Is white oak good for outdoor or wet applications?

Yes. White oak heartwood is very durable with good insect resistance, and its tyloses-plugged pores let it hold liquid, which is why it has long been used for wine and whiskey cooperage, boatbuilding, and ship hulls. Because iron and damp will blue-black the wood, use non-ferrous fasteners where moisture is in play.

How hard is white oak and how does it compare to red oak?

White oak has a Janka hardness of 1350 lbf (USDA Forest Products Laboratory value at 12% MC), making it harder than red oak at 1,220 lbf. It is also heavier, stronger, and far more decay resistant than red oak.

How does white oak work on the bench?

It machines well, steam-bends well, and glues, stains, and finishes well, with generally straight grain and a coarse, uneven texture. Note that oak dust is a respiratory sensitizer and hardwood dust is IARC Group 1 carcinogenic with long occupational exposure, so run dust collection.

DomesticQuercus alba

White Oak

Tyloses. That is the whole story.

White Oak (Quercus alba) is a domestic hardwood from the eastern and central United States with a Janka hardness of 1350 lbf. Its heartwood is light to medium brown with an olive or gray cast, and its latewood pores are plugged with tyloses, making it very durable and able to hold liquid.

Category: Domestic
Janka: 1,350 lbf
Botanical: Quercus alba
Shipped at: 6–8% MC

Quercus alba Eastern and central United States

Eastern and central United States.

Tyloses are the whole story. Heartwood light to medium brown with an olive or gray cast.

Detail of White Oak grain — figured wood texture, photographed at Raw Heartwood — A close read on the grain. Detail of this specimen

What you see.

Heartwood light to medium brown with an olive or gray cast. Narrow sapwood, nearly white to light tan, usually distinct. Cathedral grain on flatsawn faces — same pattern as red oak, more muted, less pink.

Heartwood color detail of White Oak (Quercus alba)

Heartwood, this specimen

How the grain runs.

Generally straight. Coarse, uneven texture. Ring-porous. Unlike red oak, the latewood pores are plugged with tyloses — that is what makes white oak hold liquid.

Closer in

On the bench.

Heartwood very durable. Good insect resistance. The tyloses and the tannins are why it has run wine barrels and ship hulls for centuries. Machines well. Steam-bends well. Glues, stains, finishes well. Iron and damp will blue-black it — use non-ferrous fasteners where moisture is in play. Distinct tannic smell at the cut. Oak dust is a respiratory sensitizer. Hardwood dust is IARC Group 1 — carcinogenic with long occupational exposure. Asthma, eye and skin irritation. Run dust collection.

The numbers, looked at directly.

Janka Hardness

0lbf

5,990 N. Side-hardness — force to embed a half-inch steel ball halfway into the wood.

Average Dried Weight

0lbs/ft³

755 kg/m³. At 12% MC.

Specific Gravity

0.60/ 0.68 at 12% MC

Basic over green volume; second number at 12% moisture content.

Hardness, in context

A side-hardness measurement. Higher number, harder wood.

Shrinkage — radial / tangential / volumetric

5.6%radial

10.5%tangential

16.3%volumetric

On sourcing

Where this wood comes from matters.

Not on CITES. IUCN Least Concern. Widely managed across its range. One of the most commercially important domestic hardwoods.

What it's for.

Wine & whiskey cooperage
Flooring
Furniture
Cabinetry
Architectural millwork
Boatbuilding
Timber framing

Worth knowing.

Tyloses are the whole story. They are why it holds water, why it ages spirits, why it framed wooden ships. Heavier than red oak, stronger than red oak, far more decay resistant.

Sources & references.

Wood Handbook — Wood as an Engineering Material (FPL-GTR-282) — USDA Forest Service, Forest Products Laboratory (2021)
White Oak (Quercus alba) — FPL Tech Sheet — USDA Forest Service, Forest Products Laboratory
Silvics of North America: Quercus alba L. — White Oak — Rogers, Robert (USDA Forest Service) (1990)
Quercus alba — IUCN Red List of Threatened Species — Wenzell, K.; Kenny, L. (2017)
Quercus alba — Wikipedia contributors
White Oak (Quercus alba) — The Wood Database
American White Oak — Species Guide — American Hardwood Export Council (AHEC)

Common questions.

Is white oak good for outdoor or wet applications?: Yes. White oak heartwood is very durable with good insect resistance, and its tyloses-plugged pores let it hold liquid, which is why it has long been used for wine and whiskey cooperage, boatbuilding, and ship hulls. Because iron and damp will blue-black the wood, use non-ferrous fasteners where moisture is in play.
How hard is white oak and how does it compare to red oak?: White oak has a Janka hardness of 1350 lbf (USDA Forest Products Laboratory value at 12% MC), making it harder than red oak at 1,220 lbf. It is also heavier, stronger, and far more decay resistant than red oak.
How does white oak work on the bench?: It machines well, steam-bends well, and glues, stains, and finishes well, with generally straight grain and a coarse, uneven texture. Note that oak dust is a respiratory sensitizer and hardwood dust is IARC Group 1 carcinogenic with long occupational exposure, so run dust collection.

From the library to your bench