For full privacy, a 6-foot board-on-board or solid-panel fence in cedar, vinyl, or composite is the best choice. All three block sightlines completely and shrug off Portland's wet winters. Cedar wins on price ($25–45 per foot installed); vinyl and composite win on low maintenance — they never need staining or sealing. Below is how each material, height, and design stacks up, plus the add-ons that buy you a few extra feet of seclusion.
What actually makes a fence private
Privacy comes from three things, in order: height, no gaps, and the right board design. Material matters too, but a poorly designed cedar fence leaks more sightlines than a well-built vinyl one. Get the design right first.
Height — 6 feet is the privacy baseline
Six feet is the standard for a reason: it sits just above the eyeline of a standing adult on flat ground, so neighbors can't casually see over. Anything under 6 feet (a 4-ft picket, a 3.5-ft front-yard fence) gives you a boundary, not privacy. On a downhill lot or a raised deck, you may want height extensions or a lattice top to recover the sightline you lose to grade.
No gaps — the design decides everything
The picket pattern is what separates a true privacy fence from a "good-neighbor" or decorative one:
- Board-on-board — boards are mounted alternately front and back so they overlap. Zero gaps from any viewing angle, even as the wood shrinks over the years. This is the gold standard for full privacy.
- Solid panel (side-by-side) — boards butt tightly together. Fully private when new, but wood can shrink and open thin gaps; vinyl and composite panels don't shrink, so solid panels are great in those materials.
- Dog-ear — the classic stockade look (boards with clipped top corners) set side-by-side. Private when new; the cheapest panel to source, which is why it's the Portland default.
- Shadowbox / good-neighbor — alternating boards on each side with small staggered gaps. Looks finished from both sides and lets a breeze through, but the gaps allow filtered sightlines — so it's semi-private, not full privacy.
Best privacy fence materials compared
Cedar, vinyl, and composite are the three materials worth considering for a Portland privacy fence — all three resist rot in our wet climate, and all three can be built solid. Pressure-treated pine and chain-link can be made private too, but they trail on looks and longevity. Here's the head-to-head (cost ranges pull from our Portland fence cost guide):
| Material | Privacy | Maintenance | Cost / ft (installed) | Lifespan |
|---|---|---|---|---|
| Cedar (board-on-board) | Excellent — no gaps | Stain every 3–5 yrs (optional) | $25–45 | 15–25 years |
| Vinyl (solid panel) | Excellent — no gaps, no shrink | Hose off occasionally | $30–55 | 20–30+ years |
| Composite (solid panel) | Excellent — no gaps, no shrink | Hose off occasionally | $40–70 | 25–30+ years |
| Pressure-treated pine | Good — gaps open as it dries | Stain to look its best | $18–35 | 10–20 years |
| Chain-link + slats | Partial — slats only | Low | $15–25 | 15–25 years |
Cedar — best privacy fence on a budget
Cedar is the Portland default and the value pick. Built board-on-board at 6 feet, it gives total privacy and the warm, natural look most homeowners want — aging to a soft silver-grey if left unsealed. It's naturally rot-resistant, so it handles PNW rain well. The tradeoff: wood moves. Over years, solid-panel cedar can shrink and open hairline gaps, which is exactly why board-on-board is the design to choose — the overlap hides any shrinkage. Stain it every few years if you want to hold the color; skip it if you like the weathered grey.
Vinyl & composite — best privacy fence for low maintenance
If "set it and forget it" is the goal, vinyl or composite is the answer. Solid vinyl panels block sightlines completely, never shrink (so no gaps ever open), and need nothing but an occasional rinse — no staining, sealing, or repainting, ever. Composite gives the same low-upkeep privacy with a more wood-like texture and color that holds for decades, and it pairs naturally with a composite deck. Both cost more up front than cedar, but over a 25-year life the maintenance savings often close the gap.
Height & Portland rules — know before you build tall
Portland generally allows fences up to 6 feet in side and rear yards by right, and taller in some situations, while front-yard fences are capped around 3.5 feet — too short for real privacy. Corner lots and vision-clearance triangles have their own limits. Before you order a 6-ft (or 8-ft) privacy run, check the specifics in our Portland fence height & permit rules guide so your fence doesn't have to come back down.
Lattice and height extensions count toward the limit. A 6-ft solid fence with a 1-ft lattice topper reads as a 7-ft fence under Portland's zoning code, which can change whether a permit is needed. Confirm the total finished height — not just the solid portion — against the rules before building up.
The low-maintenance pick, in one line
If you never want to think about your fence again: solid vinyl or composite at 6 feet. If you want the best privacy for the lowest price and don't mind an occasional stain: board-on-board cedar at 6 feet. Both deliver full privacy; the choice is really price-now versus upkeep-later.
Design add-ons that buy more privacy
- Lattice top. A decorative lattice panel above the solid section adds 6–18 inches of height and softens the look while still screening the view — popular on cedar fences.
- Height extensions. Post extenders or an added rail-and-picket course recover privacy lost to a downhill grade or a neighbor's raised patio (watch the total-height limit).
- Board-on-board over solid. Choosing board-on-board instead of a side-by-side panel is the single best "add-on" for wood — it guarantees no gaps for the life of the fence.
- Privacy screening or plantings. Layering arborvitae or a climbing vine in front of the fence adds a green buffer and a few extra feet of visual screen without raising the structure.
- Solid gates. A privacy fence with a see-through gate isn't private. Match the gate's design and height to the run.
A privacy fence is only as private as its weakest run. The most common miss is a shadowbox or dog-ear section that opens up on a slope, or a gate that doesn't match the fence. If full privacy is the goal, spec board-on-board (or solid vinyl/composite) at a consistent 6 feet across every run, gates included — and account for grade.
Choosing between materials? Our cedar vs vinyl fence comparison goes deeper on the two most-asked-about privacy options, and the Portland fence cost guide breaks down the per-foot pricing for each.
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