How many vinyl fence panels for 100 ft?

Data checked October 2026

Short answer

A 100 ft run of 6-ft vinyl panels takes 13 panels and 14 posts, set with 42 bags of 50-lb Fast-Setting concrete.

13 panels (6-ft vinyl) on 8' 1" post centers: 12 full panels and a 3' last section cut from one more panel.
14 posts — 12 line posts plus 2 end posts (13 sections). With a 4-ft gate in the run it becomes 14 posts, 2 of them gate posts; bent into a U of 25, 50 and 25 ft it takes 16 posts.
Set each 5×5 post 36 in deep on 6 in of gravel (a 42-in hole, 10 in wide). Catalyst's 6×8 Newbury panels use 108-in posts, which leaves 36 in below a 6-ft fence.
Concrete: 42 × 50-lb Fast-Setting (3 per post, 0.53 yd³) — 2,100 lb to haul and about 42 gal of water.
Materials come to about $2,458 ($24.58/ft) at October 2026 prices, versus $2,500–$6,000 installed (Modernize, Aug 2026).
Any gate posts need an aluminum stiffener insert, which Catalyst sells separately from the posts and panels — budget for one per gate post.

Adjust it to your exact job

Fence type

Style

White vinyl panels slid into routed 5×5 posts; gate posts need an aluminum stiffener.

Height

Panel width

Post centers = panel width + post width. Check your panel's instructions and set the exact figure below.

Fence line100 ft total

Fence length

= 100' · 30.48 m

Gates

Walk gates

Double drive gates

You need

13vinyl panels

14 posts · 42 × 50-lb bags of concrete for 100' of fence

12 line2 end

Posts: 1412 line · 2 end
Sections: 13one panel each
Concrete: 42× 50 lb3 per line & end post
Post centers: 8' 1"full panels; cut the last one on each side

Posts to buy

Posts by type
Post	Buy	Hole	Fill
Line × 12	5×5, ≥ 9'	10 × 42 in	3 bags
End × 2	5×5, ≥ 9'	10 × 42 in	3 bags

Each post goes 36 in into the ground on 6 in of gravel. Concrete stops 3 in below grade so soil or sod can cover it.

Concrete: 42 × 50-lb Fast-Setting

14.3 ft³ · 0.53 yd³

Counted hole by hole: 3 per line & end post. Dry-poured bags can't be split between holes, so each post rounds up.
Water: about 42 gal (1 gal poured over each 50-lb bag). Weight to haul: 2,100 lb.
Filling the hole to the top with no gravel or soil cap would take 4 bags per line post — that is why bag counts online disagree.
Wait 4 hours before hanging rails, panels or gates on the posts.
With 80-lb Concrete Mix instead: 28 bags, about $181 versus $335 — cheaper per yard, but it must be mixed first and cures for 24 hours.

Different hole size or a single post? Use the post hole concrete calculator.

These holes take more than 30 in of concrete. Quikrete says to dry-pour Fast-Setting in lifts: fill to 30 in or less, soak with water, then add the rest.

Before you dig

Call 811 (free) a few days ahead to have buried utilities marked. Confirm the property line and set posts a few inches inside it, and check permit, zoning and HOA height rules — front-yard limits are often lower than backyard ones. In cold climates, ask your building department for the local frost depth and enter it above — posts that stop short of it can heave.

Vinyl gate posts

Gate posts need an aluminum stiffener insert, sold separately (Catalyst). In high-wind code areas such as Florida, solid vinyl may need extra wind-rated parts — check your local product approval.

Shopping list

12 posts 5×5 vinyl line posts$425
2 posts 5×5 vinyl end posts$89.46
13 panels White vinyl privacy panels, 6 × 8 ftCut the last panel in each run to fit$1,553
42 bags Quikrete Fast-Setting Concrete Mix (No. 1004), 50 lb bags3 per line & end post$335
8 bags All-purpose gravel, 0.5 cu ft bags6 in drainage base under each post$55.60
14 caps 5×5 vinyl post caps (if not included)often forgotten — keeps water out of end grain

Estimated total$2,458

Cost estimate

Tap a price to use your store's

5×5 vinyl line posts
12 posts × $
$425
5×5 vinyl end posts
2 posts × $
$89.46
White vinyl privacy panels, 6 × 8 ft
13 panels × $
$1,553
Quikrete Fast-Setting Concrete Mix (No. 1004), 50 lb bags
42 bags × $
$335
All-purpose gravel, 0.5 cu ft bags
8 bags × $
$55.60

Materials total$2,458

Typical U.S. big-box prices, checked October 2026; posts and pickets are 2026 snapshots. Not in the total: 5×5 vinyl post caps (if not included).

Hiring it out instead?

Installed vinyl privacy fences run about $25–$60 per foot (Modernize, Aug 2026) — roughly $2,500–$6,000 for 100', against about $2,458 in materials above. Compare materials, gates and removal →

Did this answer your question?

Compare

100 ft of fence in every style

Style	Boards / panels	Posts	Concrete bags	Materials
Wood privacy, 6 ft	241 pickets	14	56	$1,585
Board-on-board, 6 ft	330 pickets	14	56	$1,788
Spaced picket, 4 ft	220 pickets	14	42	$1,049
Prebuilt wood panels, 6 ft	13 panels	14	56	$1,764
Vinyl privacy panels, 6 ft	13 panels	14	42	$2,458

How this was worked out

Panels: 100 ft ÷ 8' 1" post centers = 12.37, rounded up to 13 panels. Posts = panels + 1 = 14 on a straight run.

Concrete per post: a 10-in hole around a 5×5 vinyl post leaves 53.5 sq in; 33 in of concrete = 1.02 cu ft → 3 × 50-lb bags.

Prices used: 5×5 vinyl line posts $35.40; 5×5 vinyl end posts $44.73; White vinyl privacy panels, 6 × 8 ft $119.47; Quikrete Fast-Setting Concrete Mix (No. 1004), 50 lb bags $7.97; All-purpose gravel, 0.5 cu ft bags $6.95. Tap any price in the calculator to use your store's.

The full method, material data and tips are on the main fence calculator page.

Similar jobs

Other sizes people check

Sources

Data behind this answer

The Home Depot — Do It Yourself Fence Installation sheet — posts ≤ 8 ft on center, 10 in holes, 4 in gravel, rails ≤ 24 in apart, 6 fasteners per picket, pickets 2 in off the ground · checked October 2026
Quikrete Fast-Setting Concrete Mix No. 1004 — data sheet (rev. Nov 2025) — 50 lb = 0.375 cu ft; hole 3× post width; fill to 3–4 in below grade; ~1 gal water per bag; lifts ≤ 30 in; 4 h before load · checked October 2026
Quikrete Concrete Mix No. 1101 — data sheet (rev. Oct 2022) — 80 lb = 0.60 cu ft; 6–9 pt water per bag; 24 h before strain · checked October 2026
Quikrete — Setting Posts in Concrete (how-to) — bury 1/3 of the post (= half the above-ground height) plus 6 in of gravel · checked October 2026
Western Red Cedar Lumber Association — fence specifications — 4×4 dresses to 3-9/16 in, 6×6 to 5-1/2 in · checked October 2026
Master Halco — Western Red Cedar fence boards — actual picket widths 3-1/2, 5-1/2 and 7-1/2 in · checked October 2026
Catalyst Fence — Privacy Vinyl Fence Kit instructions (rev. 1.25) — post centers = panel + post width; 10 in holes for 5×5; 6 in gravel; 2 in ground clearance · checked October 2026
Catalyst Fence — Newbury vinyl SKU pages (rev. 6/2026) — 6 and 8 ft panels on 5×5 posts; 97 in post centers (Premium LX); 108 in posts for 6×8 · checked October 2026
Catalyst Fence — Vinyl privacy & picket gate instructions — vinyl gate posts need a stiffener insert, sold separately · checked October 2026
CPSC — Safety Barrier Guidelines for Residential Pools (Pub. 362) — 48 in minimum height, 1-3/4 in / 4 in openings, 1-1/4 in chain-link mesh, 2 in bottom gap over grass · checked October 2026
Home Depot & Lowe's listings — PT posts, pickets and 6×8 panels (2026 snapshots) — 4×4×8 $11.18, 4×4×10 $19.68, 6×6×8 $37.68, pickets $2.28 PT / $3.96 cedar, PT panel $76.98 · checked October 2026
Home Depot — Veranda vinyl fence panels and posts (2026 snapshots) — 6×8 white privacy panel $119.47 typical; 5×5 posts $35.40–$62.99 · checked October 2026
Home Depot price history — Quikrete 50 lb Fast-Setting (Glassit tracker) — $7.97 per bag (Aug 2026); 80 lb Concrete Mix $6.47 (Sept 2026) · checked October 2026
Sakrete All-Purpose Gravel / Mulch Pros price list — 0.5 cu ft per bag; $6.95 per 0.5 cu ft bag (Oct 2026) · checked October 2026
Thompson's WaterSeal — Semi-Transparent Wood Sealer — 150–400 sq ft/gal; wait 30 days on new pressure-treated wood · checked October 2026
Ready Seal — FAQ — new pressure-treated wood: 1 month minimum, 2–3 months recommended before staining · checked October 2026
Minnesota Rules 1303.1600 — footing depth for frost protection — 60 in in Zone I (north), 42 in in Zone II (south) · checked October 2026
Modernize — Fence installation cost (updated Aug 12 2026) — installed $/ft by material, labor $5–15/ft, 150-ft totals · checked October 2026
Fixr — Wood, picket, chain-link and vinyl fence cost guides (Jan 2025) — $/ft by style and species, gates, removal $2–5/ft · checked October 2026

Short answer

A 100 ft run of 6-ft vinyl panels takes 13 panels and 14 posts, set with 42 bags of 50-lb Fast-Setting concrete.

13 panels (6-ft vinyl) on 8' 1" post centers: 12 full panels and a 3' last section cut from one more panel.

14 posts — 12 line posts plus 2 end posts (13 sections). With a 4-ft gate in the run it becomes 14 posts, 2 of them gate posts; bent into a U of 25, 50 and 25 ft it takes 16 posts.

Set each 5×5 post 36 in deep on 6 in of gravel (a 42-in hole, 10 in wide). Catalyst's 6×8 Newbury panels use 108-in posts, which leaves 36 in below a 6-ft fence.

Concrete: 42 × 50-lb Fast-Setting (3 per post, 0.53 yd³) — 2,100 lb to haul and about 42 gal of water.

Materials come to about $2,458 ($24.58/ft) at October 2026 prices, versus $2,500–$6,000 installed (Modernize, Aug 2026).

Any gate posts need an aluminum stiffener insert, which Catalyst sells separately from the posts and panels — budget for one per gate post.

Adjust it to your exact job

Fence type

Style

White vinyl panels slid into routed 5×5 posts; gate posts need an aluminum stiffener.

Height

Panel width

Post centers = panel width + post width. Check your panel's instructions and set the exact figure below.

Fence line100 ft total

Fence length

= 100' · 30.48 m

Gates

Walk gates

Double drive gates

You need

13vinyl panels

14 posts · 42 × 50-lb bags of concrete for 100' of fence

12 line2 end

Posts: 1412 line · 2 end
Sections: 13one panel each
Concrete: 42× 50 lb3 per line & end post
Post centers: 8' 1"full panels; cut the last one on each side

Posts to buy

Posts by type
Post	Buy	Hole	Fill
Line × 12	5×5, ≥ 9'	10 × 42 in	3 bags
End × 2	5×5, ≥ 9'	10 × 42 in	3 bags

Each post goes 36 in into the ground on 6 in of gravel. Concrete stops 3 in below grade so soil or sod can cover it.

Concrete: 42 × 50-lb Fast-Setting

14.3 ft³ · 0.53 yd³

Counted hole by hole: 3 per line & end post. Dry-poured bags can't be split between holes, so each post rounds up.
Water: about 42 gal (1 gal poured over each 50-lb bag). Weight to haul: 2,100 lb.
Filling the hole to the top with no gravel or soil cap would take 4 bags per line post — that is why bag counts online disagree.
Wait 4 hours before hanging rails, panels or gates on the posts.
With 80-lb Concrete Mix instead: 28 bags, about $181 versus $335 — cheaper per yard, but it must be mixed first and cures for 24 hours.

Different hole size or a single post? Use the post hole concrete calculator.

These holes take more than 30 in of concrete. Quikrete says to dry-pour Fast-Setting in lifts: fill to 30 in or less, soak with water, then add the rest.

Before you dig

Vinyl gate posts

Gate posts need an aluminum stiffener insert, sold separately (Catalyst). In high-wind code areas such as Florida, solid vinyl may need extra wind-rated parts — check your local product approval.

Shopping list

12 posts 5×5 vinyl line posts$425
2 posts 5×5 vinyl end posts$89.46
13 panels White vinyl privacy panels, 6 × 8 ftCut the last panel in each run to fit$1,553
42 bags Quikrete Fast-Setting Concrete Mix (No. 1004), 50 lb bags3 per line & end post$335
8 bags All-purpose gravel, 0.5 cu ft bags6 in drainage base under each post$55.60
14 caps 5×5 vinyl post caps (if not included)often forgotten — keeps water out of end grain

Estimated total$2,458

Cost estimate

Tap a price to use your store's

5×5 vinyl line posts
12 posts × $
$425
5×5 vinyl end posts
2 posts × $
$89.46
White vinyl privacy panels, 6 × 8 ft
13 panels × $
$1,553
Quikrete Fast-Setting Concrete Mix (No. 1004), 50 lb bags
42 bags × $
$335
All-purpose gravel, 0.5 cu ft bags
8 bags × $
$55.60

Materials total$2,458

Typical U.S. big-box prices, checked October 2026; posts and pickets are 2026 snapshots. Not in the total: 5×5 vinyl post caps (if not included).

Hiring it out instead?

Style

Boards / panels

Posts

Concrete bags

Materials

Wood privacy, 6 ft

241 pickets

$1,585

Board-on-board, 6 ft

330 pickets

$1,788

Spaced picket, 4 ft

220 pickets

$1,049

Prebuilt wood panels, 6 ft

13 panels

$1,764

Vinyl privacy panels, 6 ft

13 panels

$2,458

How this was worked out

Panels: 100 ft ÷ 8' 1" post centers = 12.37, rounded up to 13 panels. Posts = panels + 1 = 14 on a straight run.

Concrete per post: a 10-in hole around a 5×5 vinyl post leaves 53.5 sq in; 33 in of concrete = 1.02 cu ft → 3 × 50-lb bags.

The full method, material data and tips are on the main fence calculator page.