Why species selection is a technical decision here
In most of the United States, choosing a cabinet wood is a decision about colour, grain and budget. On the Gulf Coast there is a fourth axis, and the federal data to measure it. The USDA Forest Products Laboratory recommends an in-service moisture content of 11 percent for interior woodwork in the damp, warm coastal area against 8 percent across most of the country, and cabinet stock is kiln dried to 6 to 8 percent. Every cabinet installed here gains moisture, and different species respond to that by different amounts.
The amount is published. Table 13-5 of the Wood Handbook, publication FPL-GTR-282, gives a dimensional change coefficient for every commercial species, in both the radial and tangential directions, valid for moisture content between 6 and 14 percent. The primary source is the chapter on drying and control of moisture content and dimensional changes.
The formula, and a worked example
Equation 13-3 of the same chapter gives the calculation. Change in dimension equals the starting dimension, multiplied by the dimensional change coefficient for the species and direction, multiplied by the change in moisture content.
That is the whole argument. Nobody is claiming maple is a bad cabinet wood, because it is not: it is hard, pale, takes a finish beautifully and is one of the most used cabinet species in the country. What the number says is that if you put a wide flat-sawn maple panel into an inset door on this coast, you have made a choice, and the reveal will tell you about it every January.
The full coefficient table
Lower numbers mean less movement. Radial applies to quartersawn material, tangential to flat-sawn, and flat-sawn is what most cabinet stock is. All figures are per one percent change in moisture content, based on the dimension at 10 percent moisture content.
| Species | Radial, quartersawn | Tangential, flat-sawn | Movement on 24 in, 4% MC change, flat-sawn |
|---|---|---|---|
| Southern magnolia | 0.00187 | 0.00230 | 0.22 in |
| Black cherry | 0.00126 | 0.00248 | 0.24 in |
| Black walnut | 0.00190 | 0.00274 | 0.26 in |
| Red alder | 0.00151 | 0.00256 | 0.25 in |
| Yellow poplar, paint grade | 0.00158 | 0.00289 | 0.28 in |
| Red maple | 0.00137 | 0.00289 | 0.28 in |
| Northern red oak | 0.00137 | 0.00304 | 0.29 in |
| Yellow birch | 0.00256 | 0.00338 | 0.32 in |
| Sugar maple | 0.00165 | 0.00353 | 0.34 in |
| Sweetgum | 0.00183 | 0.00365 | 0.35 in |
| White oak | 0.00194 | 0.00376 | 0.36 in |
| True hickory | 0.00259 | 0.00411 | 0.39 in |
| American beech | 0.00190 | 0.00431 | 0.41 in |
Coefficients from USDA Forest Products Laboratory, Wood Handbook FPL-GTR-282, Table 13-5. The movement column is our arithmetic using the Handbook's Equation 13-3 for a 24 inch wide panel moving four percentage points of moisture content.
| Species | Radial | Tangential | Movement on 24 in, 4% MC change, flat-sawn |
|---|---|---|---|
| Eastern red cedar | 0.00106 | 0.00162 | 0.16 in |
| Atlantic white cedar | 0.00099 | 0.00187 | 0.18 in |
| Longleaf pine | 0.00137 | 0.00248 | 0.24 in |
| Loblolly pine | 0.00165 | 0.00259 | 0.25 in |
| Slash pine | 0.00187 | 0.00267 | 0.26 in |
| Coast Douglas-fir | 0.00165 | 0.00267 | 0.26 in |
Same source and same arithmetic. The three southern yellow pines are grouped here because they are the pines actually grown and milled in this region.
Quartersawn, and why it costs more
Look at the two columns in the tables above. White oak is 0.00194 radial and 0.00376 tangential, so quartersawn white oak moves about half as far across its width as flat-sawn white oak does. Black cherry is 0.00126 against 0.00248, again about half. Red maple is 0.00137 against 0.00289, more than half again.
Quartersawn material is cut so that the growth rings run roughly perpendicular to the face, which means the movement across the face is radial rather than tangential. The reason it costs more is yield: a log cut for quartersawn boards produces fewer usable wide boards than one cut plain. The reason it is worth it on this coast is the halving of movement across a wide panel, particularly on an inset door where the reveal has nowhere to go.
There is an aesthetic bonus on white oak specifically. Quartersawing exposes the medullary rays as flecking across the face, which is the figure people associate with arts and crafts furniture. So the species with the highest flat-sawn movement in the common cabinet list is also the one where quartersawing is most visually rewarded.
Which species for which job
Painted cabinets
Yellow poplar frames with MDF panels is the standard paint-grade combination. Poplar sits at 0.00289 tangential, takes paint evenly, has no strong grain to telegraph through a finish and costs less than the show-grade hardwoods. MDF panels barely move at all, which is exactly what prevents the hairline at the panel shoulder that a solid wood panel produces in a dry January. Maple is also used for painted frames and is marginally more stable radially.
Avoid oak for painted work unless you are prepared for two extra steps: oak is tannin-rich, so it wants a stain-blocking primer, and it is open-grained, so a smooth painted finish needs grain filling. Both are entirely doable and both cost money. The painting page covers the preparation.
Stained cabinets
This is where the movement table earns its keep, because a stained five-piece door shows its panel shoulder line far less than a painted one, but a wide panel still moves. Cherry at 0.00248 is the classic answer: stable, fine-grained, and it darkens beautifully with age. Walnut at 0.00274 is the premium option. Quartersawn white oak at 0.00194 radial is the stable choice for anybody who wants oak.
Inset doors
Inset is the least forgiving construction on this coast, because the door sits inside a fixed opening with an even reveal on all four sides and the reveal is what changes. Keep to the top half of the hardwood table, and consider quartersawn for anything wide. Southern magnolia, cherry and quartersawn white oak are the three that behave best.
Closets, pantries and linings
Eastern red cedar at 0.00162 tangential is the most stable species in either table and the traditional closet lining for reasons of aroma and insect resistance. It is too soft and too strongly scented for kitchen doors, but in a closet or wardrobe it is both stable and appropriate.
Movement is not the only axis
Choosing purely on the movement table would produce some odd kitchens. Three other properties matter and they sometimes pull the other way.
| Property | Why it matters | Species notes |
|---|---|---|
| Hardness | Dent resistance on drawer fronts and door edges | Hickory and hard maple are very hard; poplar, magnolia and pine dent easily |
| Grain openness | Whether a smooth painted finish needs grain filling | Oak, ash and hickory are open-grained; maple, cherry and poplar are closed |
| Tannin content | Whether a stain-blocking primer is needed under paint | Oak and some walnut bleed; maple and poplar do not |
| Colour change with age | Whether new work will match old work in two years | Cherry darkens markedly; maple ambers slowly; walnut lightens |
These are general working properties used in cabinetmaking. The movement figures in the tables above are the published federal ones.
Cherry's colour change is worth its own sentence, because it catches people out. Cherry darkens substantially in its first year or two of light exposure. A cherry kitchen looks noticeably different at two years old than on installation day, which is lovely if you were expecting it and alarming if you were not. It also means matching new cherry to old cherry is close to impossible on day one.
Where the movement actually shows up
A tenth of an inch sounds like nothing until you know where it appears. Panel movement concentrates at specific joints and specific reveals, and those are the places worth matching the species choice to.
The panel shoulder on a five-piece door
The most visible place, and the one people ask about most. When a floating panel shrinks it withdraws from the frame groove and exposes a hairline of previously hidden material. Wide panels show it more, because the movement scales with width. A 24 inch panel in beech moves 0.41 inch; the same panel in magnolia moves 0.22. Over a five-piece door with the panel centred, that is roughly half the movement at each shoulder.
Inset door reveals
An inset door sits inside a fixed opening with a reveal on all four sides, so any movement in the door's own width closes or opens that reveal directly. This is the construction with the least tolerance on the Gulf Coast and the strongest argument for a low-movement species or a quartersawn cut.
Wide end panels and cabinet sides
A finished end panel on an island or at the end of a run can be 24 to 36 inches wide, and if it is a solid glued-up panel rather than a veneered sheet it moves accordingly. This is one of the reasons good cabinetry uses sheet goods for wide panels and solid stock only for narrow frame members.
Long horizontal runs
Movement along the grain is negligible, which is why a 12 foot run of cabinets does not grow by an inch in summer. All the movement discussed on this page is across the grain, which is why width is the dimension that matters and length is not.
| Component | Movement exposure | Species priority |
|---|---|---|
| Inset door panels | Highest; reveal visible on four sides | Top of the stability table, or quartersawn |
| Wide five-piece door panels | High; shoulder line visible if painted | Low tangential coefficient, or an MDF panel |
| Solid end panels over 24 in | High | Use a veneered sheet instead of solid stock |
| Door stiles and rails | Low; narrow members move little | Choose on hardness and grain, not movement |
| Face frames | Low; narrow members | Choose on paintability or grain match |
| Drawer fronts under about 8 in deep | Low | Choose on hardness; these take the most abuse |
Movement scales with the width of the piece, so narrow members are largely exempt from this whole discussion.
Putting it together for a Mobile kitchen
- For painted work: poplar or maple frames with MDF panels. Movement is a non-issue and the finish stays flat.
- For stained work with wide panels: cherry, walnut or southern magnolia, all in the stable half of the table.
- For oak, specify quartersawn if the panels are wide, which halves the movement and adds the ray fleck.
- For inset doors anywhere: stay in the top half of the hardwood table, and consider quartersawn.
- For drawer fronts that take daily abuse: weigh hardness alongside movement, which pushes toward maple.
- For closet linings: eastern red cedar, the most stable species in either table.
- In every case, ask for the species and the cut to be named on the quote, because flat-sawn and quartersawn are different products at different prices.
Species is one of three decisions that determine how a cabinet behaves here. The other two are covered in the materials guide and the painted versus stained guide. For how it all goes together into a finished kitchen, see custom cabinets, or start a measured quote at contact.