DIY Concrete Fence Posts (Setting Posts)

DIY Concrete Fence Posts (Setting Posts): Complete Guide

Setting fence posts in concrete requires proper depth, base, and finishing. Dig 1/3 of post length deep. Add 6 inches gravel. Set post. Fill with fast-setting concrete. Slope top to shed water. Following these steps ensures strong, durable fence posts.

Step 1: Dig Hole (1/3 Post Length Deep)

Proper depth is critical:

• 1/3 rule: Hole depth = 1/3 of post length above ground
• Example: 6-foot post = 2-foot deep hole
• Minimum depth: Provides stability
• Check code: Local codes may require different depth

Step 2: Add 6 Inches Gravel

Gravel base is essential:

• Drainage: Allows water to drain
• Prevents rot: Keeps post base dry
• Stability: Provides stable base
• Required: Essential for post longevity

Step 3: Set Post

Position post correctly:

• Plumb: Post must be perfectly vertical
• Brace: Brace post to hold position
• Check level: Use level to verify
• Critical: Post must be straight before concrete sets

Step 4: Fill with Fast-Setting Concrete

Use fast-setting concrete:

• Sets quickly: Post can be used sooner
• Less waiting: Faster installation
• Convenient: Easier for DIY projects

Step 5: Slope Top to Shed Water

Slope concrete away from post:

• Prevents water: Keeps water away from post
• Prevents rot: Reduces rot risk
• Extends life: Post lasts longer
• Proper finish: Professional appearance

The Bottom Line

Set fence posts by digging 1/3 of post length deep, adding 6 inches gravel for drainage, setting post plumb, filling with fast-setting concrete, and sloping top to shed water. Each step is important—proper depth provides stability, gravel prevents rot, and sloping prevents water damage. Follow these steps for posts that will last.

Need help setting fence posts? Contact Local Concrete Contractor. We set fence posts correctly for durable, long-lasting fences.