What Is Board and Batten Siding?

Old-style barns were generally constructed from wooden planks that served as both the interior and exterior walls. This type of construction was quick, efficient, and could usually be built from locally sourced wood. With no insulation, however, these barns were cold during the winter months. To reduce the number of cold drafts entering the barn, farmers would often nail thin wood slats in the joints between two wooden planks. While morning milking and other barn chores were still a cold affair in the winter months, these thin slats diminished the barn's amount of air leakage.

Over time, the distinctive exterior siding of barns became known as board and batten. Home contractors would alternate wide boards with narrower wooden strips. The wider boards are between 12 and 14 inches thick, with the thinner strips of 1-3 inches placed where the two boards meet. Whereas most barns used to be built with vertical board and batten siding, modern-day home contractors use this exterior siding in vertical and horizontal presentations. Board and batten siding can even be used on home interiors for a rustic, cabin-like feel.

Though board and batten siding has traditionally been used for wooden exteriors, many home contractors today use this design for other types of siding alternatives. Vinyl siding, fiber cement siding, engineered wood siding, aluminum siding, and other alternative cladding options have incorporated board and batten aesthetic.

What Is the Best Wood to Use for Board and Batten Siding?

Choosing wood siding for the exterior of your home comes with several benefits. Firstly, wood is one of the few "carbon-neutral" building materials available. The carbon dioxide emitted during the manufacturing, transporting, and building process was extracted from the atmosphere as the tree grew. 

That carbon is sequestered in the wood for as long as it remains a part of your home. Some hardwood species can easily remain usable for centuries. By choosing sustainably harvested board and batten siding, homeowners can do their part to reduce their carbon footprint. Read more about the best wood certification and sustainable forestry programs here.

Some building professionals or contractors might advise against using wood exterior siding due to concerns about rotting, insect infestation, and warping due to moisture. While all of these issues can arise, proper maintenance, including regular sealing and painting, can avoid these issues. In addition, several "rot-resistant" species of trees are an excellent option for board and batten siding.

Cedar is one of the most common (and relatively affordable) exterior siding options built as board and batten. It is naturally resistant to insects such as termites, and when properly treated, it can last for several decades. Low-grade cedar siding might cost as little as $3 to $4 per square foot, while higher-grade options can cost upwards of $10 per square foot.

Other hardwood species such as Redwood, Hemlock, Locust, White Oak, and Cypress offer excellent durability and rot-resistance. However, this type of lumber can be harder to source. So, you should expect to pay a premium price. Engineered wood siding products can be combined with certain trims to give a board and batten layering effect. Engineered panels are generally less expensive, and they can be highly durable as well.

How Far Apart Should Board and Batten Siding Be?

For natural wood siding, the most commonly used type of lumber is a 1-inch by 10-inch board. If installed vertically with a 2-inch "batten," the result will be eight inches of reveal on the board interspersed with the 2-inch batten. However, if you find different lumber dimensions, feel free to experiment with spacing options. Many engineered wood siding products that incorporate the board and batten layered effect have significantly thinner spacing profiles.

How to Install Board and Batten Siding?

It is necessary for homeowners who are self-installing their board and batten siding to carefully calculate the wall's length. This way, you will be sure to have equally spaced boards. To do this, follow these steps:

1. Find the number of spaces: Measure your wall's total length and divide that number by your desired spacing between each batten. That number will give you the total number of "spaces" you have on your wall.
2. Find the number of battens: Add "one" to the total number of spaces, and you will have the calculation for the number of battens you need.
3. Calculate the spacing between battens: Multiply the desired width of your batten planks by the number of battens and subtract that number from the wall's total length. Divide that number by the number of spaces calculated earlier. This total will give you the precise spacing you should use between each batten.

Consider the following example to guide you through the steps above. 

1. The number of spaces: A 240-inch length wall that wants 10-inch spacing would have 24 spaces.
2. The number of battens: Those 24 spaces + 1 would give you 25 total batten pieces.
3. If you wanted a 3-inch batten width x the 25 total batten pieces, you would end up with 75 inches of total batten width. The 240-inch wall-length minus the 75 inches of total batten width would leave you with 165 inches of wall length minus the batten space. Finally, divide the 165 inches of wall length minus the battens by the 24 spaces calculated initially. So, you would have a spacing of 6.9 inches between each batten.

You can do several of these calculations to determine the best spacing for your board and batten siding.