Horizontal run of the wall
Floor to ceiling, or run height
Coverage is the exposed face after the lap/gap, not the nominal width
Identical walls to multiply
Total windows/doors. Leave 0 for a full accent wall.
10% standard, 15% for lots of cuts
The go-to accent-wall board. Takes paint or stain and installs clean.
Shiplap Material Takeoff
Boards Needed
32 boards
253 linear feet of 8' 1x6 True Shiplap
Estimated Cost
Where the Money Goes
12,800+ estimates calculated this month
Last updated: June 2026. National average shiplap material and installed pricing. These are estimates only and regional costs vary, so get local quotes before you bid.
Take Off Shiplap by Coverage, Not Board Width
I have hung enough shiplap to tell you the number that burns people is coverage. A 1x6 board reads 5.5 inches wide on the tag, but once the lap joint engages it only covers about 5 inches of wall. Order off the nominal width and you come up a row or two short on a feature wall, which always seems to happen at 4pm with the supplier already closed.
This calculator divides your net wall area by the real exposed coverage of the profile you pick, adds your waste, then converts to a board count off your stock length. You get linear feet and pieces, not a guess.
Shiplap Coverage and Material Pricing
| Material | Material $/sf | Interior/Exterior | Best For |
|---|---|---|---|
| MDF / Primed | $1.50-$3.00 | Interior only | Painted accent walls, budget jobs, dry rooms |
| Pine / Primed Boards | $2.50-$4.50 | Interior | The standard accent-wall pick, paint or stain |
| PVC / Composite | $3.50-$7.00 | Exterior / wet | Bathrooms, exteriors, zero rot risk |
| Cedar | $4.00-$9.00 | Exterior | Premium stain-grade exterior shiplap |
Prices are 2026 national averages and add labor of roughly $2 to $5 per square foot installed. Your local market may vary 10-25%. Use the location input above for a regional estimate, and always get local quotes before you bid.
Shiplap Estimating Guide
How to take off shiplap by coverage instead of nominal width, board sizes, and installed cost ranges for accent walls and exteriors.
How Do You Calculate Shiplap?
Calculate shiplap by the square footage of the wall divided by the exposed coverage of each board, then add 10-15% for waste. The number most people get wrong is coverage: a 1x6 shiplap board is 5.5" wide on paper, but the rabbet joint or nickel gap means it only covers about 5 inches of wall. Order off the nominal width and you come up short.
The math runs in this order:
- Net area: Wall width x height, minus any windows or doors
- With waste: Net area x 1.10 (10%) for cuts and culls
- Linear feet: Area with waste divided by board coverage in feet (5" coverage = 0.417 ft)
- Board count: Linear feet divided by your stock board length, rounded up
For a 12 ft x 8 ft accent wall in true 1x6 shiplap, that is 96 sq ft, about 106 sq ft with waste, roughly 253 linear feet, or 32 boards at 8 ft each.
Key Takeaways
- Divide wall area by board coverage, not nominal width
- A 1x6 shiplap board covers about 5 inches, not 5.5
- Add 10-15% waste before you convert to board count
Shiplap Coverage by Board Size
Coverage is the exposed face left after the boards lap or gap together. These are the numbers I use when I do a takeoff, and they are what the calculator runs on.
| Nominal Size | Actual Width | Exposed Coverage | Sq Ft per 8' Board |
|---|---|---|---|
| 1x4 | 3.5" | ~3.25" | 2.2 sf |
| 1x6 (true shiplap) | 5.5" | ~5.0" | 3.3 sf |
| 1x6 (nickel gap) | 5.5" | ~5.5" | 3.7 sf |
| 1x8 | 7.25" | ~6.75" | 4.5 sf |
Wider boards cover faster and leave fewer seams, which is why a 1x8 reads as a more modern, calm wall. Narrow 1x4 gives you that busy, traditional plank look but eats more linear feet and more labor per square foot.
Key Takeaways
- 1x6 true shiplap covers about 5 inches of wall per board
- Nickel gap boards cover close to their full 5.5 inch width
- Wider boards mean fewer seams and less install labor
What Does Shiplap Cost to Install?
Installed shiplap runs $4 to $14 per square foot depending on material, height, and how clean the trim-out needs to be. Material alone is a small slice. The labor, paint, and detail work around outlets and corners are where the real hours go.
- MDF / primed (interior): $1.50-$3.00/sf material. Cheapest, paint only, keep it dry
- Pine boards (interior): $2.50-$4.50/sf material. The standard accent-wall pick
- PVC / composite (exterior or wet): $3.50-$7.00/sf material. Moisture-proof
- Cedar (exterior, stain-grade): $4.00-$9.00/sf material. Premium, rot-resistant
- Install labor: $2-$5/sf depending on ceiling height and cut complexity
- Paint or stain (2 coats): $0.80-$1.80/sf
A standard 96 sq ft interior accent wall in primed pine usually lands around $650 to $1,300 installed and painted. Prices vary by region and 2026 lumber pricing, so price your own material and get local labor numbers before you commit a bid.
Key Takeaways
- Installed shiplap typically runs $4-$14 per square foot in 2026
- Labor and paint usually cost more than the boards themselves
- A 96 sq ft primed-pine accent wall runs about $650-$1,300 installed
How to Use This Calculator
Measure the Wall
Enter the wall width and height in feet. For multiple identical walls, set the number of walls and the calculator multiplies the area. Subtract large windows or doors in the openings field.
Pick Your Shiplap Profile
Choose the board size. The calculator uses the exposed coverage of each profile, not the nominal width, so a 1x6 true shiplap is figured at 5 inches of coverage instead of 5.5. This is the step most takeoffs get wrong.
Set Board Length and Waste
Choose your stock board length (8, 12, or 16 ft) and a waste factor. Use 10% for a clean rectangular wall and 15% when there are lots of cuts, outlets, or angles.
Read the Boards and Cost
The calculator returns total linear feet, the number of boards to buy, and an installed cost range for material, labor, and paint. Add your location to adjust the cost to your region.
Shiplap Calculator Formulas
Net Area = (Wall Width x Wall Height x Walls) - Openings
Area With Waste = Net Area x (1 + Waste %)
Coverage (ft) = Exposed Board Face (in) / 12
Linear Feet = Area With Waste / Coverage (ft)
Boards Needed = round up( Linear Feet / Board Length )
Rows = round up( Wall Height in inches / Coverage )Where:
- Net Area
- = Wall area to cover after subtracting windows and doors
- Exposed Board Face
- = Coverage per board after the lap or gap (1x6 true shiplap = ~5 in)
- Waste %
- = Allowance for cuts and culls, typically 10-15%
- Linear Feet
- = Total running feet of board to buy
- Board Length
- = Stock length you are buying: 8, 12, or 16 ft
- Boards Needed
- = Pieces to order, always rounded up to whole boards
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Frequently Asked Questions
How do I calculate how much shiplap I need?
Take the wall square footage and divide by the exposed coverage of each board, then add 10-15% for waste. The key is coverage, not nominal width. A 1x6 shiplap board measures 5.5" wide but only covers about 5" once the lap joint is engaged. For a 12 ft x 8 ft wall (96 sq ft) in true 1x6, you need roughly 253 linear feet of board, or 32 pieces at 8 ft each. The shiplap calculator handles the coverage math for you.
How much does shiplap cost per square foot installed?
Installed shiplap runs $4 to $14 per square foot in 2026, depending on material and labor. Primed MDF or pine material is $1.50-$4.50/sf, PVC and cedar run higher, install labor adds $2-$5/sf, and paint or stain adds another $0.80-$1.80/sf. Prices vary by region, so get local quotes before you lock in a bid.
What is the difference between true shiplap and nickel gap?
True shiplap has a rabbeted lap joint where the boards overlap, which hides the seam and leaves a small reveal. Nickel gap is a square-edge board installed with a consistent gap (about the thickness of a nickel) between rows. True shiplap covers about 5" per 1x6 board because of the overlap; nickel gap covers closer to the full 5.5". Pick the profile in the calculator so the board count matches what you actually install.
How do contractors price a shiplap accent wall for a client?
I price the boards off the takeoff, then add labor by square foot based on ceiling height and how much cutting the wall needs around windows, outlets, and corners. A simple 96 sq ft accent wall might be 6-10 labor hours; a two-story stairwell wall is a different animal. I always include paint or stain, fasteners, and caulk as line items so nothing gets buried. Try EstimationPro free to turn the material list into a full proposal in minutes.
How many boards of shiplap come in a box?
It depends on the product. Engineered and primed shiplap is often sold by the square-foot carton, commonly covering 14-16 sq ft per box, while dimensional pine and cedar are sold as individual boards. The calculator gives you both linear feet and a board count, so you can convert to whatever unit your supplier sells. Always round up to full boxes or boards and keep the extras for future repairs.
How much waste should I add for shiplap?
Add 10% for a clean rectangular wall and 15% when the wall has lots of cuts, like a stairway, a wall full of windows, or boards running at an angle. Longer boards waste a little more on cut-offs but leave fewer seams. If you are matching a specific board run or doing a herringbone or diagonal pattern, bump waste to 20%.
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