- Species
- Quercus rubra (northern red oak) and related red oak species
- Janka
- About 1,290 lbf
- Density
- About 700 kg/m³
- Stability
- Medium
- Relative cost
- Medium
- Target moisture
- 6 to 9 percent for heated interiors
Materials / Temperate hardwood
Red Oak: Grades, Properties and Where It Fits
Hard, open grained and lower in price than white oak. A staple for cabinets, furniture parts, stair parts and trim in North America.
Red oak is the most widely sawn hardwood in the eastern United States, and that volume keeps its price below white oak. It has the same bold oak grain, similar hardness and good strength, so it covers cabinet doors, furniture frames, stair parts and mouldings where a buyer wants the oak look at a lower cost.
Lumber sold as red oak is a group of species. Northern red oak is the main one, and southern red oak, black oak and several others are sold with it. Lumber from northern and Appalachian forests grows slower and tends to be more even in color and texture than fast grown southern stock, so many buyers name the region of the lumber as well as the species.
The key difference from white oak is inside the pores. Red oak pores are open, with few or no tyloses, so liquid and air pass along the grain. That makes red oak a poor choice for outdoor parts, wet areas or anything that holds liquid, and it changes how the wood takes finish.
Properties
| Janka hardness | About 1,290 lbf (5,700 N) |
| Density at 12 percent moisture | About 700 kg/m³ |
| Shrinkage, green to oven dry | About 4.0 percent radial, 8.6 percent tangential |
| Grain and texture | Straight grain, coarse open texture. Plain sawn faces show strong cathedral figure. Quarter sawn faces show ray fleck that is smaller than in white oak. |
| Color | Light brown heartwood with a pink or reddish cast, narrow pale sapwood |
| Heartwood durability | Not durable. Indoor use only. |
| Steam bending | Good |
Typical published values for wood at about 12 percent moisture. Individual boards and panels vary.
Grades you will see on a quote
The grade decides how much clear wood you pay for. Name it on the RFQ and ask for photos of what the factory calls that grade.
- FAS and FAS 1 Face (NHLA)Long, wide, mostly clear boards for doors, tops, stair treads and long trim. The highest price.
- Select (NHLA)Clear on one face. Good value when only one face of the part shows.
- No. 1 Common (NHLA)Shorter clear cuttings. The usual grade for cabinet frames and furniture components cut to length.
- No. 2A Common (NHLA)More knots, worm holes and color. Used for rustic products, flooring and short hidden parts.
- Northern or Appalachian red oakA region of origin, not a grade. Usually more even in color and texture than southern stock, and often priced higher.
- Rift and quarter sawnA cut, not a grade. Straighter grain and less movement, at a premium. Rift sawn red oak is common on high end cabinet doors.
Where red oak works
Products and parts where it earns its price, and where another material is the better buy.
Cabinet doors and face frames
The traditional North American cabinet species. Takes stain well across large runs.
Furniture components
Legs, rails, aprons and frames where the oak grain is wanted at a lower price than white oak.
Stair parts and treads
Treads, risers, nosings and handrails. Hard enough for foot traffic.
Mouldings and trim
Casing, base and crown in stain grade. Widely stocked, so profiles are easy to match later.
Table tops for indoor use
Edge-glued tops for dining and office tables with a sealed finish.
Flooring and wall paneling
Strip and plank flooring and solid paneling, often in common grades.
Where it is a poor fit
- Outdoor furniture, boat parts or anything exposed to rain. The heartwood has low decay resistance and the open pores draw in water.
- Barrels, bowls, trays or vases that hold liquid. Liquid travels along the open pores and seeps out of end grain.
- Painted parts where a smooth flat surface is wanted. The deep pores show through paint unless they are grain filled.
- Products sold as a pale or neutral color. The pink cast is hard to hide under a light finish and clashes with white oak in the same set.
In the factory
How red oak behaves in machining, gluing, finishing and drying. These points explain most price and quality differences between quotes.
- MachiningMachines and shapes cleanly with sharp tooling. Its hardness wears cutters faster than softer species. Back up cuts to avoid tear-out on cross grain profiles.
- GluingGlues well with PVAc, polyurethane and urea adhesives. Machine and glue the same day for the best bond.
- FinishingTakes stain readily and evenly. The open pores soak up pigment, so dark stains can look heavier in the pores than on the flat grain. Fill the pores for a smooth high gloss surface.
- DryingDries slowly. Fast drying causes surface checks, end splits and honeycomb in thick stock, so ask for the drying schedule on thick parts.
Hardness compared
Red oak against the other solid woods buyers ask about. Hardness matters for tops, floors and parts that take knocks. For legs, frames and hidden parts, stability and price usually matter more.
- Hard maple1,450
- Beech1,450
- White oak1,360
- Ash1,320
- Red oak1,290
- Yellow birch1,260
- Acacia1,100
- Teak1,070
- Black walnut1,010
- Rubberwood980
- Cherry950
- Radiata pine710
- Poplar540
How to specify red oak
Example RFQ lines you can adapt.
- Red oak, northern or Appalachian origin, NHLA No. 1 Common or better, kiln dried to 6 to 9 percent.
- Rift sawn red oak for door stiles and rails, plain sawn allowed on center panels, no sapwood on show faces.
- Red oak stair treads, FAS one face, edge-glued from boards at least 75 mm wide, color matched across each tread.
What to check on samples
Approve one sample in writing and keep it as the reference for every shipment.
- Pink and brown tones across a stack of samples, against your color range
- Mixing of red and white oak in the same batch. A magnifier on clean cut end grain shows open or plugged pores.
- Stain color on the actual batch, approved in writing as the master sample
- Surface checks and end splits on thick parts
- Moisture readings on finished parts
Alternatives to red oak
When price, supply or the use case points elsewhere.
- White oakHigher price, browner color and plugged pores. Choose it for outdoor parts, liquids or a neutral tone.
- AshSimilar open grain, paler color and good strength. Supply depends on region.
- RubberwoodA lower cost base for stained parts when the oak grain pattern is not required.
Products often made in red oak: cabinet doors and fronts, panels and veneer, millwork and mouldings.
Product lines in red oak: Shaker cabinet doors, stair parts, wood slat wall panels.
Questions about red oak
Related guides:
- NHLA Hardwood Grades Explained: FAS, Select and Common for Buyers
- Solid Wood, Edge-Glued or Veneer: Choosing Construction for Wood Parts
- Custom Wood Table Tops: Specifications That Get an Accurate Quote
How do I tell red oak from white oak?
Look at the end grain with a magnifier. Red oak pores are open, while white oak pores are plugged with tyloses. Red oak also has a pink cast and shorter ray fleck. A factory that sorts both species should check every bundle.
Is red oak strong enough for chairs and tables?
Yes. Typical published values put its hardness at about 1,290 lbf and its strength close to white oak. It is a common species for indoor chair and table parts.
Why does red oak look pink after staining?
The pink tone is in the wood itself. Light and natural finishes show it most. Warm brown or darker stains hide it, and a color sample on the actual batch shows the result before production.
Can red oak be used outdoors?
Not recommended. The heartwood has low decay resistance and the open pores take in water. Choose white oak, teak or a treated species for outdoor parts.
Other temperate hardwoods
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