Thompson's WaterSeal Penetrating Timber Oil Review (2026)
By Nate Sawyer, Editor · Updated July 2026
DIYPicks is reader-supported. As an Amazon Associate and affiliate of home-improvement retailers, we may earn a commission when you buy through links on our site — at no extra cost to you. This never affects our recommendations.
- Budget minded fence refresh
- New cedar and redwood fences
- Penetrating water repellency with light tint
- Widely stocked at big box stores
A budget penetrating oil for fences that soaks into bare cedar and redwood, repels water, and adds light grain-enhancing tint, and it is stocked at nearly every big-box store for easy touch-ups. The catch is durability: its thin, near-transparent film carries little pigment, so graying protection is modest and most fences need a fresh coat every 1-2 years. Oil cleanup and a dry 48-hour window are the usual oil-stain trade-offs.
Pros
- Deep-penetrating triple-oil blend nourishes bare cedar and redwood and repels water well for the price
- Cheap and stocked at nearly every big-box store, so touch-ups are easy to buy
- Light tint enhances grain and adds some mildew and UV resistance without hiding the wood
Cons
- Thin, near-transparent film wears fast and typically needs reapplying every 1-2 years
- Limited pigment means weaker graying protection than semi-transparent or solid fence stains
- Oil base requires mineral-spirit cleanup and a dry 48-hour weather window after coating
Specifications
| opacity | Transparent to semi-transparent |
|---|---|
| base | Oil-based penetrating (triple oil blend) |
| coats | 1 coat |
| coverage | Up to 250 sq ft per gallon on smooth wood; less on rough fence boards |
| dryTime | About 2 hours to touch; keep off rain for 48 hours |
| cleanup | Mineral spirits |
| reapply | Roughly every 1-2 years |
| note | Resists mildew and UV; sold at Home Depot, Lowe's, Walmart and Ace |
Frequently Asked Questions
- Is Thompson's Timber Oil discontinued?
- We cannot verify a discontinuation, and we would rather say so than guess. As of our review it was widely stocked at Home Depot, Lowe's, Walmart and Ace, which is one of its main selling points. Retail line-ups change, so check current stock at your local store or the manufacturer's site before planning a whole fence around it.
- How often does Thompson's Timber Oil need to be reapplied?
- Roughly every 1-2 years. The film is thin and near-transparent, so it wears faster than a pigmented semi-transparent or solid fence stain. That maintenance cycle is the honest cost of the low purchase price.
- Will it keep a cedar fence from graying?
- Only modestly. It carries limited pigment, so graying protection is weaker than a semi-transparent or solid stain, though it does resist mildew and offers some UV resistance. What it does well is penetrate bare cedar and redwood and repel water.
- What weather window do you need after applying it?
- It dries to the touch in about 2 hours, but you need to keep rain off it for 48 hours. Coverage is up to 250 sq ft per gallon on smooth wood and less on rough fence boards, and cleanup is mineral spirits rather than soap and water.