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What Is Tongue and Groove Flooring

Lowe's Editorial Team

By Lowe's Editorial Team
Published November 14, 2024

Choosing the right tongue and groove flooring for your home is not easy. Be it a traditional hardwood floor for your living room or a moisture-proof floor for your bathroom. Let's look at factors to consider when deciding on flooring that fits your space.

Tongue and Groove Flooring

Tongue and groove flooring refers to the method of fitting together wooden planks. These planks can be of different materials, like engineered wood or laminate flooring planks. Tongue and groove method helps to create a tight and seamless connection between the planks. It consists of a protruding edge on one side. The other side consists of a groove or a recessed edge. When installed, the tongue of one plank fits into the groove of the adjacent plank. It locks the flooring securely in place.

This interlocking system secures a smooth and gap-free surface. It makes the look and structural integrity of the floor much better. It’s mostly used for hardwood, engineered wood, as well as laminate flooring. Not only that, but it is easy to install and lasts for a long time.

Advantages and Disadvantages

Here are the pros and cons of installing tongue and groove flooring.

 A list of pros and cons of installing tongue and groove flooring.

Types of Tongue and Groove Flooring

There are different types of tongue and groove flooring based on how to install them. You can choose from the following types:

Nail Down

The nail down tongue and groove flooring are used for solid hardwood floors. The tongue side is secured to the subfloor plank using nails. This process ensures a long-lasting fit and reduces any shifting of floorboards. However, nailing each plank is time-consuming and requires more effort. You must also leave a small expansion gap around the perimeter. It will allow the natural wood to expand and contract without cracking.

Caution

Ensure the subfloor is evenly leveled before installing nail down tongue and groove flooring. An uneven subfloor can lead to squeaky floors.

Glue Down

If you plan to install flooring over concrete, opt for a glue down tongue and groove flooring. You may also install it over radiant heating systems. This type of flooring uses adhesive to glue the tongue and groove planks directly to the subfloor. The process can be messy and require more precision because improper application can affect the floor’s finish. You must remember to apply the correct amount of glue evenly across the planks. Otherwise, the excess glue can seep into the gaps and create a mess. 

Tip

Use spacers when installing glue down tongue and groove flooring. They will maintain a comfortable gap between the planks to allow the expansion of wood.

Staple Down

Staple down tongue and groove flooring is common for engineered wood. A stapler is used to fasten the tongue of flooring boards to the subfloor. It is much easier, affordable and faster to install this type of tongue and groove flooring. However, the staples can loosen with time and lead to squeaky floors. You must use good quality hardwood flooring staples for a long-lasting installation. Consider staples with a chisel point and a coated finish that increases holding power.

Caution

Refer to the manufacturer’s instructions and use the correct size of staples with staple down tongue and groove flooring.

Interlocking

The interlocking tongue and groove flooring does not require any type of adhesives, nails or staples. The planks are designed to be simply snapped together. It can be installed over almost any type of subfloor, including concrete, plywood, or existing flooring. It is also much easier to remove and replace than other types of tongue and groove flooring. 

Tip

Install scratch resistant and stain-resistant tongue and groove flooring to reduce maintenance.

Materials of Tongue and Groove Flooring

You can also choose tongue and groove flooring based on different materials. The popular materials include hardwood, engineered, laminate or vinyl tongue and groove flooring.

Hardwood Flooring

Hardwood flooring is a popular choice. If you want a timeless and long-lasting option this is the one to go for. They are made from solid wood like oak, maple or cherry. This flooring adds a classic look to every space.

Each plank has grooves on one side and tongues on the other. When you install them, the planks interlock without any problem. These floors are known for how long they last. They often need more investments. But, since you can sand and refinish them, it makes it worth every penny. This flooring is more sensitive to dampness. So it's best to use them in areas with stable humidity levels.

Engineered Flooring

Engineered wood flooring includes a thin top layer made of hardwood. The base is often made of high-quality fiberboard. This flooring is more immune to water and temperature changes.

Engineered wood flooring has a semi-solid build. These are ideal to use in kitchens or basements. They are a great choice to use in areas that have dampness and moistness.

This type of flooring can also be installed in many ways like floating, glue-down or nail-down methods. It is also a cost-effective way to provide a natural wooden look to your floor.

Laminate Flooring

This type of flooring gives an attractive look. It has the look of natural materials like wood or stone. Kept under high heat and pressure, these are made of dense wood fibers.

The top layer of most of this type of flooring is made of melamine resin. It fights wear and tear. It's ideal to use in areas with more footfall, like an entryway or kitchen. The interlocking design is easy to install. You can choose from a wide range of styles and finishes to suit your style.

Vinyl Flooring

This type of flooring is made with layers of vinyl and other compounds. It is a waterproof option and is best for damp areas. It can be installed in basements, bathrooms and kitchens. Vinyl flooring is usually made from synthetic materials. It comes in planks, tiles and sheets. It is a durable and cost-effective choice. Also, this flooring has a click and lock system. It is easy to install. They fight scratches, dents and stains.

Bamboo Flooring

This type of flooring has a modern appeal to it. Bamboo is a stylish flooring option but it is sensitive to moisture. It should be installed in areas with less humidity. Bamboo flooring gives a look and feel that is similar to hardwood.

Strand woven bamboo is thicker. It is more immune to wear than regular bamboo. They are mostly used in hallways and living spaces. They are more long lasting than Oak flooring.

Choosing The Right Tongue and Groove Flooring

Choosing the right flooring is critical. Here’s a step-by-step guide to help you make the best decision:

Assess the Room's Environment

Think about the moisture levels of the room where you will install the flooring. Vinyl or engineered flooring fights dampness. It is best for the kitchen, bathroom or basement. Bamboo, hardwood and laminate flooring are best for living rooms, bedrooms or hallways.

Consider Durability Needs

Think about the level of wear and tear your flooring will face. If you have pets, kids or high foot traffic, get materials like laminate. It will last longer. Engineered wood also fights wear and tear. For rooms with less footfall, choose hardwood or bamboo flooring.

Set a Budget

Fix the cost of installing your flooring. Before you decide which one to buy, balance quality and price. Hardwood and bamboo floors cost more, but they are quite long-lasting. You can go for laminate and vinyl flooring as well. They are one of the affordable choices.

Think About Installation Requirements

All tongue and groove flooring have a similar interlocking mechanism. But their installation processes can vary based on the material.  Go for laminate or vinyl. These are easy to install because of the click and lock system. Hardwood and bamboo need more precision. You might need help as well. This can increase the overall cost of the project. 

Maintenance Needs

Think about how much upkeep it demands. If you are ready for less stress, go for vinyl or laminate flooring.

Hard wood floors need more attention. It needs regular refinishing. However, their long-term beauty can make it worthwhile.

Things to Consider When Selecting Tongue or Groove Flooring

Here are some factors you can consider when selecting tongue and groove flooring.

  • Material type: Choose hardwood for a classic look. Engineered wood is ideal for damp areas. Laminate is great for areas with high footfall. Vinyl is perfect for wet areas. Bamboo is an eco-friendly option that also lasts long.
  • Moisture resistance: Go for vinyl for bathrooms and kitchens. They are waterproof. Avoid hardwood and bamboo at all costs. They are prone to warping. Laminate can tolerate some moisture. But it is not ideal for wet climates. 
  • Installation method: The installation process is almost the same. But, because of the click and lock system laminate or vinyl is easier to install if you want to do it yourself. Engineered wood needs more skill. With hardwood and bamboo, you will need experts’ help. 
  • Durability and wear: Vinyl lasts around 25 years. Laminate can last anywhere between 15 to 25 years. They are good for areas with high foot traffic. 3mm or 4mm flooring of engineered wood can last anywhere between 20 to 30 years. It offers solid durability. Hardwood may scratch and dent more easily. Bamboo is durable but less resistant to wear and tear.
  • Maintenance requirements: Vinyl and laminate require minimal maintenance, ideal for busy homes. Engineered wood needs less upkeep than solid hardwood but more than laminate. Hardwood and bamboo require regular refinishing and careful cleaning to maintain their appearance and longevity. 

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