Table of Contents
Privacy Fence Basics
A privacy fence completely blocks the view from the outside, providing security and seclusion for your yard. The most common design uses vertical pickets (boards) attached to horizontal rails supported by posts. Standard privacy fences are 6 feet tall and use 1x6 dog-ear pickets.
Proper material estimation prevents costly extra trips to the lumber yard and ensures you have enough supplies to complete the project without delays. Always add 10-15% extra for waste, cutting errors, and warped boards.
Material Calculation Formulas
Material Guide
| Component | Standard Size | Material |
|---|---|---|
| Posts | 4x4 x 8 ft (for 6 ft fence) | Pressure-treated pine |
| Rails | 2x4 x 8 ft | Pressure-treated pine |
| Pickets (6 ft fence) | 1x6 x 6 ft dog-ear | Cedar or PT pine |
| Pickets (4 ft fence) | 1x6 x 4 ft dog-ear | Cedar or PT pine |
| Nails/Screws | 2" exterior galvanized | 6-8 per picket |
| Concrete | 1-2 bags (80 lb) per post | Fast-setting mix |
Cost Breakdown
| Material | Price Range |
|---|---|
| PT Pine 1x6x6 Picket | $2.50 - $4.00 each |
| Cedar 1x6x6 Picket | $4.00 - $7.00 each |
| 4x4x8 PT Post | $8.00 - $15.00 each |
| 2x4x8 PT Rail | $4.00 - $7.00 each |
| Concrete (80 lb bag) | $4.50 - $6.00 each |
| Screws (5 lb box) | $15.00 - $25.00 |
Frequently Asked Questions
How many fence pickets do I need for 100 feet of fence?
For a standard privacy fence using 5.5-inch-wide (1x6) pickets with no gaps, you need approximately 218 pickets per 100 linear feet. This assumes 8-foot post spacing with 12.5 sections. Add 10% for waste, bringing the total to about 240 pickets.
How far apart should fence posts be?
Standard post spacing for a privacy fence is 8 feet on center. This matches the standard 8-foot rail length, minimizing cuts and waste. For high-wind areas or 8-foot-tall fences, reduce spacing to 6 feet for added strength.
How deep should fence post holes be?
Bury one-third of the post below ground. For a 6-foot fence, use 8-foot posts and dig 24-30 inch holes. In cold climates, extend the depth below the frost line (typically 36-48 inches) to prevent frost heave.
Should I use cedar or pressure-treated pine?
Cedar is naturally rot-resistant and more attractive but costs 50-100% more. Pressure-treated pine is more affordable and equally durable but may warp more over time. Both last 15-25 years with proper maintenance. Cedar weathers to a natural gray if left unstained.