Fence Post Spacing & Material Estimator
Estimate post spacing, material quantities (posts, panels, boards, rails, concrete), and costs for common fence types based on height and wind exposure.
Fence Type & Dimensions
Common heights: 4 ft (picket), 6 ft (privacy), 8 ft (security)
Wind Exposure
Corners & Gates
1 extra post per corner
2 posts per gate
Construction Mode
Cost Estimate
Ready to Calculate Materials
Enter your fence specifications and click "Calculate Materials" to get post spacing recommendations and material estimates.
Understanding Fence Post Spacing & Materials
Proper fence post spacing is crucial for fence stability, longevity, and appearance. The ideal spacing depends on fence type, height, material, and environmental factors like wind exposure. This guide covers the basics of fence post spacing and material estimation.
Spacing by Fence Type
- Wood Privacy (6-8 ft): Standard spacing for solid privacy panels
- Wood Picket (6-8 ft): Similar to privacy, allows some airflow
- Chain Link (10 ft): Industry standard with tension bands
- Field/Wire (12-16 ft): Wider spacing for agricultural use
- Ranch Rail (8-10 ft): Decorative spacing for split rail
Wind Exposure Impact
- Sheltered: Can use maximum recommended spacing
- Moderate: Use standard recommended spacing
- High Exposure: Reduce spacing by 10-15% for stability
- Taller fences: Create more wind load, need closer spacing
Post Setting Basics
Posts should be set in concrete for maximum stability. The general rule is to bury about 1/3 of the total post length, plus 6 inches for frost protection. For a 6 ft fence, you typically need an 8 ft post with 2-2.5 ft in the ground.
Post Hole Diameter
Dig holes 3× the post diameter. For a 4×4 post (3.5" actual), dig a 10-12 inch diameter hole.
Concrete Amount
One 50-lb bag of concrete fills about 0.375 cubic feet. Most post holes need 1-2 bags depending on depth and diameter.
Setting Method
Set posts slightly high and crown the concrete to shed water. Allow 24-48 hours cure time before attaching fence sections.
Material Planning Tips
- • Buy extra: Add 5-10% extra for waste, mistakes, and future repairs
- • Corner posts: Use larger or heavier-duty posts at corners and ends
- • Gate posts: Double posts or use larger posts for gate support
- • Rails: Typically 2-3 rails for 4-6 ft fences, 4 rails for 8 ft
- • Hardware: Don't forget brackets, screws, hinges, and latches
Before You Build
- • Check local building codes and permit requirements
- • Verify property lines - consider a survey if uncertain
- • Call 811 to locate underground utilities before digging
- • Check HOA rules for fence type, height, and placement
- • Discuss plans with neighbors if fence is on or near property line
Frequently Asked Questions
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