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
DeckWise® Deck Cleaner Parts 1/A & 2/B
Wood traps dirt, pollen and grime and when using exotic hardwood lumber it pays to maintain it. The Part 1 cleaner eliminates mildew, dirt, mold and stubborn stains. It also removes graying and reconditions Ipe, Tigerwood, Cumaru, Redwood, Cedar decking and outdoor wooden furniture or hardwood siding. Rejuvenate the rich color and distinct wood grain patterns and restore the all-natural lavish color before properly refinishing. The concentrated powders are developed to clean external hardwood decks, fences, hardwood siding, wood railings, benches, chairs and other outside wooden objects.
The Cleaner Part 1 is an oxygen rich wood cleaner that contains no bleach. When you follow the instructions on the Deck and Wood Cleaner label, the product is safe to use and will not damage wood, vegetation or lawn and is bio-degradable. Do not use a power washer on hardwood lumber which could leave scars and raise the wood grain. Always scrub with a non-metal brush. Wood cleansers can easily increase the pH level of lumber. Always follow cleaning with the DeckWise® Deck and Wood Brightener Part 2.
DeckWise® Deck Cleaner & Brightener Part 2 restores the pH level back a neutral state. It also removes tough rust and tannin stains caused by leaves, as well as mold and fungi stains while brightening the hardwood for finishing. It is recommended for use on most species of hardwood, including Redwood, Ipe, Cedar, Cumaru, Tigerwood and thermally modified softwoods. Brighten and restore the all-natural allure of outdoor wooden decking and rainscreen wood siding, outdoor furniture, hardwood fences, wood railings and steps. The goal of our product is to prepare the wood after cleaning and to eliminate the caustic affect from the Cleaner. The Brightener Part 2 is an oxygen-rich formula that contains the ingredient Oxalic Acid. It is a pH neutralizer and will re-establish the pH level to the wood.
Once the wood pH is neutral, the wood is ready to accept your choice of stain or oil finish more evenly and will certainly improve the beauty of the wood. We recommend our Ipe Oil Hardwood Oil Finish. The brightener also prepares new wood by stripping mill glaze. It can be used to eliminate rusty areas on concrete, brick and masonry as well. The Brightener Part 2 is a powder concentrate offered in 16 oz. jars. Mix at a 4:1 ratio with warm water. For tougher jobs, you may require several applications or a more powerful mixture.
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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.