A predator proof chicken coop starts with one material swap most new flock owners miss: replacing chicken wire with half-inch hardware cloth. Chicken wire keeps chickens in, but it does almost nothing to keep predators out. Raccoons, dogs, and even determined foxes can tear through it. Every opening, surface, and seam of your coop is a potential entry point, and building a truly secure setup means addressing walls, floors, underground access, overhead threats, and doors as a complete system.
Why Hardware Cloth Is Non-Negotiable
Hardware cloth is welded or woven wire mesh in a square grid, manufactured from a much heavier gauge steel than chicken wire. It comes in galvanized, stainless steel, and bare steel varieties. For predator proofing, 1/2-inch galvanized hardware cloth is the standard recommendation for walls and run enclosures. If you’re in an area with weasels or snakes, go with 1/4-inch mesh instead. Weasels can squeeze through openings as small as one inch, and snakes can slip through anything larger than half an inch.
Wire gauge matters as much as mesh size. The lower the gauge number, the thicker and stronger the wire. Aim for 19-gauge or thicker. And not all galvanized cloth is equal: look for “galvanized after welding” (GAW) rather than “galvanized before welding” (GBW). The GAW process coats the weld joints, which means better rust resistance at every connection point where moisture would otherwise eat through first.
Standard chicken wire (hex netting) is fine for a garden fence or a temporary barrier to keep your flock out of the tomatoes. It is not security fencing. A raccoon’s dexterous hands can peel it apart in minutes, and a dog can push right through it.
Stopping Digging Predators With an Apron
Foxes, coyotes, raccoons, and dogs will all dig under a fence line. The most effective defense isn’t burying wire straight down, which is labor-intensive and easy for animals to follow. Instead, install a horizontal apron (also called a skirt) that extends outward from the base of your coop or run walls.
An apron works because a digging predator starts right at the fence line and digs downward. It hits the horizontal wire and can’t get past it. The animal doesn’t think to back up two feet and start over. An 18- to 24-inch wide apron is the consensus among experienced coop builders. Two feet is ideal, but 18 inches works if material is limited. Bury the apron a couple of inches below grade so grass grows over it, anchoring it further and keeping it out of sight.
Use the same 1/2-inch hardware cloth for the apron. Attach it securely to the bottom of your wall framing or fence posts with screws and washers, not just staples. Poultry staples can be pried loose by raccoons. For the outer edge, landscape staples or stakes driven through the mesh into the ground will hold it flat until vegetation locks it in place.
Choosing the Right Floor
The floor of the coop itself is the most overlooked entry point. You have four practical options, each with real tradeoffs.
Concrete is the gold standard for predator resistance. Nothing digs through it, and it’s easy to clean and disinfect. The downside is cost and permanence. If you live in an area with rats, consider pouring a “rat wall” by digging a trench two feet deep and six to eight inches wide around the pad perimeter before pouring. The concrete fills both the trench and the pad, creating an underground barrier rats won’t dig past. A cheaper alternative: mix dry cement with sifted soil in a 1:3 ratio, spread it four to six inches thick on leveled ground, tamp it smooth, mist with water, and let it cure for several days. It’s not as strong as a poured slab but far better than bare dirt.
Plywood over a raised frame is the most common DIY approach. It’s affordable, easy to build, and simple to clean with bedding on top. Plywood keeps predators and rodents out as long as it stays intact, but it will rot over time if moisture gets trapped underneath. Elevating the coop a foot or more off the ground helps air circulate under the floor and extends its lifespan.
Hardware cloth flooring on an elevated coop lets droppings fall through and provides excellent predator protection from below. The catch is that wire can be hard on chicken feet over time, and droppings often get stuck in the mesh rather than falling cleanly through. Never use chicken wire for flooring. It’s too weak and will tear under the weight and movement of your birds. Half-inch welded wire or hardware cloth, securely attached to the frame, is the minimum.
Dirt floors are the least secure option. If you go this route, laying hardware cloth flat on the ground under several inches of soil and bedding creates a buried barrier. But it’s still the weakest link compared to concrete or an elevated structure.
Covering the Run From Above
Hawks, owls, and eagles are efficient chicken killers, and an open-top run is an invitation. You have two main options for overhead protection: hardware cloth panels or bird netting.
For smaller runs, a rigid roof of hardware cloth or welded wire attached to a frame is the most secure choice. It stops aerial predators and also prevents raccoons and cats from climbing over. For larger runs where a rigid roof isn’t practical, heavy-duty bird netting with a mesh size of one to two inches works well. Look for UV-resistant material rated for outdoor exposure. Secure the netting with cable ties to a wire or rope grid stretched across the top of the run, and anchor the edges firmly to the frame. Netting that sags creates pockets where a hawk can push through, so keep it taut or support it with intermediate lines.
If you free-range during the day and only need nighttime protection, a fully enclosed coop with a solid or hardware-cloth roof is sufficient since hawks and eagles hunt during daylight. Owls are nocturnal, but they’re primarily a threat when chickens roost in exposed areas rather than inside an enclosed coop.
Securing Doors and Latches
Raccoons can open simple latches, turn knobs, lift hooks, and pull handles. Any latch on your coop should require two separate motions to open. A carabiner through a hasp, a spring-loaded bolt, or a padlock are all effective. Avoid simple hook-and-eye latches or gravity latches that a raccoon can flip with one hand.
Automatic coop doors are increasingly popular and can be highly predator resistant when installed correctly. The key details: mount the door and its lifting mechanism on the inside of the coop so there’s no exposed edge for a raccoon to grip. The door should slide in tracks on both sides and at the bottom, and it should close past the opening by at least an inch in every direction. This prevents anything from bowing the door inward and popping it out of its tracks. A door mounted on the outside with an exposed cable or lip at the top is an easy target for raccoons.
Automatic doors that operate on a light sensor or timer ensure the coop closes at dusk even if you’re not home. This single upgrade eliminates the most common cause of predator losses: forgetting to close up at night.
Ventilation Without Vulnerability
Chickens need substantial airflow to stay healthy, especially in summer and in humid climates. But every vent, window, and soffit opening is a potential entry point. The rule is simple: any opening in your coop larger than 1/4 inch should be covered with hardware cloth.
For windows, attach hardware cloth to the inside of the frame with screws and fender washers. This way, even if a predator tears off an exterior shutter or screen, the hardware cloth remains secured to the structural frame. Ventilation openings near the roofline are ideal because they allow warm, moist air to escape while being harder for ground predators to reach. Cover these with 1/4-inch mesh if mice and small snakes are a concern in your area, or 1/2-inch mesh as a minimum.
Don’t seal your coop too tightly in the name of predator proofing. Poor ventilation causes ammonia buildup, respiratory disease, and frostbitten combs in winter far more often than predators cause losses in a well-secured coop. Hardware cloth lets you have both: full airflow with a physical barrier that even the smallest predators can’t breach.
Common Weak Points to Check
- Gaps at wall-to-floor joints: Even a concrete pad can have gaps where it meets the coop walls. Fill these with hardware cloth or cement.
- Rotting wood: A raccoon or possum can tear through soft, rotting boards in minutes. Inspect framing annually and replace compromised sections.
- Pop doors that don’t seat fully: A half-inch gap at the bottom of a sliding door is enough for a weasel or snake to enter.
- Stapled-on mesh: Poultry staples are the weakest fastener for hardware cloth. Use screws with fender washers every four to six inches for permanent installations.
- Nesting box lids: External nesting boxes with hinged lids need the same two-step latch system as your main door. Raccoons learn quickly that these open.
Walk around your coop at night with a flashlight and look for any gap where light passes through. If light gets through, a determined predator will find it. Predator proofing isn’t a one-time project. It’s an ongoing habit of inspection and maintenance that keeps your flock safe season after season.