Board and Batten Siding Calculator

About the Board and Batten Siding Calculator

Board and batten is a vertical siding style where wide boards are placed side by side with narrow strips (battens) covering the joints between them. This traditional farmhouse aesthetic has surged in popularity for both rustic and modern exteriors.

Calcuting board and batten materials requires knowing the total wall width (horizontal linear feet), the board width, the batten width, and the gap (if any) between boards. Each wall section's width determines how many boards fit, and the number of battens is typically one fewer than the number of boards per section (since battens cover the gaps between boards).

This calculator estimates the total boards, battens, and board feet of lumber needed. It works for wood, fiber cement, or engineered wood board-and-batten installations.

When This Page Helps

Board and batten requires two separate materials (boards and battens) with different widths. This calculator counts both, preventing the common mistake of ordering battens 1:1 with boards (you need fewer battens than boards).

How to Use the Inputs

1. Enter the total wall width (linear feet of horizontal run) and wall height.
2. Enter the board width (typically 8–12 inches).
3. Enter the batten width (typically 2–4 inches).
4. Enter the gap between boards (0 for butt-joint, 1/2" is common).
5. Enter a waste factor.
6. Review the board and batten counts.

Example Calculation

Tips & Best Practices

• Use 1×10 or 1×12 boards for wide, dramatic proportions and 1×3 battens for the classic look.
• Leave a 1/4–1/2" gap between boards to allow for wood expansion (cover with the batten).
• For rain screen performance, install over furring strips with a drainage plane behind.
• Pre-stain or pre-paint all six sides of each board and batten before installation.
• Fasten boards at the center only (one nail per stud) to allow expansion. Fasten battens through the gap, not through the boards.
• Start layout from the center of the wall for a balanced appearance.

Board and Batten Layout

Start by planning the layout on paper. Divide each wall's width by the board-plus-gap width to find how many boards fit. Adjust the gap slightly so boards are evenly spaced with no partial board at the edges. Alternatively, start from the center and work outward for a symmetrical appearance.

Material Selection

Cedar is the traditional choice for its stability, rot resistance, and beautiful grain. Engineered wood (LP SmartSide) offers affordability and consistent quality. Fiber cement provides the best fire resistance and longest paint life. PVC (cellular PVC) boards never rot but are more expensive.

Modern Board and Batten

Contemporary designs use wider boards (12"+) with very narrow battens (1.5–2") for a sleek look. Some modern homes use board and batten on accent walls only, combining it with horizontal siding or stone on other walls. Dark colors (charcoal, navy, black) are trending for modern board-and-batten exteriors.

Frequently Asked Questions

• What width boards and battens should I use?

  Classic proportions use 8–12" wide boards with 2–4" battens. A popular modern combination is 10" boards with 3" battens. Wider boards (12") create a bolder, more contemporary look. The batten should be wide enough to cover the gap between boards plus overlap 1/2" on each side.

• How is board and batten different from vertical siding?

  Board and batten is a type of vertical siding. Other vertical styles include channel siding (with routed channels), board-on-board (overlapping boards without battens), and tongue-and-groove vertical. Board and batten is distinguished by the alternating wide boards and narrow cover strips.

• Can I use fiber cement for board and batten?

  Yes. James Hardie and other manufacturers make fiber cement board and batten panels. These come as a single panel that mimics the board-and-batten look or as separate board and batten pieces. Fiber cement offers fire resistance and lower maintenance than wood.

• How do I handle corners?

  Inside corners use a vertical trim board. Outside corners can use miter joints, corner boards (two boards forming an L), or metal corner trim. Many designs use extra-wide corner boards (4–6" per face) as a design accent.

• What is board-on-board vs. board and batten?

  Board-on-board uses two layers of equal-width boards where the outer boards overlap the gaps between the inner boards. Board and batten uses one layer of wide boards with narrow battens covering the gaps. Board-on-board uses more material but has a thicker, more layered appearance.

• How do I flash windows and doors?

  Window and door openings need head flashing, drip cap, and J-channel or casing trim. The vertical boards are cut to terminate at the trim. Z-flashing above windows prevents water from running behind the siding. Follow the manufacturer's flashing details for warranty compliance.