A garden fence panel goes up in five stages: plan, set posts, fit gravel boards, slot panels, and finish with caps and treatment.
New panels can add privacy, define beds, and calm wind around delicate plants. This guide lays out a clean, DIY-friendly method from first measurement to the last screw. You’ll see the tools, layout tricks, safe digging habits, and tidy finishing moves that make a fence look straight on day one and still look straight years from now.
Project Snapshot And What You’ll Need
Before you cut a line or lift a post, gather the kit and understand where each piece fits in the build. The table below keeps it tight and scannable.
| Item | Why It Matters | Quick Notes |
|---|---|---|
| Panels (lap, closeboard, slatted, trellis) | Sets privacy, airflow, and style | Common widths: 1.8–2.0 m; heights vary |
| Posts (timber UC4 or concrete) | Holds the load and keeps lines straight | Length = panel height + burial depth |
| Gravel Boards (timber/concrete) | Keeps panels off damp soil | Typical height 140–150 mm |
| Post Mix (fast-set) or Concrete | Locks posts in the ground | Backfill with compacted gravel for drainage |
| Fixings (exterior screws, brackets, clips) | Secure panels to posts | Use stainless or coated hardware |
| String Line, Tape, Pegs | Gives a dead-straight run | Set to final face line of the fence |
| Post Hole Digger/Spade + Bar | Neat, vertical holes | Target clean sides and consistent depth |
| Level (600 mm+), Clamps, Spacers | Keeps everything plumb and evenly gapped | Check both faces of each post |
| Saw, Preservative, Brush | Trims to fit and seals cut ends | Coat fresh cuts right away |
| PPE (gloves, boots, eye/ear protection) | Safer handling and digging | Add dust mask when cutting concrete |
Plan The Line, Height, And Boundaries
Pick a clear line that works with beds, sheds, and paths. Walk the run with a tape and mark each panel width on the ground. Add a post location at every joint and at ends. Check title plans or speak with neighbors before you set anything in stone.
If your boundary faces a road or a footpath, height rules can change. Many regions cap boundary structures next to a highway lower than rear runs. Mid-project surprises are no fun, so check your local guidance early.
Safety And Services Under The Soil
Buried lines aren’t always where you’d expect. Book a utility locate before you dig and wait for markings. Hand-dig near marks and keep the hole sides tidy. A careful start saves repairs and keeps the project on schedule.
How To Install Garden Fence Panels Safely And Neatly
This is the step-by-step build that balances speed with a long service life. Work in short sections so posts don’t shift while concrete cures.
1) Set Out And Establish The Reference Line
Drive two stout pegs at each end of the run. Stretch a string line between them at the exact face where the panels will sit. Keep the string clear of the ground so you can sight it easily. Use a second string for top height if that helps you visualize the finish.
2) Mark Post Centers And Check Panel Math
Standard panel widths vary by region and brand. Mark centers based on your panels and add one gate bay if needed. A long run often benefits from an expansion gap or a change of direction at a corner post, so plan breaks where they look natural.
3) Dig Post Holes To Proper Depth
A reliable rule is to bury roughly one-third of the post length. For a 1.8 m tall panel, that means about 0.6 m in the ground. Go wider than the post by at least 150 mm all around to allow gravel and concrete. Clean, vertical sides help the post stay plumb.
4) Add A Drainage Bed
Tip 100–150 mm of compacted gravel into the base of each hole. This helps shed water away from the wood and reduces frost lift in cold climates. Don’t skip this step; it keeps the base from sitting in a puddle.
5) Set The First Post Dead Plumb
Drop the post in, align the face to the string, and clamp a brace to hold it. Check with a level on two sides. Pour in fast-set mix or stiff concrete in lifts, trowel a slope at the top so rain runs away, then re-check plumb while it cures. Start and end posts must be spot-on; the rest follow their lead.
6) Fit Gravel Boards For Lifespan
With the first two posts set, install the base board. Concrete boards slot into slotted posts; timber boards screw to rails or sit in rebated posts. Keep ground level a touch below the top of the board so water drains away. The board creates a sacrificial buffer between wet soil and your panels.
7) Slot Or Fix Panels
Lift with two pairs of hands. Slot the panel into the post grooves or screw through treated battens into the post with exterior-grade fixings. Use packers to hold an even gap above the board and keep the top line level with the string. Work bay by bay, checking plumb and level often.
8) Cap And Seal
Tap on post caps once concrete has set. Seal any fresh timber cuts with brush-on preservative. Where you’ve trimmed a panel, coat the cut edge from all sides. Small touches like this delay rot and keep the color consistent.
Choosing Posts, Panels, And Hardware
Posts: Concrete posts set the pace for longevity and need little upkeep. Timber posts can look warmer, but they should carry a ground-contact rating and a clear label on the treatment level. If you trim a treated post, seal the cut end before it goes in the ground.
Panels: Solid lap or closeboard gives privacy and deadens sound; slatted and trellis styles let wind bleed through, which cuts strain on the line. Pick stainless or coated screws and brackets; they hold tight through wet seasons and don’t stain the wood.
Straight Runs, Corners, And Slopes
Straight runs: Keep the face aligned to one reference string, not the ground. Even small dips look fine when the face plane is true.
Inside and outside corners: Use a larger corner post or bolt two posts together back-to-back. Fix panels to each face so loads share the middle.
Slopes: You can step or rake. Stepping keeps panels level and creates a tidy “stair” look; great for steep yards. Raking follows the ground so the top edges run parallel with the slope; better for gentle grades and wind flow. Either way, keep gravel boards tight to the soil to avoid gaps.
Spacing, Depth, And Hole Sizes That Work
Use the guide below to size the core parts of the build. Local soil and wind can nudge these numbers, but this will get you close on most domestic sites.
| Element | Typical Range | Notes |
|---|---|---|
| Post Spacing | Panel width (1.8–2.0 m) | Measure your panels; keep bays consistent |
| Burial Depth | 1/3 of post length (≈0.6 m for 1.8 m high) | Go deeper in soft ground or windy spots |
| Hole Diameter | Post width + 300–350 mm | Allows gravel and concrete collar |
| Gravel Board Height | 140–150 mm | Keeps panels clear of splash and soil |
| Concrete Collar Height | 25–50 mm above grade, sloped | Sheds water away from the post |
Permits, Boundaries, And Neighbor Smiles
Before the first hole, scan the local rules on height next to highways and at the rear. Many councils set a lower cap next to a road and a taller cap elsewhere. If a property is listed or sits in a protected zone, rules can tighten. A quick check now avoids rework later.
Walk the line with your neighbor if the boundary is shared. Agree on the face side of posts, panel style, and any tight spots around sheds or trees. A friendly chat beats a boundary dispute.
Cutting, Treating, And Weather Protection
When you trim a panel or a rail, seal the new face with a compatible preservative before it goes outside. Use a brush or roller and give it time to dry. If you’re using ground-contact-rated timber posts, look for clear labeling on the treatment class. Fresh stain or paint needs a dry spell, so time your finish for a gap in the weather.
Wind, Drainage, And Garden Micro-Climate
Solid panels block wind, which can cause gusts to roll over the top. Slatted or ventilated panels bleed air and reduce pressure. That small change keeps plants happier and lowers strain on posts. Drainage matters too: keep soil from mounding against timber, and rake mulch back so water can escape along the line.
Gate Bays, End Stops, And Hardware Choices
Where a gate meets the run, set a beefier post and at least two bags of fast-set mix. Hang hardware on the stronger side of the opening. Fit a drop bolt into a concrete-filled sleeve so the latch side doesn’t drift. At the line’s end against a wall, use masonry anchors rated for exterior use and keep fixings off damp brick joints.
Common Mistakes And Easy Fixes
Wavy lines: The string sagged or posts moved during the cure. Add temporary braces at the top and mid-height, and re-check plumb often while setting.
Rot at ground level: Timber sat in wet soil. Add gravel boards, improve drainage, and seal cut ends. Where decay has started, trim back to sound wood, treat, and fit a board or shoe.
Panels rattle: Fixings undersized or spaced too far. Step up to longer screws, add washers where clips allow, and place fixings near rails, not just the thin laths.
Heave in winter: Water trapped around the base. Add a deeper gravel sump and re-form a slope on the concrete collar so meltwater runs away.
Time, Cost, And Effort Planning
A two-person crew can set six to eight bays in a day once holes are dug. Post-setting and cure time controls the pace, so stage the job: dig and set posts on day one; boards and panels on day two; caps, trims, and stain on day three. Tool hire for a weekend plus materials for a typical small yard (six bays, one gate) lands in a mid-range budget for most DIYers, with concrete posts costing more up front and paying back in service life.
Quick Reference: Step List You Can Print
- Mark the line and height with strings; confirm boundaries.
- Book a utility locate and wait for markings.
- Measure bays, mark centers, and dig to the right depth.
- Drop posts on a gravel bed and set them plumb in concrete.
- Fit gravel boards flush and keep soil just below the top edge.
- Lift panels into place, level, and fix with exterior-grade hardware.
- Seal cuts, add caps, and finish with stain or paint.
- Walk the line again a week later and re-tighten any fixings.
Why This Method Lasts
The combination of correct burial depth, drainage at the base, a protective board at ground level, and treated wood or concrete posts cuts the main failure points. Add tidy fixings and a sloped concrete collar, and you’ll keep water off the sensitive spots. A light annual wash and a fresh coat every few years will keep the line crisp and the color steady.
Check your local fence height rules and any limits near roads via official planning guidance where you live. In many places, boundary structures next to a highway have lower height limits than rear gardens; see the UK’s fences, gates and garden walls page for a clear example. Also, book an underground locate before you dig; in the United States, dial 811 before you dig to mark buried utilities.