Expert Tips: Joining Two Hardwood Floors Between Rooms

To join two hardwood floors between rooms, you need to install a t-molding. This ensures a smooth transition and allows both floors to expand and contract without buckling or cracking.

When it comes to renovating a home, flooring is often one of the key areas where homeowners want to make a change. The possibilities are endless, from hardwood to tile to vinyl, and each option has its own benefits and drawbacks.

Hardwood flooring is a classic and elegant choice that can add value to your home, but it can also pose challenges when it comes to joining two rooms with different hardwood floors. Finding the right method for joining the two floors is crucial to ensuring a seamless and beautiful transition that will last for years to come. In this article, we will explore the process and benefits of joining two hardwood floors using a t-molding.

Types Of Hardwood Floor Joining

When joining two hardwood floors between rooms, there are three popular methods: tongue and groove joining, lap joining, and floating floor joining. Each of these methods comes with its benefits, and home improvement experts may have their preferences. In this section, we will discuss the features of each type.

Tongue And Groove Joining

Tongue and groove joining is the most standard method when merging two hardwood floors between rooms. This technique involves planks that have a tongue (a protruding edge) that fits into a groove (a corresponding recess) in the next plank. The main features of tongue and groove joining are:

  • Provides a secure and tight fit.
  • Less movement.
  • Easy gluing and nailing.
  • Takes less time to finish.
  • Preserves the floor’s aesthetic value.

Lap Joining

Lap joining hardwood floors involves a lapping board method, where one piece overlaps the other with a grooved profile facing up before joining it to another plank with a tongued profile. The significant benefits of lap joining hardwood floors are:

  • It creates an attractive design.
  • Expands and contracts in a gradual way resulting in less stress on the woods.
  • Very flexible so that it can be used on multiple styles.

Floating Floor Joining

Lastly, floating floor joining is a method where individual boards or planks connect with each other without the use of nails. These are glued to an underlayment or the subfloor. This method is popular in modern homes where people often prefer engineered hardwood.

The benefits of floating floor joining are:

  • Affordable with minimal installation costs.
  • Quieter walking than nailed floors.
  • Can be installed over any surface.
  • Easy to replace any single board if needed.

When selecting a method to join hardwood floors between rooms, the three types we’ve discussed, lap joining, tongue and groove joining, and floating floor joining are worth considering. Each provides uniqueness and has its benefits depending on the homeowner’s preference.

Factors To Consider Before Joining Two Hardwood Floors

Joining two hardwood floors between rooms is a popular choice for homeowners looking to create a seamless transition between rooms. However, before embarking on this type of flooring installation, there are a few factors you need to consider to ensure a successful outcome.

In this blog post, we’ll discuss the key factors to consider before joining two hardwood floors between rooms.

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Wood Type And Dimensions

One of the first factors to consider when joining two hardwood floors is the wood type and dimensions. It’s essential to choose wood species that are similar in hardness, density, and color, as this ensures an even transition between the two rooms.

Furthermore, the dimensions of the wood, such as the length and width, should be consistent to maintain the visual appeal of the flooring.

Consider using different patterns and laying techniques to create an elegant, upscale look, or choose a simple design to complement a more traditional aesthetic. Either way, be sure to consider the wood type and dimensions carefully before installing the flooring.

Subfloor Type

Another significant factor to consider is the subfloor type. Depending on the age and condition of your home, you may have different subfloor materials, such as concrete or plywood. It’s critical to ensure that the subfloor is level, flat, and in good condition to avoid future issues with the flooring.

Moreover, using a suitable underlayment or moisture barrier can protect against moisture and help level the subfloor. Different subfloor materials require different installation methods, and it’s important to follow manufacturer instructions and guidelines for optimal results.

Moisture Considerations

Moisture is an essential factor to consider before joining two hardwood floors. Hardwood flooring is a natural material that expands and contracts as it absorbs moisture from the air. Therefore, it’s important to ensure that the hardwood acclimates to the room’s moisture level before installation to prevent warping, buckling, or gaps in the flooring.

Employing an air humidity monitor to ensure that the room has consistent climatic conditions ensures a seamless and lasting transition between rooms. Environmental factors beyond your control, such as changes in temperature or humidity, can impact the flooring, so it’s essential to consider moisture as a critical factor when joining two hardwood floors.

Cost Considerations

Cost considerations are equally essential when joining two hardwood floors. Hardwood flooring installation can be expensive, and joining two floors can raise the cost even further. The cost of installation will depend on the wood type, size of the room, subfloor condition, and additional maintenance costs.

Hardwood flooring is an investment, and the quality and longevity of your flooring will significantly impact your bottom line. However, choosing hardwood flooring offers durability and aesthetic benefits, making it a sound investment in your home’s value.

Joining two hardwood floors between rooms requires careful consideration of several factors. Choosing consistent wood types and dimensions, ensuring a stable subfloor, managing moisture levels, and considering the cost of installation are key factors to ensure a successful outcome. By considering these key factors, you can create an elegant and seamless transition between rooms, adding value to your home and your quality of life.

Steps To Join Two Hardwood Floors Between Rooms

Steps To Prepare The Subfloor

Before joining hardwood floors, you must prepare the subfloor by following these steps:

  • Clean the surface of the subfloor to remove dirt, debris, or any other impurities.
  • Check the subfloor to ensure it is level and flat. Any unevenness can cause gaps or raised edges in the joined hardwood floors.
  • If the subfloor is uneven, use a self-leveling compound to make it even.
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Steps To Acclimate The Hardwood Planks

Acclimating the hardwood planks ensures they adjust to the room’s humidity and temperature. Here are the steps to acclimate the hardwood planks:

  • Place the hardwood planks in the room where you plan to join them for a minimum of 72 hours.
  • Make sure the room’s temperature is between 60-80°f and humidity is between 30-50%.
  • Stack the hardwood planks in the room by keeping them at least 4 inches off the ground. Ensure the planks are not stacked too tightly.

Steps To Measure And Trim The Planks

Joining two hardwood floors requires you to measure and trim the planks accurately. Here’s how to measure and trim the planks:

  • Use a measuring tape to measure the width of the joining area.
  • Cut the planks according to the measurements using a saw or a cutter.
  • Keep the cut end of the planks at the wall’s end, not the middle.

Steps To Join The Hardwood Planks

Once you have prepared, acclimated, and trimmed the planks, you’re ready to join them. Here are the steps to join the hardwood planks:

  • Apply glue on the edges of the planks that will join, and fit them together.
  • Use a tapping block to tap the planks and ensure they lock into place.
  • Use a pry bar to pull the planks together tightly.

Steps To Finish The Joined Hardwood Floors

After joining the hardwood floors, finish the installation by following these steps:

  • Use a sandpaper to smoothen the surfaces.
  • Buff the floors using a floor buffer machine.
  • Apply a sealant to protect the hardwood or stain it to give it the desired finish.

By following these steps, you can successfully join two hardwood floors between rooms.

Maintenance And Repair Of Joined Hardwood Floors

Joining hardwood floors between rooms is a great way to create a seamless transition and enhance the overall appearance of your space. Maintenance and repair of joined hardwood floors are therefore critical to ensure that they remain in good condition for years to come.

We will explore some regular cleaning tips, common issues and potential solutions, and additional maintenance tips to help you make the most of your hardwood floor.

Regular Cleaning Tips For Joined Hardwood Floors

Keeping your hardwood floors clean is crucial to extend their lifespan and prevent damage. Here are some tips for regular cleaning:

  • Use a soft-bristled broom, a dust mop or a vacuum with a bare floor attachment to remove grit, dirt, and other debris from the surface of your floor.
  • Wipe any spills or liquid immediately to prevent them from seeping into the hardwood floor or in between the seams.
  • Avoid using strong chemicals, abrasive cleaners, or steam cleaners as they can damage the finish or cause warping.
  • Use a microfiber mop damped with water or a hardwood floor cleaner designed for your type of flooring to remove dirt and grime from the surface.
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Common Issues With Joined Hardwood Floors And How To Fix Them

Even with regular cleaning and maintenance, joined hardwood floors can encounter issues that require repair. Here are some common issues and ways to fix them:

  • Separation between the seams: When hardwood floors dry out, they may contract, leading to gaps between the seams. To fix this issue, you can apply hardwood filler or use a colored wood putty to fill in the gaps. This will help the floors to expand and contract naturally with changes in humidity levels.
  • Cupping or buckling: Moisture is another enemy of hardwood floors as it can cause the planks to expand or buckle and twist. To fix cupping or buckling, you need to identify the source of moisture and address it before replacing the planks and restoring the levelness of the floor.
  • Scratches and dents: While hardwood floors are known for their durability, heavy foot traffic or moving furniture can scratch or dent the surface. To fix minor scratches, use a hardwood floor cleaner with a polish to buff out the scratch. For deeper scratches and dents, you can use a touch-up marker or replace the plank if the damage is extensive.

Additional Maintenance Tips For Long-Lasting Joined Hardwood Floors

Proper maintenance of joined hardwood floors requires more than just regular cleaning and repair. Here are some additional tips to help you maintain the longevity and beauty of your hardwood floors:

  • Use pads or coasters under furniture legs to distribute the weight evenly and prevent dents and scratches.
  • Trim your pets’ nails and avoid walking on the floor with shoes that can damage the surface.
  • Maintain a stable indoor temperature to prevent extreme humidity and temperature fluctuations that can cause damage to the hardwood.
  • Schedule regular professional cleaning and maintenance services to remove deep-seated dirt, restore the shine, and check for any underlying issues that may require repair.

Joining two hardwood floors between rooms can be a significant investment, and proper maintenance is key to making the most of your flooring. By following these tips, you can keep your joined hardwood floors in excellent condition, avoid costly repairs, and enjoy the beauty and warmth of this timeless flooring option.


After following the steps outlined in this guide, joining two hardwood floors between rooms can be a seamless and straightforward process. From measuring and preparing the surface, to selecting the right type of transition strip, to installing the new flooring, every step is crucial to achieving a flawless final result.

It is also important to remember that proper maintenance and care of the new flooring will help prolong its lifespan and keep it looking beautiful for years to come. Whether you are considering a DIY project or hiring a professional, having a solid understanding of the process will enable you to make informed decisions and ensure a successful outcome.

With a little bit of patience and attention to detail, you can achieve a stunning transition between two rooms and add value to your home.

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