100 ft of 6-ft privacy fence is 600 sq ft per side — 12 gallons to stain both sides with two coats of a typical semi-transparent stain (200 sq ft/gal).
| Product | Coats | Gallons | Buy | Cost |
|---|---|---|---|---|
| Thompson's WaterSeal Semi-Transparent Wood Sealer | 1 | 8 | 8 gal | $232 |
| Benjamin Moore Woodluxe Semi-Transparent (0692) | 1 | 4 | 4 gal | $240 |
| Sherwin-Williams SuperDeck Semi-Transparent | 1 | 6 | 1 × 5 gal + 1 gal | $305 |
| Cabot Semi-Transparent Stain & Sealer (oil) | 1 | 6 | 6 gal | $348 |
| Behr Premium Semi-Transparent (No. 5077) | 2 | 6.4 | 6 gal + 2 qt | $394 |
| Ready Seal Exterior Wood Stain & Sealer | 1 | 8 | 8 gal | $464 |
| Valspar One Coat Semi-Transparent | 1 | 8 | 8 gal | $464 |
| Olympic Elite Semi-Transparent | 2 | 9.6 | 10 gal | $580 |
| Defy Extreme Semi-Transparent | 2 | 12 | 2 × 5 gal + 2 gal | $660 |
| Typical semi-transparent stain | 2 | 12 | 12 gal | $696 |
Prices checked October 23, 2026 (maker and Walmart.com listings). Typical prices are labelled; tap any price to enter your store's.
| Plan | Sq ft | Stain | Buy | Cost |
|---|---|---|---|---|
| One side, weathered wood | 600 | 6 gal | 6 gal | $348 |
| Both sides, weathered wood | 1,200 | 12 gal | 12 gal | $696 |
| Both sides, rough-sawn boards | 1,200 | 14.4 gal | 14 gal + 2 qt | $858 |
| Both sides, shadowbox style | 1,440 | 14.4 gal | 14 gal + 2 qt | $858 |
| Both sides, Ready Seal (one application) | 1,200 | 8 gal | 8 gal | $464 |
A pump or airless sprayer is the fast way to stain a long fence; add about 25% for overspray and back-brush while it is wet. Stain the side facing the neighbor only with their agreement.
The full method, material data and tips are on the main deck stain calculator page.