How to Build a Pig Fence? | Sturdy Enough to Hold

Pigs test fences differently than any other livestock—they push, root, and search for weak spots. A fence built for cattle or horses will fail within days. The right pig fence starts with the right materials and a layout planned around the pig’s natural behavior: low to the ground, rigid where they push, and electrified where they learn to respect the boundary.

Materials That Work for a Pig Fence

The three proven approaches are woven wire fencing, rigid hog panels, and electric netting. Each has a best-use scenario, and the strongest perimeter fences often combine more than one.

• Woven wire (hog fencing): Bekaert’s Solidlock Pro in 1348‑3 (12.5 gauge, 3‑inch spacing) is a robust choice for permanent perimeter fences. Tighter vertical spacing stops piglets from squeezing through.
• Rigid hog panels: Standard panels run 16 ft long by 34 inches tall, made from 4‑ to 5‑gauge galvanized steel. They require metal posts every 3–4 feet to resist bowing.
• Electric netting:

For feral hog exclusion, high‑tensile woven wire with Class III galvanized coating at 170,000 psi tensile strength is the standard, per Alabama Soil and Water Conservation guidance.

Fence Height and Buried Depth Requirements

Hogs push low and dig down. A perimeter fence should stand at least 4 feet above ground, while electric or netting systems can work at 24–30 inches if the bottom wire is placed 6 inches or less from the soil. To stop rooting, bury the fence bottom at least 12 inches underground; some builders bury panel sections 1–2 feet deep for areas with persistent digging pressure.

If burial is impractical, run an inside offset electric wire 6–9 inches above ground on the fence’s inner side. This wire trains pigs to keep their noses away from the base. An additional strand at 12 inches provides a second deterrent layer.

Post Spacing, Bracing, and Gate Setup

Spacing depends on the fencing type. Woven wire allows posts every 12–20 feet (Bekaert’s range for hog wire). Rigid panels need closer spacing—every 3–4 feet—to keep the steel from bowing under active pushing. Electric netting systems like Pig QuikFence specify 12.5 ft spacing with the included plastic posts.

Corner and gate posts require H‑bracing to keep the fence from pulling crooked over time. Set these posts first, using the 3‑4‑5 rule to square corners. The gate opening must fit the gate snugly; any gap larger than a pig’s snout will be exploited. Install the latch on the outside and use a heavy‑duty model pigs cannot lift or push through.

When attaching panels to posts, secure fasteners on the outside of the enclosure so sharp ends face away from the animals. Avoid treated wood for posts where pigs might chew—ingested chemicals can contaminate meat.

Electric Offset and Training

An inside electric strand is the single most effective addition to any pig fence, but placement matters. The wire should sit 6–9 inches above ground on the inside face of the permanent fence. Two strands at 6 and 12 inches offer an even stronger deterrent.

Training matters: pigs learn best when they first encounter the electric wire in front of a solid barrier, so they stop on contact rather than bolting through. Introduce them to the charged wire inside a small pen before turning them into the full pasture.

If you’re comparing materials and ready to choose, our tested roundup of the best fencing for pigs breaks down what works for backyard setups versus large pasture systems.

Common Mistakes That Let Pigs Escape

• Too‑low fence height or leaving the bottom edge exposed above ground—pigs root under overnight.
• Weak gate latches or oversized gate gaps—a determined pig will push through in minutes.
• Skipping corner bracing—unbraced posts shift under pressure, loosening the entire run.
• Electric wire placed too high or too far from the fence—the pig’s snout misses the shock entirely.
• Inadequate post spacing for panel fencing—the steel bows outward and the pig walks through.
• Failing to maintain grounding and fence tension—electric systems lose effectiveness when the charge drops or the wire sags.

The public land‑grant guidance document USDA NRCS’s fence fact sheet details proper post depth, anchoring, and bracing for permanent fences. A well‑built pig fence that follows these specs—tight to the ground, braced at corners, and electrified on the inside—will hold sows, growers, and even feral hogs reliably for years.