Free estimate — verify against local code before building
Board and Batten Siding Calculator
Estimate vertical field boards or panels and a separate batten stock layout with editable coverage, spacing, waste, and prices.
What this calculator includes
Build a board-and-batten-specific takeoff from repeated wall dimensions, openings, installed field-piece width, vertical stock length, and entered batten spacing. Field pieces are counted as whole columns times vertical stock segments rather than pooling wall area across unusable offcuts; entered openings still require an elevation cut plan before they can safely reduce that count. This is more detailed than the general siding-area calculator but is not a control-joint, water-management, fastening, wind, fire, or structural design.
Next step in your project
Place the board-and-batten takeoff in an installed budget
Compare material quantities with editable low, expected, and high labor, removal, access, and contingency assumptions.
Open Siding Cost Calculator →How to use this board & batten siding calculator
- 01
Measure repeated wall sections
Enter one representative wall, the number of matching walls, and combined openings. Separate elevations when height, product, layout, or access changes.
- 02
Choose the field system
Select panel or individual-board mode and enter the installed coverage width and stock length from the exact product.
- 03
Lay out battens independently
Enter the approved batten spacing and stock length. The calculator counts vertical layout lines per wall and does not assume field-piece width controls batten spacing.
- 04
Review vertical joints and packages
If stock is shorter than the wall, the calculator counts multiple full segments in every column and shows a joint-plan warning. Adjust waste, packages, and prices only after checking the approved elevation and reusable offcuts.
Worked example
Example: two 24 by 9 ft walls
A 24-foot wall needs six 48-inch field columns. Because 8-foot stock is shorter than the 9-foot wall, each column uses two vertical stock segments: 24 pieces across two walls before the 10% allowance, or 27 pieces after rounding. Openings may create reusable cuts, but only an elevation layout can safely reduce that conservative order.
Practical buying and overage guidance
Create an elevation drawing before ordering. Confirm installed coverage, panel or board grade, moisture condition, joint and batten details, corners, openings, furring or rainscreen, water-resistive barrier, flashing, clearances, finish, fasteners, stock lengths, delivery protection, and compatible accessories. Keep long unbroken pieces separate from reusable short offcuts.
Continue the project
Replace House Siding
Plan siding areas, gables, openings, cartons or boards, wrap, trim, flashing, paint, disposal, access, labor, and project pricing.
Open the project workflow →Calculation sources and review
Primary references and formula assumptions are linked so you can verify them against the selected product, supplier, and adopted local requirements.
Internal formula review completed July 13, 2026. What this review covers
- APA - The Engineered Wood Association (opens in a new tab)
Engineered-wood panel and siding resources, including grade and installation considerations.
- James Hardie - technical documentation (opens in a new tab)
Manufacturer example of product-specific coverage, joint, fastening, clearance, and flashing requirements.
- International Code Council - model codes (opens in a new tab)
Model-code resources; verify the adopted local edition and approved wall assembly.
Frequently asked questions
How many battens do I need?
The calculator divides each wall length by the entered batten spacing, adds an end layout line, multiplies by wall height and wall count, adds waste, then rounds to whole stock lengths.
Is batten spacing the same as board width?
Not necessarily. Panel grooves, board seams, architectural layout, openings, corners, fastening, and product instructions can control batten centers. Enter the approved layout spacing separately.
Why do openings not automatically reduce every field piece or batten?
Opening area does not reveal which vertical columns are interrupted, whether offcuts can be reused, or where battens continue beside the trim. The calculator uses openings for net area and fastener planning but keeps conservative full-column and batten counts until an elevation cut list can refine the order.
What happens when stock is shorter than the wall?
Each vertical column is split into the required number of full stock segments and a warning is shown. This is a conservative material allowance, not approval for horizontal joints or a promise that every offcut is reusable.
Does the calculator include housewrap and flashing?
No. Water-resistive barrier, rainscreen, flashing, furring, corners, trims, sealants, insect screening, and transitions depend on the approved wall system.
Can I use the result as a fastening schedule?
No. The fastener quantity is an editable shopping allowance only. Product, substrate, framing, wind, exposure, corrosion, and approved documents control fastener type and spacing.