When I started as a fence netting supplier back in 2012, I thought the biggest challenge was just selling durable, affordable netting. Now, after thousands of customer projects—from backyard gardens in rainy Pacific Northwest towns to livestock enclosures in Florida’s hurricane-prone pastures—I know the opposite is true. It’s helping people install that netting right, especially in wet areas, that makes all the difference. A fence in a swampy low spot or a yard that floods every spring isn’t just an eyesore; it’s a hazard. I’ve seen netting pull free from posts, rot through in a single season, or sag so bad it’s useless before the year is out, all because someone skipped a few key steps specific to wet ground. If you’re dealing with consistent moisture, frequent rain, or even seasonal flooding, this guide isn’t just a set of instructions—it’s lessons I’ve learned from customers who fixed those mistakes, and from our team here, who tests every netting product we sell in damp, demanding conditions. Fence Netting
First, let’s talk about why wet areas are such a specific beast. Most standard fence installation guides assume soil that drains, that stays firm enough to hold a post for years. Wet soil? It’s different. Soggy clay expands when it freezes in winter and softens in summer; peat holds water like a sponge; areas near ponds or streams have constant moisture that seeps into wood and metal over time. Even plastic netting, which people often write off as “indestructible,” can degrade faster in constantly damp, algae-rich environments—algae traps moisture against the netting, accelerating UV damage that turns it brittle within a couple years instead of five or six. That’s why the first step to installing a fence in a wet spot isn’t grabbing a post hole digger and diving in. It’s prepping the site like your fence’s lifespan depends on it, because it does.
Start with site assessment, not measurements. I can’t tell you how many customers show up to our warehouse with a tape measure, ready to buy netting, and don’t mention the low spot in their yard that floods for three days every April. That’s a critical detail. First, map out three things: water flow, soil type, and elevation changes. For water flow: stand at the site during a light rain (or check your local weather app’s historical data for seasonal flooding) and watch where the water goes. You want your fence to run perpendicular to the natural flow, not parallel. If you run it parallel, you’ll end up with water pooling behind the posts, constantly soaking the bases, and that’s the #1 cause of post and netting failure in wet areas. We had a customer in Ohio last year who installed a garden fence parallel to his backyard’s drainage ditch; by the end of summer, half his posts were leaning, because the water had softened the soil around their bases and shifted them sideways. Fix that by running the fence line so water flows under or around it, not through post holes. For elevation changes: if your site drops more than six inches over 10 feet, you’ll need to build stepped posts, not a straight, level fence. Wet soil shifts with elevation drops, so a straight fence will pull apart at the lowest point within a year.
Next, soil testing. You don’t need a fancy lab kit for this—do the squeeze test. Grab a handful of soil from the post hole spot, squeeze it tight, then open your hand. If it stays in a solid clump that doesn’t crumble when you poke it, that’s clay, which holds water and expands. If it feels like damp sand and falls apart immediately, that’s well-drained sandy soil, which is fine. If it feels like spongy, dark peat and falls apart in flakes, that’s another wet-area special, especially common near forest edges or bogs. Clay and peat both need different post prep than sandy soil, and that’s where most people go wrong. For clay: it’s firm, but when it’s wet, it exerts pressure on posts as it freezes and thaws. For peat: it’s so soft posts will settle over time unless you stabilize them.
Now, the big part: post installation, which is the backbone of any wet-area fence. I always tell customers, if your posts fail, your fence fails, full stop. Don’t cut corners here. First, choose the right posts for wet areas. This isn’t the time for pressure-treated pine that’s rated for above-ground use only. Pressure-treated pine that’s only ground-contact rated? That’s made to sit in dirt for a few years, not constantly soggy dirt. Rot-resistant options like cedar, redwood, or heat-treated pine that’s specifically rated for permanent water contact? Those work. Or, if you want zero maintenance, metal posts—galvanized steel or aluminum, not the cheap uncoated steel that will rust through in two years. At our company, we recommend metal posts with a powder-coated finish for wet areas; I’ve seen them hold up for 10+ years in flood zones, no rot, no warping, no settling.
Once you’ve got your posts, dig holes that are bigger and deeper than you’d think. For standard, well-drained soil, you dig a third of the post’s length into the ground. For wet areas, dig half the post’s length, minimum. So if you’re using a 8-foot post, dig at least 4 feet deep. For really soft soil, like peat, dig 5 feet deep. The hole diameter? At least three times the width of the post, not twice. Why? You’re not just putting the post in a hole and filling it back up. You’re creating a stable base that won’t shift.
Here’s the step that most people skip, and it’s a game-changer for wet areas: the gravel base. After you dig your hole, pour 6 to 10 inches of crushed stone or fine gravel into the bottom. Not pea gravel—pea gravel is too small and packs tight, trapping water. Crushed stone, ¼ to ½ inch in size, lets water drain through, away from the post base. That gravel layer acts like a drain for the post, which is sitting in the wettest part of the soil. If you skip this, water will pool at the bottom of the post hole, seep into the wood or metal, and cause rot or rust fast. I had a customer in Louisiana call me three years ago, saying his brand new cedar fence posts were rotting in a year; when I asked about his installation, he said he just dug the holes, set the posts, and filled them with dirt. We went out, pulled up the posts, and the entire bottom 18 inches was soaked and rotted. He added 8 inches of gravel to each post base, re-set the posts, and 5 years later, they’re still perfect.
Next, backfilling the hole. This isn’t just regular dirt. If you used native clay soil to fill the hole, that’s bad—clay traps water. Instead, backfill with a mix of 50% native soil and 50% the same crushed stone you used for the base. Tamp it down in 6-inch layers, so every layer is firm but not compacted. Don’t over-tamp, though—you want enough give so the post can shift with the soil, but not so much it moves. For extra stability in really soft areas, you can add a metal bracket or concrete footing? Wait, no—wait, concrete can trap moisture too, right? If you use concrete for posts in wet areas, you have to leave a ½ inch gap between the concrete and the post, to let air circulate and moisture escape. Or, better yet, for most residential projects, stick to the gravel backfill—it’s lighter, easier to adjust if you ever need to move a post, and it drains way better. For livestock enclosures in wet pastures, we recommend using metal T-posts instead of wood posts, and we always tell customers to drive them 4 feet deep, because those posts get pushed around by cows, and wet soil makes that even more common.
Now, the netting itself. Not all fence netting is made for wet areas, either. A lot of customers come in wanting the cheapest plastic netting, but that’s a mistake for damp places. Cheap plastic can become brittle when exposed to constant moisture and algae, and it breaks easily in heavy rain or wind. At our company, we stock two types of netting specifically for wet zones: high-density polyethylene (HDPE) netting with a UV-stabilized coating that resists algae and moisture, and galvanized steel wire netting for permanent, heavy-duty applications. If you’re doing a garden fence, HDPE is fine—lasts 5-7 years in wet areas, vs. 2-3 years for cheap plastic. If it’s a livestock or wildlife fence, go with galvanized steel, which will last 15+ years even in standing water.
Installing the netting in wet areas has its own rules, too. First, don’t stretch it too tight. I know, everyone says “stretch fence netting tight” to avoid sag. But in wet areas, the netting will absorb a little moisture, expand slightly, then contract when it dries. If you stretch it tight now, it will pull away from the posts within a few months when it shrinks back. Leave about 5% slack in the netting—enough so it’s not sagging in the middle, but not so much it bags in the rain. That’s a balance, I’ll admit. I always tell customers to stretch it tight enough that a finger can fit between the netting and the tension line, not their whole hand.
Second, the bottom edge of the netting is extra important in wet areas. Standard installation says to bury the bottom 2-3 inches of netting to stop small animals from getting under, but in wet areas, that buried part will sit in mud and water, rotting or rusting fast. Instead, if it’s a garden netting for rabbits or deer, leave the bottom 6 inches of netting unfurled, and weigh it down with heavy landscape staples every 12 inches, or with rocks along the base of the fence line. That way, no part of the netting is sitting in the mud. If you need to keep very small animals out, you can also add a 12-inch apron of netting at the bottom, pegged flat on the ground—small animals can’t get under that, and it’s all above the mud line. For livestock netting, same rule: don’t bury the bottom. Use heavy-duty staples or metal clips to attach the bottom edge to the posts, and if you have cows or horses that might push on it, add a secondary support wire at the bottom, strung between the posts, so the netting is clamped to it, not just sitting against the soil.
Wait, let’s talk about drainage for the fence line itself. Even after you install it, rain and runoff will hit the fence. If you have a gate, make sure the gate’s bottom is 2 inches above ground level, not touching the dirt. If it sits in mud, it will rust or warp, and the latch will stop working. For longer fence lines, every 50 feet or so, dig a small French drain—just a trench filled with gravel running parallel to the fence line, 6 inches away from the posts. That catches any runoff that would otherwise pool at the base of the posts, and directs it away from the fence. We did that on a customer’s 100-foot backyard fence in Portland, where it rains 8 months a year, and they’ve had zero post or netting issues in 4 years, whereas before that, their old fence rotted through every 2 years.
Maintenance is the final piece, and it’s simpler than you think, but critical. Every spring, after the last flood or heavy rain, walk the fence line and check a few things: post bases for standing water, netting for sag or damage, staples or clips that have come loose. If you see a spot where water is pooling around a post, dig a small trench to drain it, and add a little extra gravel if the base is soft. If there’s algae building up on the netting, you can wash it off with a mild bleach solution (1 part bleach to 10 parts water) once a year—algae traps moisture, so removing it extends the netting’s life. For metal posts, give them a light coat of rust-resistant spray every 3 years, especially if they’re near salt water (salt makes rust way faster in wet areas). For HDPE netting, if a small spot tears, you can patch it with a plastic repair patch, same as you’d patch a pool liner—no need to replace the whole thing, which saves money.
I know this sounds like a lot, but the good news is, once you get it right, a wet-area fence will last twice as long as a standard one, with barely any maintenance. I’ve had customers come back to me 10 years later, buying replacement netting because their old one was still going strong, after following these steps, vs. a neighbor who replaced his fence three times in that same period, because he skipped the gravel and buried the netting in mud.
Here’s the thing: wet area fence installation isn’t about being fancy. It’s about working with the water and the soil, not against them. At our company, we don’t just sell fence netting—we sell solutions for places that are hard to work with, because we’ve seen what happens when people try to install a standard fence in a swampy yard or a flood-prone pasture. We test every product we stock in our own test plots, which are intentionally watered to mimic wet conditions, so we know exactly what will hold up. If you’re planning a fence in a wet area—whether it’s a garden, a livestock enclosure, or a wildlife barrier—don’t guess, don’t cut corners.
If you have questions about which netting is right for your site, need help figuring out post depth for your soil type, or want to order high-quality, wet-area-specific fence materials, our team is here to help. We work with residential customers, farmers, landscapers, and property managers all over, and we can guide you through every step of the installation, from site assessment to post-purchase maintenance tips. Just reach out to our team to discuss your project details.
Slope Protection Net References:
- American Fence Association. (2021). Best Practices for Fence Installation in Moist and Flood-Prone Areas. Fence Industry Technical Manual.
- University Extension of the Pacific Northwest. (2020). Soil Characteristics and Fence Post Stability in Soggy Clay and Peat Soils. Agricultural Guide Series No. 47.
- International Code Council. (2019). Residential Fence Installation Standards for Seasonal Wet Zones. Residential Building Code Supplement.
Anping Chengshuai Slope Protection Engineering Manufacturer
As one of the most reliable fence netting manufacturers and suppliers in China, we have world-leading production equipment and strong manufacturing capabilities. Please rest assured to buy cheap fence netting for sale here from our factory. For price consultation, contact us.
Address: 200 meters east of Wanghulin Village, Anping County, Hengshui City, Hebei Province, China.
E-mail: elfwangwang@gmail.com
WebSite: https://www.chengshuaislopeprotection.com/
