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The Difference Between Lap Boards and Tongue-and-Groove Wood Paneling

What’s new about these once-outdated wood paneling styles? Essentially, it’s all about how it’s presented. Using a variety of methods can breathe new life into this look.

First, lap and tongue-and-groove boards are often painted white or in a brighter color than the average wood grain. More than just chair rails and wall accents, these boards create a barn-like, pastoral feel that makes a space come alive.

Second, they can be used for more creative applications. Not only can these boards be used for half walls in a bathroom, but they can also be used for the entire ceiling of an open living space.

Finally, and this is where the once-outdated panels really get a refresh, they’re often laid horizontally. For example, you might see a modern farmhouse kitchen with a focal wall of horizontal lap boards behind a rustic farmhouse table, or a focal wall of horizontal lap boards next to the bookshelves in a home library with a rolling library ladder.

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I. Lap vs. tongue-and-groove wood paneling: which one do you choose?

01-Shiplap and Tongue and Groove

From the outside, lap and tongue-and-groove wood paneling look very similar. Once installed, they look very similar, which is why many people confuse the two materials. However, beneath the surface, there are significant differences between them. Examine every profiled edge of either type of panel and you will see the difference.

Property
Tongue and groove wood panels
Lap planks
Conclusion
Appearance
Tongue and groove paneling has a corresponding double profile system. On one side of the length, there is a small T-shaped protrusion in the middle, while on the other side there is a U-shaped notch, which looks more compact and neater than lap joint panels. Along the edge of the lap board, it has a small L-shaped groove in its profile, each L-shaped groove will support the next board. It has a slight bevel on the edge, providing a softer and rounded appearance. Everyone has different preferences and makes different choices.
Easy installation
The mortise has two notches and you need to be precise, driving the nail straight through the tongue to ensure it is the most secure. The lapped planks simply slide into place and once assembled, nails are driven straight through the lapped joints. Lap boards are more convenient.
Material
Wood is most commonly made from lap and tongue-and-groove boards. If your project involves renovation or paint work, then inexpensive pine boards and plywood are affordable options. You can also choose a higher quality wood, such as western red cedar. Same
Climate factors (humid areas)
Tongue and groove boards tend to absorb moisture and trap it within each interlocking edge. This trapped moisture can eat away at and weaken the panels, causing them to fail. If you live in a rainy area, such as the Pacific Northwest, lap decking is the way to go. It’s simple and clean, with overlapping L-shaped profiles that allow for easier drainage. Overlapping wooden boards has more advantages.
Climate factors (dry areas)
Dry air can cause the wood to shrink slightly, which can lead to gaps in tongue-and-groove wood paneling. For homes located in areas with high temperatures and low humidity, shiplap panels will not be as noticeable due to their overlapping structure. Overlapping wooden boards has more advantages.
Thermal insulation performance
If you live in a colder climate, like the Northeast, where you might see several feet of snow each winter, then tongue and groove board is the board for you! Not only will it keep your house warmer, but it will also save you money on your monthly energy bills during the winter months. Tongue and groove boards have more advantages.
Vertical vs. Horizontal applications and design
Because tongue and groove provide better insulation from the elements, they can be installed vertically or horizontally. Panel designs installed horizontally along the wall can make the paneling appear longer. Lap panels must be installed correctly to prevent warping and leaks in wet areas or climates. Consider hiring a professional contractor to properly install the lap panels. Tongue and groove boards have more advantages.
Style
Tongue and groove wood paneling often has a more refined aesthetic and may be a good fit for more modern design tastes. The shiplap aesthetic lends itself well to a rustic or elevated farmhouse style, giving off a relaxed, casual vibe. Choose according to personal preference.
Affordability
Tongue-and-groove wood paneling will stand the test of time better than shiplap and require less repairs over the years. Shiplap is relatively inexpensive due to its construction and neater installation. But it all depends on the material and the size of the room or project. Depends on the type of wood you choose.

II. Conclusion: How do I make the final decision on shiplap vs tongue and groove?

To decide whether to use shiplap or tongue and groove, you should evaluate which factors are ultimately most important to you. If you like the residential look of shiplap, need to save money in the short term, and are perfectly happy with the look of the gaps in your walls, then shiplap is for you.

However, if you dream of a more modern, sophisticated wall, are willing to make a long-term investment, and are okay with a slightly more complicated installation process, we recommend tongue and groove wood paneling.

Ultimately, each wood paneling style has its advantages and benefits, but it’s up to you to decide. Whichever style you choose, happy renovation project!

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Both lap and tongue-and-groove boards have their advantages and benefits, and whichever you choose, I wish you good luck with your renovation project!

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