- Finished fence height
- Ground levels
- Whether the garden slopes
- Whether trellis will be added
- Whether the fence is exposed to wind
Do not choose posts based only on panel height. Allow for gravel boards and the depth below ground.
Check concrete gravel board height
Concrete gravel boards are commonly available in different heights. The right choice depends on the fence design and ground conditions.
Common considerations include:
- How much panel protection is needed
- Whether the ground slopes
- Whether pets may dig under the fence
- Whether the board needs to retain small level changes
- Whether the total fence height remains acceptable
- Whether the posts are long enough
A taller gravel board raises the fence panel higher, which can affect total height.
Concrete fencing and fence height rules
Concrete posts and gravel boards can affect the overall height of a fence. If you install a 6ft fence panel on top of a gravel board, the finished fence may be higher than expected.
Before installing, consider:
- Panel height
- Gravel board height
- Any trellis topper
- Ground level differences
- Whether the fence is near a highway
- Local planning limits
If the total height exceeds permitted development limits, planning permission may be required.
Concrete fencing for windy gardens
Concrete posts are often chosen for windy gardens because they provide strong support. However, wind resistance also depends on panel style and installation depth.
For windy gardens, consider:
- Concrete posts
- Concrete gravel boards
- Closeboard panels
- Hit and miss panels
- Slatted panels
- Deeper post foundations
- Exterior-grade fixings
- Avoiding weak trellis toppers
A solid panel creates more wind load than a panel that allows air through. Concrete posts help, but they do not remove the need for a suitable fence design.
Concrete fencing for wet gardens
Wet gardens are one of the best situations for concrete fencing products. Concrete posts resist ground-level rot, and concrete gravel boards help protect timber panels from damp soil.
For wet gardens, useful choices include:
- Slotted concrete posts
- Concrete gravel boards
- Pressure treated fence panels
- Good drainage around the fence line
- Panels kept clear of soil
- Regular removal of wet leaves
Concrete will not solve every drainage issue, but it can reduce timber decay at the fence base.
Concrete fencing for sloping gardens
Sloping gardens often need stepped fencing. Concrete slotted posts can work well, but planning and measurement are important.
When fencing a slope, check:
- Post spacing
- Panel height
- Step height between panels
- Gravel board height
- Post length
- Corner positions
- How gaps under panels will be managed
- Whether custom feather edge fencing would suit better
Concrete gravel boards can help manage small level changes, but larger slopes may need a more detailed fencing design.
Concrete fencing for pet-friendly gardens
Concrete gravel boards are useful in gardens with dogs because they help close gaps under fence panels and reduce digging points at the panel base.
For pet-friendly fencing, consider:
- Concrete gravel boards
- Strong fence panels
- Secure posts
- Well-fitted side gates
- No large gaps under panels
- Gate latches and locks
- Checking corners and returns
Concrete gravel boards can make a fence feel more secure, but gates and corners still need attention.
Concrete fencing and garden gates
Concrete posts are commonly used with fence panels, but gates need careful planning. A gate puts twisting and pulling loads on its posts, especially if it is wide or heavy.
For garden gates, consider:
- Whether concrete gate posts are suitable
- Gate width and weight
- Hinge type
- Post strength
- Foundation size
- Latch position
- Clearance over paving
- Wind exposure
Do not assume a standard slotted fence post is suitable as a gate post unless the product is designed for that purpose.
Handling and installation considerations
Concrete fencing products are heavy. This affects delivery, storage, lifting and installation. Many products need two-person handling or mechanical assistance.
Before ordering concrete posts or gravel boards, plan:
- Delivery access
- Where the products will be stored
- How they will be carried to the fence line
- Whether two people are needed
- Whether the route has steps or narrow side access
- How old posts and concrete will be removed
- What tools are required
Concrete products are durable, but they can still chip or crack if dropped or mishandled.
Installing concrete fence posts
Concrete posts must be set correctly. A strong post installed too shallowly can still lean or fail.
Good installation practice includes:
- Marking the fence line accurately
- Digging holes to the correct depth and width
- Checking panel spacing before setting posts
- Using a string line
- Checking posts are plumb
- Bracing posts while they set
- Using suitable post mix or concrete
- Allowing adequate setting time
- Checking slots face the correct direction
Concrete posts are difficult to adjust once set, so accuracy matters from the start.
Common mistakes when buying concrete fencing products
Many concrete fencing problems come from ordering the wrong components or failing to plan the full system.
Common mistakes include:
- Ordering the wrong post type
- Forgetting end or corner posts
- Choosing posts that are too short
- Not allowing for gravel board height
- Mixing incompatible panel and post sizes
- Underestimating product weight
- Not planning delivery access
- Using too little post mix
- Setting posts out of line
- Adding trellis without checking total height
- Using standard posts for gate loads
Measure carefully before ordering. Concrete components are not as easy to modify on site as timber.
Common mistakes when installing concrete fencing
Concrete fencing is strong, but poor installation can still lead to failure.
Avoid these mistakes:
- Setting posts too shallow
- Not bracing posts while concrete sets
- Forcing panels into misaligned slots
- Ignoring slopes and level changes
- Leaving gravel boards unsupported
- Using damaged posts
- Dropping concrete boards during handling
- Installing heavy panels too soon
- Not checking the fence line from a distance
- Failing to plan corners and returns
A concrete fencing system only works well when the layout is accurate.
Concrete fencing product buying checklist
Before buying concrete fencing products, check:
- Which manufacturer and product range you are using
- Whether you need slotted or morticed posts
- How many intermediate posts are required
- How many end posts are required
- How many corner posts are required
- Post length
- Panel height
- Gravel board height
- Finished fence height
- Ground conditions
- Wind exposure
- Delivery access
- Handling requirements
- Whether repair spurs are needed
- Whether gates need specialist posts
It is better to spend time planning than to discover during installation that a key post type is missing.
Frequently asked questions
Who are the top concrete fencing product manufacturers in the UK?
Supreme Concrete, FP McCann and Allen Concrete are three major UK names to know for concrete fencing products. They supply products such as concrete fence posts, gravel boards, repair spurs and related precast fencing components.
What does Supreme Concrete make for fencing?
Supreme Concrete supplies precast concrete fencing and landscaping products, including concrete fence posts and gravel boards commonly used with timber fence panels.
What does FP McCann make for fencing?
FP McCann supplies concrete fencing products including slotted concrete posts, gravel boards, morticed posts, repair spurs and fencing accessories.
What does Allen Concrete make for fencing?
Allen Concrete manufactures precast concrete fencing products including slotted posts, gravel boards, morticed posts, repair spurs, chain link posts and other fencing units.
Are concrete fence posts better than timber posts?
Concrete fence posts are more resistant to rot and are often better for wet or exposed gardens. Timber posts have a more natural appearance and are lighter to handle, but they need suitable treatment and maintenance.
Are concrete gravel boards worth it?
Yes, concrete gravel boards are often worth using because they keep timber fence panels away from damp soil and wet grass. This can help reduce rot at the base of the panel.
Can concrete posts be used with wooden fence panels?
Yes. Slotted concrete posts are commonly used with wooden fence panels, including lap panels, closeboard panels and decorative panels.
Are concrete fencing products low maintenance?
Concrete posts and gravel boards are low maintenance compared with timber because they do not rot. They should still be checked for cracks, movement and installation issues over time.
Can concrete fence posts crack?
Concrete posts can crack if mishandled, badly installed, overloaded or affected by severe impact. Choose suitable posts and install them correctly.
Which concrete fencing manufacturer should I choose?
Choose based on the product type you need, local availability, compatibility with your fence panels, delivery options, technical information and installer familiarity. Supreme Concrete, FP McCann and Allen Concrete are all relevant options in the UK market.
Final thoughts
Concrete fencing products are an important part of durable UK garden fencing. Timber fence panels may provide the main visual boundary, but concrete posts and gravel boards often decide how well the fence performs over time. They help prevent ground-level rot, support panels more securely and make future panel replacement easier.
Supreme Concrete, FP McCann and Allen Concrete are three major UK manufacturers to know when comparing concrete fence posts, concrete gravel boards, repair spurs and related precast fencing products. Supreme Concrete has strong brand recognition and stockist presence, FP McCann offers a dedicated concrete fencing range, and Allen Concrete manufactures a broad range of precast fencing units for the fencing and building industries.
The right choice depends on the job. For a standard panel fence, slotted concrete posts and concrete gravel boards may be ideal. For closeboard fencing, morticed posts may be more suitable. For repairs, concrete spurs can extend the life of an existing timber post. Whichever manufacturer you choose, measure carefully, order the correct post types, allow for finished fence height and make sure the installation is strong enough for the site.