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Species guide

White Oak: what the numbers tell you.

What one lab study can tell you about White Oak—and what it cannot.

Direct answer

In one lab test, White Oak averaged 6.3 kN. Its test range overlapped Red Oak’s. The name alone cannot tell us which board is harder. It cannot promise water or wear.

PHR-supplied close view of hardwood floor boards and grain.
PHR-supplied floor photo — grain and color vary by species, board, light, and finish.

See the wood, then read the numbers

A photo can show character. It cannot prove the species.

Use the measured record below to compare the named wood. Then compare real samples in the room where the floor will live.

How to read these figures

White Oak had a higher average Janka result in this one study. But the test ranges overlapped. The study tested clear wood, not finished floors in homes.

Sources & methodology Peer-reviewed measurements and study context

These figures come from clear-wood laboratory data in the cited peer-reviewed study. They help you compare species; your own floor’s construction, finish history, and condition still matter.

Reported values and study context
MetricReported valueContext
Density756 kg/m³ meanStudy range: 599–887 kg/m³ across sampled boards.
Specific gravity at 12% moisture content0.71 meanStudy range: 0.55–0.83.
Averaged Janka hardness6.3 kN meanStudy range: 2.9–10.4 kN across radial/tangential test results.
Static bending MOE11,300 MPa meanA clear-wood stiffness measurement, not an installed-floor performance guarantee.
Static bending MOR113 MPa meanA clear-wood bending-strength measurement, not a service-life prediction.
  1. Carmona et al. (2020) — BioResources: clear-wood Red Oak and White Oak properties

Reviewed October 6, 2026. The paper measures clear wood in a lab. At your visit, we look at the real floor, room, and project plan.