To construct a garden fence, set durable posts, add rails or panels, and finish with level lines, weatherproof fixings, and a gate.
Building a fence that looks good and stays straight starts with a clear plan. This guide walks you through layout, materials, safe digging, and the exact steps to fix posts, rails, and panels so the fence stays true and resists storms. You’ll also find sizing tables, tool tips, and care steps that extend service life. If you’re new to how to construct a garden fence, start here and you’ll avoid the usual pitfalls.
Project Overview And Choices
Before you pick up a post hole digger, decide what the fence must do: keep pets in, add privacy, carry climbers, or mark a boundary. That aim decides height, post spacing, and the best materials. The table below compares common styles so you can match look, budget, and effort.
| Fence Type | Best For | Lifespan & Notes |
|---|---|---|
| Closeboard (featheredge) | Privacy and wind | Strong with vertical boards; heavy; plan stout posts. |
| Panel With Posts | Fast installation | Pre-made panels; easy to swap; mind exact post spacing. |
| Picket (pales) | Front gardens | Light, airy look; kinder to wind loads; good with low heights. |
| Wire And Timber | Veg beds, pets | Low cost; add rails for stiffness; great inside gardens. |
| Hit-And-Miss | Windy sites | Boards alternate sides; reduces sail effect; needs neat layout. |
| Trellis Topper | Climbers, light | Adds height without bulk; keep within local height limits. |
| Post And Rail | Rural look | Quick to run; add mesh for pets; long spans need sturdy posts. |
| Gabion Low Wall | Modern edge | Stone-filled baskets; heavy; check ground and drainage. |
Constructing A Garden Fence: Planning Checklist
Good prep prevents rework. Confirm boundaries, talk to neighbours if a shared line is involved, and check local height limits and site rules. In many places, rear garden fences up to two metres are fine, while boundaries next to a public path or road may be limited to one metre; always check local guidance such as the UK fences, gates and garden walls rules. Keep posts inside your land, agree access for work on shared lines, and photograph the site before you start.
Site And Line
Walk the line and mark underground risks. Call utility mark-out services if available. Check slopes and drainage. Pick a starting corner that’s square to a fixed feature such as a wall or patio edge.
Materials And Tools
You’ll need posts, concrete or postcrete, rails or panels, gravel boards, corrosion-resistant screws or nails, post caps, stringline, tape, level, drill/driver, saw, lump hammer, digging bar, and PPE (gloves, boots, eye protection). For heavy clay, add pea gravel for drainage; for soft ground, use longer posts or concrete spurs.
How To Construct A Garden Fence: Step-By-Step
This section gives you a clean sequence from stringline to finish. Keep panels flat and posts plumb; repeat the same checks at every bay.
1) Set The Layout
Tap in a stake at each end of the run. Pull a tight stringline at the planned face of the fence. Measure the total run and divide by your panel width or bay length to work out post positions. Adjust equal gaps so you don’t end up with a narrow last bay.
2) Mark Post Centers
Mark centres on the ground with spray paint. Standard panel systems use 1.83 m spans; rail-built fences run 1.8–2.4 m. Shorten spans in high winds or with tall fences to reduce load on each post.
3) Dig Post Holes
Dig to a depth of a third of post height above ground, or at least 600 mm for 1.8 m fences. Widen the base slightly like a bell to resist uplift. In free-draining soils, drop in 100 mm of compacted gravel for drainage.
4) Set Corner And Gate Posts First
Dry-fit posts, checking faces to the stringline. Mix concrete to a firm slump or use a rapid-set product. Tamp well. Check plumb on two faces, then brace while it cures. Corner and gate posts carry the most load, so give them time to set hard before hanging weight.
5) Run Intermediates
Work bay by bay. With the stringline still tight, set each post to height so the tops align. Use a sacrificial batten cut to panel height as a quick gauge. Keep the same reveal to the stringline so the fence reads straight from end to end.
6) Add Gravel Boards
Fix gravel boards between posts to lift timber clear of soil splash. This small gap keeps panels drier and makes future board replacement easy without disturbing the whole bay.
7) Fix Rails Or Drop Panels
For rail-built fences, fit bottom, middle, and top rails, then board vertically. For panel systems, slide panels into recessed posts or fix with brackets. Pre-drill near edges to avoid splits. Check each bay for level at the top line.
8) Hang The Gate
Brace the gate leaf during fitting. Use heavy tee-hinges or strap hinges, three on tall gates. Leave a small gap at the latch side for seasonal movement. Fit a drop bolt and a latch that matches use—thumb latch for hand gates, auto-latch for pets.
9) Cap, Treat, And Clean Up
Top posts with caps to shed water. Seal cut ends with end-grain preservative that matches your treatment type. Rake surplus soil away from posts to avoid damp pockets. Finish with stain or paint once timber is dry per product label.
Sizing Rules That Keep Fences Standing
Post size, hole depth, and spacing make or break stiffness. Go up a size if you live in a windy spot or if the fence carries a trellis. Timber posts in ground should be Use Class 4 (UC4); metal or concrete posts also work well where soils stay wet.
| Fence Height | Typical Post Spacing | Hole Depth |
|---|---|---|
| 0.9 m (picket) | 2.0–2.4 m | 450–500 mm |
| 1.2 m (picket/mesh) | 1.8–2.4 m | 500–550 mm |
| 1.5 m (light panels) | 1.8–2.1 m | 550–600 mm |
| 1.8 m (privacy) | 1.8–2.0 m | 600–650 mm |
| 2.0 m (windy sites) | 1.6–1.8 m | 650–700 mm |
| Gate posts | As required | 700–800 mm |
| Slopes & steps | Shorten spacing | Match tallest bay |
| Soft ground | Shorten spacing | Deeper or longer posts |
Fixings, Mixes, And Smart Details
Screws Or Nails
Use exterior-rated screws for serviceability; they’re easy to back out during repairs. Ring-shank nails are quick for boards but pick hot-dip galvanised or stainless in coastal areas. Mix types only where it makes sense, such as screws on rails and nails on boards.
Concrete Choices
Bagged rapid-set is handy for short runs. For many posts, mix by volume: three parts gravel, two parts sand, one part cement, with water to a stiff mix. Crown the top to shed water away from timber. In wet soil, form a small dry zone with gravel around the base and cap the concrete top below finish grade.
Dealing With Slopes
Step panels level from bay to bay, or run boards to the ground line for a raked look. Keep gaps small where pets live. Where the fall is steep, add a plinth board to hide steps and stop soil washout.
Gates, Corners, And Transitions
Stiffen corners with longer posts or diagonal bracing. Where a fence meets a wall, use a wall plate and sleeve anchors. At a driveway, add a short return panel to widen the swing path. Match latch height to users so it’s easy to reach.
Finishes And Care
Once the fence is dry from rain or concrete, brush or spray with a fence stain rated for exterior use. Thin coats bond better than one heavy coat. Wash down yearly and recoat when water stops beading. Keep soil and mulch away from boards to cut damp time.
Common Mistakes And Easy Fixes
Shallow Holes
Too-shallow posts rock and crack concrete. If a bay moves in wind, add a spur or re-set the post deeper.
Skipping Drainage
Water trapped around posts speeds decay. Add gravel at the base and slope the concrete cap.
Ignoring Line And Level
Posts that snake or rise and dip draw the eye. Reset before you fix boards; it’s faster than living with a wonky run.
Buying Untreated Posts
Untreated or light-duty timber in contact with soil fails early. Pick UC4-treated posts or metal/concrete alternatives for ground contact.
When To Call A Pro
If access is tight, the run is long, or the ground hides old rubble, a contractor with an auger rig saves time and avoids lining the street with spoil. Bring in help for big gates, walls, or mixed boundaries next to public paths where rules are strict.
Cost And Time Benchmarks
Simple panel runs install fast: two people can set ten posts and hang nine bays in a day after footing cure times. Rail-and-board systems take longer but cost less in materials. Upgrades that add time but pay back later include concrete posts, deep gravel boards, and stainless fixings near coasts.
Putting It All Together
Now you know how to plan, set, and finish a straight, tough boundary. If you came looking for advice on how to construct a garden fence that stays neat for years, follow the steps above, match post size to height, and spend time on the stringline. Use UC4-rated posts, set them deep, and keep timber off wet soil. Your fence will read straight, swing clean at the gate, and stand up to winter blows.
Checklist You Can Print
- Confirm boundary and height rules; check local guidance.
- Pick a style and post type that suits wind and soil.
- Lay out with a tight stringline and equal bays.
- Dig to one-third height; bell the base; add gravel.
- Set corners and gates first; brace while curing.
- Add gravel boards; fit rails or drop panels true.
- Seal cut ends; fit caps; stain once dry.
The steps above show you exactly how to construct a garden fence without guesswork. Use the tables when you shop, set the stringline tight, and repeat the same checks at every bay for a clean, durable result.