Waterproofing Laminate Floor Joints: The Key to a Durable and Long-Lasting Floor

  • Alisanne Fournier
  • Jun 05, 2022
Waterproofing Laminate Floor Joints: The Key to a Durable and Long-Lasting Floor

When it comes to flooring, laminate is a popular choice among homeowners and designers alike. It’s affordable, easy to install, and comes in a variety of styles and designs. However, one of the biggest challenges with laminate flooring is making sure that the joints are properly sealed and waterproofed. If water seeps into the joints, it can cause the laminate to warp, buckle, or even rot over time. That’s why waterproofing laminate floor joints is crucial to maintaining the integrity and longevity of your floor.

In this article, we’ll explore the different methods and products used to waterproof laminate floor joints. We’ll also discuss the benefits of waterproofing and how it can save you time, money, and headaches down the line.

Why Waterproofing Laminate Floor Joints is Important

As mentioned earlier, laminate floors are vulnerable to moisture damage if the joints are not properly sealed. Water can seep into the gaps between the planks, causing them to swell or warp. This can lead to unsightly gaps, uneven surfaces, and a weakened structure. In some cases, the damage may be irreparable and require a complete replacement of the floor.

Aside from aesthetic concerns, moisture can also pose health risks. Wet floors can become breeding grounds for mold and mildew, which can trigger respiratory problems and allergies. Furthermore, standing water can create slip and fall hazards, especially for children and elderly individuals.

Methods of Waterproofing Laminate Floor Joints

Fortunately, there are several ways to waterproof laminate floor joints. Here are some of the most common methods:

Sealing Tape

Sealing tape is a type of adhesive tape that is applied to the joints before the planks are clicked together. It creates a waterproof barrier that prevents water from seeping into the gaps. Sealing tape is easy to install and can be cut to fit around corners and curves. However, it may not be as durable as other methods and may need to be replaced over time.

Sealing Compound

Sealing compound is a type of glue that is applied to the joints after the planks are clicked together. It fills in the gaps and creates a tight seal that prevents water from penetrating the surface. Sealing compound is more durable than sealing tape and can withstand heavy foot traffic and moisture exposure. However, it may be more difficult to apply and may require professional installation.

Waterproof Underlayment

Waterproof underlayment is a layer of material that is installed between the subfloor and the laminate planks. It acts as a moisture barrier and prevents water from seeping through the joints. Waterproof underlayment can be made of various materials, such as foam, rubber, or cork. It provides added insulation and soundproofing benefits as well. However, it may be more expensive than other methods and may require additional installation time.

Benefits of Waterproofing Laminate Floor Joints

Waterproofing laminate floor joints offers several benefits, including:

  • Preventing moisture damage and extending the life of your floor
  • Reducing the risk of mold and mildew growth
  • Improving indoor air quality and reducing allergy triggers
  • Creating a safer and more slip-resistant surface
  • Enhancing the overall aesthetic appeal of your space


Waterproofing laminate floor joints is an essential step in ensuring the durability and longevity of your floor. Whether you choose to use sealing tape, sealing compound, or waterproof underlayment, it’s important to invest in a high-quality product and follow the manufacturer’s instructions for installation. By taking the time to waterproof your laminate floor joints, you can enjoy a beautiful, safe, and long-lasting floor for years to come.

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