Fencing and Windbreak Materials Compared: Timber, Hurdle, Mesh and Hedging

For shelter from wind, choose a barrier that filters it rather than blocks it: windbreak mesh, a woven hurdle, chestnut paling or hit-and-miss panelling. A solid panel stops wind but throws turbulent eddies behind it, so the kale on the windward row can still be scorched and the bean canes still leaning. The RHS target is a barrier that filters 50 to 60% of the wind, which slows it over a distance of about ten times the barrier's height, without the turbulence. Most people reach for solid featherboard panels from the builders' merchant because that is what "a fence" means in most heads. It isn't always wrong, but the materials that look flimsiest on the shelf are often the ones doing the real work.

The physics is covered in shelter belt planting for exposed coastal and island gardens. In short: a solid barrier causes turbulent eddies on its leeward side, while a semi-permeable structure slows the wind over a longer distance. On the west coast, the Hebrides and the Northern Isles that is the difference between a barrier that earns its keep against a near-constant Atlantic wind and one that just moves the damage a few metres back. Which materials deliver that filtering? Prices below are typical supplier figures, so check current ones.

Solid timber panels: closeboard, larch lap, hit-and-miss

This is what most people install, because it is sold everywhere, goes up in a weekend, and gives privacy, a defined boundary and shelter for the first metre or two behind it. But a flat, unbroken panel is a solid barrier. One UK fencing manufacturer, writing for installers, puts it plainly: "In wind, a solid fence panel with no gaps will act like a sail", with maximum load on posts and panels and eddies on the leeward side that damage planting close to the fence. The same source recommends semi-solid designs, Venetian or hit-and-miss panels with overlapping slats and air gaps, which reduce both structural load and leeward turbulence.

The trade-off is real: closeboard and lap panels give privacy and an immediate barrier, but they concentrate wind stress and turbulence, and in a really exposed spot that can flatten the plants nearest the fence.

• Closeboard (feather-edge) panels: a 1.8m-high, 1.83m-wide panel from a UK fencing manufacturer runs to roughly £60 to £75 including VAT, supply only. Well-installed closeboard on concrete posts with a gravel board carries a manufacturer guarantee of up to 25 years against rot and insect attack.
• Larch lap panels: £20 to £50 per panel, but shorter-lived: untreated lap panels can start deteriorating within 5 to 8 years, and regular preservative treatment (every 2 to 3 years) extends that to 10 to 20.
• Hit-and-miss or Venetian panels: priced like closeboard, lasting 15 to 25 years, with a permeability gap, the closest a solid-timber product gets to the 50 to 60% target, though makers don't publish an exact porosity.

Posts usually fail before boards. Concrete them in and keep the base off wet soil, with a gravel board rather than timber touching the ground: that does more for lifespan than the timber grade.

Post-and-rail: a support, not a windbreak

Post-and-rail is an open structure of two or three rails on posts, built to mark a boundary, so alone it does very little against wind. Its real job is as a frame to stretch windbreak mesh across, or to support a hedge while it establishes. It is cheaper per metre than panels, since there is far less timber in it. A pressure-treated run is commonly rated at 15 to 20 years, with the softwood rails usually needing replacement before the posts.

Woven willow and hazel hurdles

Hurdles embody the permeable-barrier principle: a hand-woven lattice of rods is full of small gaps. The RHS names woven willow or hazel hurdles as working well. Hurdle-making is an old British craft tied to coppice woodland, and both are still hand-woven by specialist makers.

Willow is typically rated at 5 to 8 years with proper maintenance, hazel (thicker, sturdier rods) at 10 to 15, according to one UK hurdle maker, with continuous woven fencing running roughly £4 to £14 per square foot: willow cheaper up front, hazel at a premium for longer life. An occasional coat of linseed oil or a wood preserver extends life. A hurdle in a wet, exposed spot may need replacing within five years, while one in a drier, more sheltered position can last close to ten, and how wet the post bases stay matters as much as the treatment. Hurdle-making is historically English, from the southern and Midlands coppice districts, and most makers, Scottish stockists included, ship nationally from specialist workshops, so budget for delivery and lead time.

Chestnut paling

Cleft chestnut paling, split stakes wired together in rolls, is the other traditional permeable option, built for boundary and stock control rather than ornament. The pales are spaced at roughly 50 to 75mm, letting wind through by design while turning back smaller wildlife and keeping people and larger animals out. Sweet chestnut's tannin makes it rot-resistant without chemical treatment. Suppliers rate it at 10 to 15 years or more, depending on site, and price rolls (commonly 5 to 10m) at roughly £86 to £164 excluding VAT, with two-wire versions cheaper than three-wire. Put stakes in about every 2m and main posts every 10m or at any change of direction. It needs no separate frame, only stakes driven into the ground, which suits it where a post-and-rail frame would be extra work.

Windbreak mesh netting

Mesh is the material that matches the shelter-belt physics most literally, because it is sold to a stated porosity. The percentage on the label matters: too low and it barely filters, too high and it acts like a solid panel.

One UK netting supplier sells its standard knitted windbreak netting on the claim that it will "reduce windspeed by about 50% without eddies", the same turbulence-avoidance logic the RHS applies to hedges and hurdles. UV-stabilised HDPE netting is commonly rated for up to around 10 years outdoors, but on salt-spray sites in the west, the Hebrides and the Northern Isles the shorter end of the range is the realistic planning figure. Suppliers sell it by the metre run, roughly £1.35 per metre for 1m-wide material up to about £5.30 per metre for 3m-wide, with cheaper bulk rolls, making it the cheapest way to hit the filtering target, provided the tensioning and fixings are done properly.

Mesh is not freestanding, which is why it pairs with post-and-rail. A UK windbreak-kit retailer recommends wooden posts about 1.2m apart, the net kept taut and aligned along the top edge and fixed through the reinforced eyelets with galvanised staples or netting clips. Under-tensioned mesh sags, flaps and wears at the fixings. Salt-laden air corrodes galvanised staples faster than inland, so stainless steel fixings are worth the extra on a salt-exposed run, because a failed fixing brings the whole tensioned edge down.

Cost, lifespan and effort compared

Site exposure, ground and maintenance shift real-world lifespan up or down from these ranges.

Before you buy: height limits, deer, treated timber and snow

Planning permission and height. In Scotland a garden fence or wall up to 2 metres generally doesn't need planning permission under permitted development. The limit is 1 metre where it faces a road or extends past the front or side of the house, and the rules don't apply in a conservation area or the grounds of a listed building. You can replace an existing fence with one of equal height even if it exceeds the limit, outside those areas. You may also need building regulation approval or the landowner's consent, so check with the council before ordering anything taller. Confirm with your neighbour whose side of a shared boundary is whose before building on it: a boundary dispute is a more common snag than any material choice here.

Deer, rabbits and livestock. Roe deer are the species most likely to need keeping out of a Scottish garden near woodland or farmland. Deer fencing is recommended at 1.8m for roe and other larger deer (1.5m for muntjac, which have little presence in Scotland), using heavy-duty wire mesh pegged tight to the ground. See keeping deer out. Rabbits, a common problem on Scottish allotments and gardens, need a different spec: 2.5cm wire mesh at 120 to 140cm high, with the bottom 30cm buried and the lowest 15cm bent outwards to stop tunnelling, and gates kept closed. A low windbreak is neither tall nor fine enough to double as deer or rabbit protection, so if either is a risk, that mesh and height becomes the limiting factor, often with a rabbit-proof skirt added at the base.

Treated timber near edible beds. Timber options are normally pressure-treated to survive outdoors. The older arsenic and chromium (CCA) preservative was banned from sale across the UK from 1 September 2006, though CCA wood already in use isn't affected. Current treatments are water-based (copper azole, alkaline copper quaternary, boron) or solvent-based, and creosote is restricted to professional use. Wood treated before construction, rather than brushed on afterwards, is the standard advice near a growing bed.

Snow. Snow loading is uneven across Scotland but real in most gardens for part of winter:

Inland or upland, mesh netting sags or tears under snow load if it isn't cleared promptly, and woven hurdles can lean or break, since neither is rigid. A solid or rigid timber panel avoids this failure, one of the few points in its favour.

Which material for which situation

A cheap, quick fix for an allotment plot: windbreak mesh on a simple post-and-rail frame, with the lowest cost per metre, a known porosity, and easy to take down if the plot changes. It gives no privacy or finished look.

A garden boundary needing privacy plus some wind reduction: hit-and-miss or Venetian panelling reads as a normal fence, gives privacy and filters rather than blocks. Chestnut paling is the permeable alternative that doubles as a stock- or pet-proof boundary.

A coastal or seriously exposed site: mesh at 50 to 60% porosity, properly tensioned on a post-and-rail frame, is engineered to the principle used for hedges: the most leeward shelter for a given height with the least turbulence. A hazel hurdle does the same job in a more traditional look, with a shorter life and higher replacement labour. On the very worst sites, an open Orkney or Shetland croft or an unsheltered headland, a solid dry-stone dyke works by mass instead of filtering, the opposite principle, and is a traditional local answer when living shelter isn't achievable soon. The Dry Stone Walling Association gives roughly £120 to £220 per square metre for a new wall where stone must be bought in, and £60 to £100 where stone is to hand for a rebuild, built by a skilled waller, without mortar or a concrete foundation, and most dry-stone walls in the British Isles have lasted hundreds of years, which no timber, hurdle, paling or mesh option approaches.

The longer term: every built barrier needs eventual replacement. A living hedge, covered in the hedge planting species guide, gets more effective over time rather than less, so treat a built barrier as what buys a hedge time to establish. Once shelter is up, top 5 crops for exposed, windy gardens covers what to grow in front of it.

Common questions

Sources