Board and Batten vs Wainscoting vs Shiplap: What's the Difference?
By the developer of BattenCalc · Last updated October 17, 2026
Short answer: Wainscoting is where paneling goes: the lower part of a wall, capped by a rail. Board and batten is a pattern of vertical strips over a flat surface. Shiplap is a board type with rabbeted edges that overlap. They overlap too: board and batten is often installed as wainscoting, and shiplap can be too.
That is why the three terms get mixed up. They don't compete on the same level. One describes height, one a pattern, one a joint. What does differ a lot is how you plan, measure and buy materials for each. This guide covers decorative interior walls; exterior siding follows its own rules.
Definitions in one paragraph each
Wainscoting. The Handyman's Daughter describes wainscoting as a covering over the lower portion of a wall, usually about the lower third, typically finished with a rail on top. It began as wall protection and is now mostly decorative. Wainscoting can be made from beadboard, board and batten, or applied trim boxes (picture-frame molding), or built as true raised panels.
Board and batten. A pattern of rectangles separated by narrow strips. On old siding and barns, the battens covered the gaps between wide boards. Indoors, battens are often attached straight onto drywall to get the look without the boards underneath. It can run as a low band, two-thirds of the way up, or all the way to the ceiling.
Shiplap. The American Softwood Lumber Standard (PS 20) defines shiplapped lumber as lumber "worked or rabbeted on both edges of each piece to provide a close-lapped joint by fitting two pieces together." The boards cover the whole wall surface, horizontally or vertically, with a small shadow line at each joint.
Side-by-side comparison
| Board and batten | Wainscoting (framed panels) | Shiplap | |
|---|---|---|---|
| What it describes | A pattern | A height and style of wall paneling | A board edge profile |
| Covers the whole surface? | No, battens over a painted wall | No, rails and stiles or frames over a painted wall | Yes, board to board |
| Usual height | One-third, two-thirds or full | Usually around one-third, capped by a chair rail | Any; often full wall or an accent |
| Main measurement | Equal gaps between battens | Equal panel widths between stiles, plus panel height | Number of rows = wall height ÷ board face width |
| Joints to hide | Few: butt joints where battens meet rails | Many: mitered corners on picture-frame molding | Long joints at every row |
| Bought as | 1x2 to 1x6 boards, by the piece | Rails, stiles or molding, by the piece | Shiplap boards, by linear foot or coverage |
| Planning difficulty | Moderate: spacing must be exactly even | Highest: widths and heights both matter | Lowest layout math; most material |
How the math differs
This is the part comparison articles usually skip. Each style answers a different layout question.
Board and batten: equal gaps
You pick a batten width and a target gap, then make every gap identical:
gaps (k) = round( (W − 2e + b) ÷ (target + b) )
gap = (W − 2e − (k − 1) × b) ÷ k
On a 120-inch wall with 1x4 battens (3 1/2" actual) at both ends and an 18-inch target: k = 5, gap = (120 − 7 − 14) ÷ 5 = 19.8" (19 13/16"), six battens total. The details are in our guide to board and batten spacing.
Wainscoting: equal panels inside a fixed height
Framed wainscoting solves two dimensions. Panel width:
panel width = (W − (n + 1) × s) ÷ n
On a 144-inch wall with 3 1/2-inch stiles and five panels: (144 − 21) ÷ 5 = 24.6". Panel height then comes from the chair-rail height minus the cap, top rail, bottom rail and baseboard. With a 32-inch chair rail, a 3/4-inch cap, a 2 1/2-inch top rail, a 7 1/2-inch bottom rail and a 5 1/2-inch baseboard, that leaves 15 3/4". See how tall wainscoting should be for choosing the height.
Shiplap: rows and linear feet
Shiplap has almost no layout math. You count rows and buy enough board to fill them. The key number is the board's face width, the part that shows. PS 20 requires the lap on shiplapped lumber to be at least 3/8 inch wide, and the overall board width is the face width plus the lap. If you measure the full width of the board, you'll overestimate coverage.
rows = wall height ÷ face width (round up; the last row is ripped)
linear feet = rows × wall width in feet
Example: suppose your shiplap covers 5 1/2 inches per row (check the label or measure the face). On a 96-inch-tall, 10-foot-wide wall: 96 ÷ 5.5 = 17.45, so 18 rows, and 18 × 10 = 180 linear feet before any allowance for cuts and defects.
Which uses less material?
For the same 10-foot × 8-foot wall, here is the material by length, using the examples above:
- Board and batten, full height: six 1x4 battens. With a 1x4 top rail at the ceiling and no baseboard, each batten is 96 − 3.5 = 92 1/2". That's 6 × 92.5 = 555", or 46 1/4 feet, plus a 10-foot top rail: about 56 linear feet.
- Shiplap, full height: about 180 linear feet.
Shiplap needs roughly three times the board length because it covers the whole wall, while battens cover only strips. That is a material-length comparison, not a price comparison: price per foot varies a lot between pine, MDF and specific shiplap products, so check local prices for the boards you would actually buy.
How to choose
Pick board and batten if you want a strong vertical pattern, your drywall is in decent shape, and you are comfortable with careful spacing. It's the least material for a full-height feature wall.
Pick framed wainscoting if you want a more traditional or formal look, the room has a natural chair-rail line, and you don't mind more cuts. Picture-frame boxes need four mitered pieces each, so accuracy matters.
Pick shiplap if you want a continuous, textured surface, the wall has flaws you'd rather cover entirely, or you want horizontal lines. Expect to buy and handle much more material.
Combine them when it suits the room. Board and batten below a chair rail is board-and-batten wainscoting. Shiplap below a cap rail is shiplap wainscoting. The Handyman's Daughter makes this point directly: you can have board and batten styled wainscoting.
Planning steps that apply to all three
- Measure the wall width and height in a few places; walls are rarely square.
- Decide the height: band, two-thirds or full.
- Use actual material sizes. A 1x4 is 3 1/2 inches wide, not 4, per PS 20.
- Mark outlets, switches and windows before laying anything out.
- Lay out from one reference edge with cumulative marks, so rounding errors don't add up across the wall.
- Tape the layout and look at it from the doorway before cutting.
Plan the layout before you choose
If you are deciding between the two trim styles, it helps to see both on your own wall. The free board and batten calculator gives equal batten spacing, marks and a cut list, and the free wainscoting calculator gives equal panel widths, panel height from your chair-rail line, and stile marks. Both draw your wall to scale and work in inches or millimeters. Run the same wall through each and compare the drawings.
How we calculate
Board and batten spacing uses k equal clear gaps between end battens. Wainscoting uses n panels and n + 1 stiles, and panel height subtracts the actual cap, rails and baseboard from the chair-rail top. The shiplap row count above is simple division by face width and is not part of our calculators. Method notes are on methods and sources.
FAQ
Is board and batten considered wainscoting?
It can be. Wainscoting describes paneling on the lower part of a wall; board and batten is a pattern. When board and batten stops at about one-third of the wall with a cap rail, it is board-and-batten wainscoting. Full-height board and batten is usually just called a board and batten wall.
Should I do wainscoting or board and batten?
Board and batten gives a simpler, more casual vertical look with less cutting. Framed wainscoting looks more traditional and formal but needs more pieces and mitered corners. Decide on height first, then tape out both patterns on the wall.
What's the difference between wainscoting and shiplap?
Wainscoting is a lower-wall treatment; shiplap is a type of board with rabbeted, overlapping edges. You can build wainscoting out of shiplap by running it to chair-rail height and capping it, or run shiplap floor to ceiling.
Is shiplap or board and batten cheaper?
By material length, board and batten usually needs far less. On a 10 × 8 ft wall, about 56 linear feet of 1x4 versus about 180 linear feet of shiplap in our example. Actual cost depends on the price per foot of the products you choose.
What is board and batten vs beadboard?
Beadboard is narrow tongue-and-groove paneling with a bead along each board. Like shiplap, it covers the whole surface. Board and batten uses separate strips with plain wall between them. Beadboard is often installed as wainscoting.
Sources
- The Handyman's Daughter, Wainscoting vs Board and Batten (definitions; board-and-batten styled wainscoting).
- NIST, PS 20, American Softwood Lumber Standard, section 3.3.3.2 (shiplapped lumber definition), lap-width notes, and Table 1 (actual sizes).
- Doors2Floors, Wall Panelling: How to Measure, Fit and Style It (beadboard as narrow tongue and groove; applied vs. true panelling).