Concrete vs Driven Fence Posts: When to Use Each Method

How you set your fence posts determines how long the fence stands. It's that simple. But contractors argue about concrete vs driven posts like it's religion.

The truth? Both methods work great — in the right conditions. The problem is using the wrong method for the situation. Here's when to use each, backed by real-world experience and code requirements.

Concrete-Set Posts: The Standard Method

Concrete-set posts are what most homeowners picture. Dig a hole, drop in the post, fill with concrete. But there's more nuance than that.

Wet-Set Concrete (Pre-Mixed)

The traditional method: mix concrete in a wheelbarrow or mixer, pour it around the post while it's braced, let it cure.

Process:

1. Dig hole (10-12" diameter, 1/3 of post length + 6" for gravel base)
2. Add 4-6" of gravel at the bottom for drainage
3. Set post and brace plumb
4. Mix concrete and pour around post
5. Crown the top to shed water away from the post
6. Let cure 24-48 hours before hanging fence

Pros:

• Strongest hold
• Works in any soil type
• Required by code in many jurisdictions
• Customer perception of quality is high
• Can fine-tune post position before concrete sets

Cons:

• Slowest method (mixing, curing)
• Heavy material handling (80 lb bags all day)
• Water needed on-site
• More expensive per post
• Can't easily adjust if you make a mistake

Dry-Pack Method (Pour Dry, Add Water)

Gaining popularity and many contractors swear by it. You pour dry concrete mix into the hole around the post and add water on top.

Process:

1. Dig hole and add gravel base
2. Set and brace post
3. Pour dry mix around post (fill to 3-4" below grade)
4. Slowly add water — the mix absorbs it and sets
5. Some brands (like Sika Fence Post Mix) are specifically designed for this

Pros:

• Faster than wet mix (no mixing)
• Less mess
• Expanding foam products set in minutes, not hours
• Good enough for most residential installations

Cons:

• Less control over mix quality
• May not fully hydrate in very dry conditions
• Some inspectors don't accept dry-pack for structural applications
• Expanding foam options are expensive ($10-15 per post vs $4-6 for concrete)

Driven Posts: The Fast Method

Driven posts are pounded directly into the ground using a manual post driver (sleeve), a pneumatic driver, or a skid steer attachment. No hole, no concrete.

Manual Post Driving

A steel sleeve that slides over the post. You lift and drop it to pound the post in.

Best for: T-posts (metal fence posts), small round posts, lightweight temporary fencing.

Not great for: 4x4 or larger wood posts, hard soil, deep sets.

Pneumatic/Hydraulic Post Driving

A gas-powered or hydraulic driver mounted on a skid steer, tractor, or standalone unit. These machines pound posts in seconds.

Best for: Chain link (round steel posts), farm fence, large-scale commercial, any job with 50+ posts.

Popular equipment:

• Skid steer mounted drivers (e.g., Eterra, Blue Diamond)
• Standalone drivers (e.g., Rhino, Shaver)
• Hand-held gas drivers (e.g., Titan post driver)

Pros:

• Extremely fast (a post every 1-2 minutes)
• No concrete cost
• No curing time — hang fence immediately
• Less material to haul
• Driven posts have excellent resistance to lateral loads (soil compacts around them)

Cons:

• Requires specific equipment ($3,000-$15,000 to buy, $200-$400/day to rent)
• Doesn't work in rocky soil (post hits rock and stops or bends)
• Post depth can be inconsistent
• Not accepted by all building codes for certain fence types
• Hard to get posts perfectly plumb
• Can split wood posts

Soil Types and Best Method

Soil is the single biggest factor in choosing your method.

Soil Type	Best Method	Notes
Sandy	Concrete (wet-set)	Sand doesn't grip driven posts well; concrete provides the anchor
Clay	Either works	Clay grips driven posts well; concrete also works but holes are hard to dig
Loam	Either works	Ideal conditions for both methods
Rocky	Concrete	Can't drive through rock; dig holes, remove rocks, fill with concrete
Gravel	Concrete preferred	Loose gravel won't hold driven posts; concrete fills the voids
Swampy/wet	Concrete (deep set)	Driven posts sink in saturated soil; concrete provides a stable footing
Frozen	Neither (wait for thaw)	Driving into frozen ground bends posts; concrete won't cure properly below 40°F

Pro tip: If you're new to an area, ask a local excavation contractor about soil conditions. They know where the rock, clay, and water table are before you find out the hard way.

Frost Line Considerations

In cold climates, the frost line determines minimum post depth. If your post footing sits above the frost line, freeze-thaw cycles will heave it out of the ground.

Region	Typical Frost Line	Minimum Post Depth
Southern US (FL, TX, AZ)	0-6"	24-30"
Mid-Atlantic (VA, NC, TN)	12-18"	30-36"
Midwest (OH, IL, IN)	30-36"	40-42"
Northern US (MN, WI, MI)	42-60"	48-54"
Canada	48-72"	54-60"+

For concrete-set posts: The bottom of the concrete footing must be below the frost line.

For driven posts: The post itself must extend below the frost line. In deep-frost areas (40"+), this means very long posts.

Wind Load Impact

Wind is the #1 killer of fences. Your post-setting method needs to handle the wind load your fence will see.

Solid fences (privacy, vinyl) catch the most wind. A 6-foot solid privacy fence in a 70 mph gust puts roughly 15-20 pounds of force per square foot on the fence. That's 500+ pounds of lateral force on each post.

Open fences (chain link, split rail, aluminum picket) let wind pass through. Much lower wind loads.

Method comparison for wind resistance:

Method	Wind Resistance	Best For
Wet-set concrete (10" diameter, 36" deep)	Excellent	Any fence type, any wind zone
Dry-pack concrete	Good	Residential in moderate wind areas
Driven posts (round steel)	Good to excellent	Chain link, open fences, non-privacy
Driven posts (wood)	Moderate	Farm fence, split rail, light-duty

High-wind areas (coastal, Great Plains): Use wet-set concrete, minimum 10" diameter holes, deeper than standard. Consider 4x6 or 6x6 posts for solid fences.

Cost and Time Comparison

Here's the real math, per post:

Method	Material Cost/Post	Labor Time/Post	Total Installed Cost/Post
Wet-set concrete (manual dig)	$5-$8 (concrete + gravel)	20-30 min	$18-$30
Wet-set concrete (auger)	$5-$8	10-15 min	$12-$20
Dry-pack concrete	$5-$8	10-15 min	$12-$18
Expanding foam	$10-$15	5-10 min	$14-$22
Driven (pneumatic)	$0	2-5 min	$3-$8
Driven (manual)	$0	5-10 min	$5-$12

On a 40-post job, the difference between concrete and driven can be:

• Concrete: $480-$800 in materials + 6-12 hours labor = $800-$1,600 total
• Driven (pneumatic): $0 in materials + 1.5-3 hours labor = $120-$320 total

That's a significant cost difference. If driven posts are appropriate for the job, your margins improve dramatically.

Code Requirements

Always check local building codes. Common code requirements related to post setting:

• Residential fences over 6': Many jurisdictions require a building permit and specify concrete footings
• Pool fences: Almost always require concrete-set posts to specific depths
• Fences in rights-of-way: Usually require engineered footings
• Commercial fences: Often specify concrete in the project specs
• Wind zones (Florida, Gulf Coast): Enhanced post-setting requirements are common

The safe bet: When in doubt, set in concrete. No inspector has ever rejected a properly set concrete footing. They have rejected driven posts.

Educating Your Customers

Customers ask about this. They see YouTube videos of driven posts and wonder why you're quoting concrete. Here's how to explain it:

• "Concrete-set posts last 25-30 years. It's the standard because it works."
• "For your fence type and our soil conditions, concrete is the right choice. Here's why..."
• "Driven posts work great for farm fencing and chain link, but for a privacy fence that catches wind, concrete is the way to go."

Don't badmouth driven posts. Just explain when each method makes sense. Customers respect contractors who can explain their process.

---

FenceCalc calculates concrete quantities per post based on depth, diameter, and fence type — so you always know your exact material costs.

Try FenceCalc free for 14 days →