What is Tongue & Groove?
Tongue and groove is a precision-milled joinery method commonly used in wooden boards, especially for siding, paneling, and ceilings. Each board features one edge with a protruding ridge (the “tongue”) and another with a matching recessed slot (the “groove”). When installed, these boards interlock tightly, creating a smooth, seamless surface that’s both structurally strong and visually clean—ideal for interior and exterior applications.
Eastern Red Cedar Tongue and Groove Boards
At Mountain Milling Co., we manufacture high-quality Eastern Red Cedar tongue and groove boards in three standard sizes to suit a wide range of projects:
1/2″ x 5″ x 8′ Cedar
This affordable board is a great way to bring the natural beauty and aroma of cedar into your home. It offers a 4 1/2″ reveal and covers approximately 3 square feet per board, delivering excellent value. Each board is kiln-dried for stability and reversible, featuring a smooth face on one side and a V-groove on the other for added design flexibility.
1/2″ x 6″ x 8′
Slightly wider than the entry-level option, this board provides more coverage per piece and a stronger presence in your space. It covers 3.5 square feet per board. Like all our tongue and groove products, it’s kiln-dried and reversible, giving you the choice between a clean smooth face or a V-groove finish.
3/4″ x 6″ x 8′
For projects where durability matters just as much as style, this thicker board delivers. With 3.5 square feet of coverage per board, it’s a premium choice. Kiln-dried for consistent performance and reversible for design flexibility, this board is ideal for porch ceilings, high-traffic areas, or anywhere you want long-lasting cedar charm.
Why 8 Feet? Simplicity, Consistency, and Easy Shipping
We keep it simple: every Eastern Red Cedar tongue and groove board we sell is a standard 8 feet long. That means faster installation, consistent coverage, and affordable, hassle-free shipping across the continental U.S. No mixed lengths. No surprises. Just clean, uniform boards—ready to go.
Popular Uses for Eastern Red Cedar Tongue & Groove
Wall Paneling
Cedar wall paneling instantly transforms any room. The rich grain and natural reddish hue add warmth and texture, while the tongue and groove design ensures an easy fit—even for DIYers. Perfect for bedrooms, living rooms, cabins, and feature walls.
Ceilings
Cedar ceilings bring depth, character, and acoustic softness to interior spaces. Use the smooth face for a clean, contemporary look or flip to the V-groove side for a more traditional finish. Ideal for great rooms, kitchens, porches, and vaulted ceilings.
Closet Liners
Eastern Red Cedar is a classic choice for closet and storage linings. Its naturally aromatic oils freshen the air and help deter insects like moths—making it both beautiful and functional.
Accent Projects
From hallway treatments to fireplace surrounds, cedar tongue and groove boards make it easy to add a bold design statement. The dual-face profile blends seamlessly into rustic, farmhouse, or modern interiors.
Soffits & Covered Outdoor Spaces
Lightweight, durable, and weather-resistant, cedar tongue and groove is also ideal for soffits, breezeways, and covered porch ceilings. Bring the same warmth and character outdoors with confidence.
Frequent Questions
Is tongue and groove easy to install?
Yes, tongue and groove is a user-friendly product that can be installed by DIYers with some basic tools. We recommend checking out some online resources or instructional videos for specific installation techniques.
What kind of wood do your tongue and groove boards come in?
We offer tongue and groove boards in eastern red cedar only. Each piece of wood has its own unique characteristics and aesthetic appeal.
Can tongue and groove boards be painted or stained?
Absolutely! Tongue and groove boards can be painted or stained to match your desired look and décor. Make sure to choose a paint or stain that is suitable for your desired use.
What is the difference between the 1/2 inch and 3/4 inch thickness options?
The main difference is strength and weight. The 1/2 inch option is ideal for lighter applications like wall paneling, while the 3/4 inch offers more stability for projects like wainscoting or ceilings.
Do you sell any finishing materials for tongue and groove boards?
Yes, we offer a selection of Stains & Sealers.
Can I use tongue and groove boards in bathrooms or kitchens?
While tongue and groove can be used in these spaces, it’s important to note that they are not waterproof. For areas with high moisture exposure, consider using a moisture-resistant material or sealing the boards with a suitable product.
Specializing Teams
Ryan Kelley
Manager
Wirt McKee
Founder
