Tongue & Groove
Tongue and groove wood offers a clean, continuous look for walls, ceilings, siding, and other architectural applications. At Mason’s Mill & Lumber, we offer a variety of wood species, profiles, and finishes for both interior and exterior projects.
What Is Tongue & Groove Wood?
Tongue and groove, commonly referred to as T&G, is a milling profile that allows adjoining boards to fit together using a tongue on one edge and a matching groove on the other.
This connection creates a consistent surface with clean lines and a uniform appearance. Depending on the profile and wood species, tongue and groove can complement traditional, rustic, or modern architectural styles.
From traditional Southern Yellow Pine to thermally modified hardwoods and softwoods, our team can help you find the right material for your project.
Browse Tongue & Groove Stock
Aromatic Cedar 4/4 Rough Lumber (Indiana)
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Regarded as excellent in resistance to both decay and insect attack, aromatic red cedar is frequently used for fence posts used in direct ground contact with no pre-treating of the wood.
Overall, aromatic red cedar is easy to work, notwithstanding any knots or irregularities present in the wood. It reportedly has a high silica content, which can dull cutters. Aromatic red cedar glues and finishes well, though in many applications, the wood is left unfinished to preserve its aromatic properties.
Cedar has a distinct and tell-tale scent: the wood is commonly used in closets and chests to repel moths and other insects. Though eastern red cedar trees are widely distributed throughout the eastern half of the United States, it is a very slow-growing species, and most trees harvested tend to be fairly small in diameter. Because of this, aromatic red cedar boards tend to be knotty and narrow.
In rustic or knotty grades of lumber, there will be a percentage of degrade during the milling process. Some knots may shake lose and/or fall out during the milling process. Mason’s Mill is not liable for these defects in moldings produced from knotty grades of lumber.
Mason’s Mill and Lumber will not be responsible or issue a credit for any cup, warp, twist or splitting that occurs in any custom cut Fir or Cedar boards or beams. These issues can be present in material cut from larger beams and timbers and need to be accounted for by the buyer when determining if Fir or Cedar is appropriate for the intended application. Cedar and Fir products will typically have knots.
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Interior & Exterior Applications
Tongue and groove wood is used across a variety of residential and commercial projects. The right species, profile, and finish will depend on the location and intended use.
Interior Walls & Ceilings
Create warm, continuous wood surfaces for living areas, offices, and architectural accents.
Porches & Covered Outdoor Areas
Bring natural wood character to covered ceilings and other protected outdoor spaces.
Exterior Siding & Cladding
Use exterior-rated tongue and groove materials for architectural siding and cladding applications.
Soffits & Architectural Details
Add consistent wood detailing to roof overhangs, entryways, and architectural features.
Custom Milling& Finishing Options
Every project has different requirements, and standard profiles may not always be the right fit.
Mason’s Mill offers custom milling services for tongue and groove wood in select species, dimensions, and profiles. Our Mill Applied Finishes service also provides finishing options to help prepare materials before delivery.
Share your project specifications with our team, and we can help determine the available options.
Frequently Asked Questions
Tongue and groove boards connect through a tongue on one edge and a matching groove on the other. Shiplap boards use overlapping rabbeted edges. Both can be used for walls, ceilings, and select exterior applications, but they create different joint details.
Yes. Tongue and groove can be used for exterior applications when the wood species, profile, and finishing system are suitable for the intended exposure. Thermally modified wood is one option for exterior siding and cladding.
Mason’s Mill offers options including Southern Yellow Pine and select thermally modified species such as Ash, Spruce, and Pine. Availability varies by profile and product.
Yes. Many tongue and groove products can be painted, stained, or finished with a clear coating. The appropriate finish depends on the wood species, exposure conditions, and desired appearance.
Yes. Our custom millwork team can produce select tongue and groove profiles based on project specifications, wood species, and dimensions.
Yes. Samples are available for select tongue and groove products through our online Sample Shop, allowing you to review the material before placing a larger order.
Find the Right Tongue & Groove Wood for Your Project
Whether you’re working on an interior ceiling, exterior cladding, or a custom architectural detail, Mason’s Mill & Lumber can help you explore available wood species, profiles, and finishing options. Contact our team to discuss your project or request a quote below.