Introduction
Style decides how your fence looks; material decides how long it lasts and what it costs you over its life. A cedar board-on-board fence and a vinyl privacy fence can look similar from the street on day one — but they diverge fast on maintenance, lifespan, and total cost.
The Privacy Fence Calculator estimates quantities for any style you choose. This guide helps you choose well: the four privacy styles, the three main materials, how each combination affects your board count and budget, and the maintenance each one demands. For installed pricing, see the cost guide.
The Four Privacy Styles
| Style | Boards/ft | Look | Best for |
|---|---|---|---|
| Solid board | ~2 | Flat, unbroken face | Maximum privacy at lowest lumber cost |
| Board-on-board | ~2.5 | Overlapping, textured face | Climates with humidity swings; hides shrinkage gaps |
| Shadowbox | ~3.5–4 | Finished both sides, slight see-through at angles | Shared fences; HOAs requiring finished both sides |
| Tongue-and-groove | ~2 | Refined, interlocked face | Premium look; high-end neighborhoods |
Solid board
The classic privacy fence: vertical boards butted edge to edge on 2–3 rails. Cheapest in lumber (~2 boards/ft), but wood shrinks as it dries — small gaps can open between boards over the first year. Best with kiln-dried lumber or in stable climates.
Board-on-board
Each board overlaps the previous one by about an inch, so shrinkage never opens a sightline. Uses ~25% more lumber (~2.5 boards/ft) but stays private for life. The most popular wood privacy style in the US for good reason.
Shadowbox
Boards alternate front and back of the rails. From straight on it’s fully private; at sharp angles you can glimpse through. Both sides look finished — ideal when neighbors share the fence or the HOA requires it. The lumber appetite (~3.5–4 boards/ft) makes it the priciest wood style.
Tongue-and-groove
Boards interlock for a furniture-grade face with no gaps, ever. Beautiful and the most labor-intensive to install — boards must be fitted, not just nailed. Premium material and labor costs.
Wood: Cedar vs. Pressure-Treated Pine
| Property | Western red cedar | Pressure-treated pine |
|---|---|---|
| Typical installed cost | $30–$50/ft ($98–$164/m) | $25–$40/ft ($82–$131/m) |
| Rot/insect resistance | Natural oils; excellent | Chemical treatment; very good |
| Expected lifespan | 15–20 years | 10–15 years |
| Maintenance | Stain every 2–3 years (or let gray) | Seal regularly; critical for longevity |
| Appearance | Rich color, weathers gracefully | Greenish tint fading to gray; takes stain well |
| Stability | Less warping and shrinking | More movement; buy kiln-dried after treatment (KDAT) if available |
Cedar is the premium wood choice: naturally durable, dimensionally stable, and attractive even unstained (it silvers to gray). Pressure-treated pine wins on price and is widely available, but it moves more with moisture changes and its treatment doesn’t last forever — sealing is what gets it to 15 years. For posts, many builders use pressure-treated lumber even on cedar fences, since posts live in the highest-moisture zone.
Vinyl Privacy Fencing
Vinyl privacy fences use interlocking panels — typically 6 ft (1.83 m) tall in 6 or 8-ft (1.8 or 2.4-m) widths — hung between vinyl-clad or aluminum-reinforced posts. What you gain: zero staining, no rot, no insect damage, and color that doesn’t fade dramatically for decades. What you give up: higher up-front cost ($45–$75/ft / $148–$246/m installed), a less “natural” look some HOAs actually prefer, and brittleness in extreme cold — cheap thin panels can crack on impact below freezing.
Panel-based construction changes the estimating math: you count panels and posts rather than individual boards, and partial panels at the end of a run need cutting or a custom-width section. The estimating guide notes the adjustments for panel fences.
Composite Fencing
Composite boards (wood fiber + recycled plastic) mimic wood grain with minimal upkeep — no staining, no rot, 20–30+ year lifespans. At $50–$80/ft ($164–$262/m) installed, it’s the premium option, justified where you want wood’s look with vinyl’s maintenance profile. Boards are heavier than wood, so post spacing and rail support matter more; follow the manufacturer’s structural specs rather than wood-fence rules of thumb.
Posts, Rails, and Hardware
- Posts: 4×4 pressure-treated wood is standard; 6×6 or steel for gates and corners. On a 6-ft fence, posts are 9 ft (2.74 m) long with 3 ft (0.91 m) buried. Metal posts outlast wood in wet soil.
- Rails: 2×4 pressure-treated lumber, 3 per section on 6-ft fences. Some builders use 2×3 to save weight; 2×4 is sturdier.
- Fasteners: hot-dip galvanized or stainless screws/nails, rated for exterior use and (for treated lumber) ACQ-compatible. This is not the place to economize — fastener failure means board failure.
- Post caps: inexpensive caps shed water off post tops, the most rot-prone 6 inches of the whole fence. A few dollars per post buys years.
Maintenance by Material
| Material | Routine care | Interval |
|---|---|---|
| Cedar | Clean + stain/seal | Every 2–3 years |
| Pressure-treated pine | Clean + water-repellent sealer | Every 1–2 years |
| Vinyl | Wash with soap and water | Annually or as needed |
| Composite | Wash with soap and water | Annually or as needed |
All wood fences share three enemies: soil contact (keep boards 2–3 in / 5–8 cm off grade), standing water at post bases (crown the concrete), and vegetation holding moisture against boards. Installation details that defeat these are in the pro tips guide.
Choosing for Your Situation
- Tight budget, handy homeowner: pressure-treated pine, solid board or board-on-board, DIY. Lowest cost per year if you maintain it.
- Best value with low effort: cedar board-on-board, professionally installed. The sweet spot for most suburban backyards.
- Never want to stain again: vinyl. Pays back its premium over 10–15 years of skipped maintenance.
- Shared fence with neighbors: shadowbox in cedar or vinyl — both sides look finished, which ends the “which side faces out” debate.
- High wind exposure: board-on-board or solid with 6-ft post spacing and deep concrete footings; avoid shadowbox’s partial airflow becoming a liability debate — check local wind requirements.
Once you’ve chosen, the complete guide runs the full quantity math for a 200-ft example you can adapt.
Related Guides
- Privacy Fence Complete Guide — styles, materials, formulas, and a 200-ft worked example.
- Privacy Fence Cost Guide — per-foot pricing and project budgets.
- Privacy Fence Calculator FAQ — quick answers to the most asked questions.
- Pro Tips — installation advice that protects your investment.
- DIY vs Pro — when to build it yourself and when to hire out.
- Formula Explained — the board, post, rail, and concrete math.
Frequently Asked Questions
Which privacy fence style uses the least lumber?
Solid board and tongue-and-groove at ~2 boards per linear foot. Board-on-board uses ~25% more (~2.5/ft); shadowbox uses the most at ~3.5–4/ft.
Is cedar worth the extra cost over pressure-treated pine?
For most homeowners, yes: better stability, natural rot resistance, 15–20 year lifespan, and it looks good even unstained. PT pine wins only on up-front price.
Does vinyl fencing fade?
Quality vinyl with UV inhibitors fades minimally over decades; cheap thin panels fade and become brittle faster. Buy from established manufacturers with long warranties.
Can I mix materials — wood boards with metal posts?
Yes, and it’s a smart upgrade: galvanized steel posts outlast wood in wet soil, especially at gates and corners. Use post adapters or brackets designed for the combination.
What fasteners should I use on a cedar fence?
Stainless steel or hot-dip galvanized screws. Avoid standard bright nails — they’ll rust and streak the cedar within a season or two.
Get Your Number
Style sets your boards-per-foot factor; material sets your cost per foot and your maintenance calendar. Pick the combination that fits your budget, your climate, and how much upkeep you’ll actually do — then run your length through the Privacy Fence Calculator for the exact material list. A fence you maintain is a fence that lasts; choose the material you’ll genuinely take care of.
Disclaimer: Calculator results are planning estimates based on the dimensions you enter; verify locally, as material lifespans and costs vary with climate, product quality, and maintenance. Consult a licensed professional or your local building authority for structural, permitting, or code-related decisions.
