When it comes to home or commercial space renovation, the question of whether new PVC flooring can be installed directly on existing PVC floors often arises. Many people may consider the convenience of directly laying new PVC flooring over the old one to save time and effort. However, the ideal approach is usually to remove the original PVC flooring, and here's why.​

The Potential Risks of Direct Installation​

Adhesive and Bonding Issues​

The adhesive used in PVC flooring installation plays a vital role in ensuring its stability. As the original PVC floor ages, the adhesive that has been in place for a long time may degrade. Over years of use, factors such as temperature changes, moisture exposure, and regular foot traffic can cause the adhesive to lose its stickiness. When new PVC flooring is installed directly on top of an old, deteriorating adhesive layer, there is a significant risk that both the old and new floors may start to peel or come loose.​

This adhesive failure can lead to uneven surfaces, which not only affect the aesthetic appeal of the floor but also pose a tripping hazard. For example, in a busy commercial environment like a retail store or office, where there is constant movement, an uneven floor due to adhesive issues can be extremely dangerous for employees and customers.​

Compatibility and Flatness Problems​

Another crucial aspect is the compatibility between the old and new PVC floors. The existing PVC flooring may have warped, cracked, or developed uneven spots over time. Installing new PVC flooring directly on such a surface will not correct these imperfections. Instead, these irregularities will be transferred to the new floor, resulting in a subpar installation.​

Moreover, different types of PVC flooring may have varying thicknesses, textures, and expansion/contraction rates. If new PVC flooring is laid directly on old PVC without proper consideration of these factors, it can lead to issues such as buckling or gaps forming in the new floor as it expands and contracts with changes in temperature and humidity.​

The Necessity of Removing the Original PVC Flooring​

Ensuring a Solid Foundation​

Removing the original PVC flooring allows for a proper inspection of the subfloor. The subfloor is the base upon which the flooring is installed, and its condition is critical for the success of the new installation. By getting rid of the old PVC, any damage or irregularities on the subfloor, such as rot, moisture damage, or unevenness, can be identified and addressed before the new PVC flooring is laid.​

For instance, if there is hidden moisture damage under the old PVC flooring, installing new flooring directly on top will only exacerbate the problem. Fixing the subfloor issues first ensures that the new PVC flooring has a stable and flat surface to adhere to, greatly enhancing its durability and longevity.​

Better Adhesion and Long - term Performance​

Once the old PVC flooring is removed, the subfloor can be properly prepared for the new installation. This preparation may include cleaning, leveling, and applying a fresh layer of adhesive. A clean and smooth subfloor provides an optimal surface for the new PVC flooring's adhesive to bond effectively.​

With a proper adhesive bond, the new PVC flooring will be less likely to experience issues like peeling or shifting. This not only guarantees a more professional - looking finish but also ensures that the floor can withstand the rigors of daily use for an extended period. Whether it's in a residential home with family activities or a commercial space with heavy equipment and high - volume foot traffic, a well - installed PVC floor on a properly prepared subfloor will perform better and last longer.​

Special Circumstances and Exceptions​

In some rare cases, it may be possible to install new PVC flooring directly on existing PVC floors, but this requires strict conditions. For example, if the original PVC flooring is relatively new, in excellent condition, and perfectly flat, and the new PVC flooring is of a type that is specifically designed for over - installation, then direct installation might be considered. However, even in such cases, it is highly recommended to consult with a professional flooring installer.​

A professional can assess the specific situation, check for any hidden issues, and determine the best course of action. They have the expertise and experience to ensure that the installation process is carried out correctly, minimizing the risk of future problems.​

In conclusion, while the idea of directly installing new PVC flooring on existing PVC floors may seem appealing for its convenience, it is generally not the best choice. Removing the original PVC flooring is the ideal approach to guarantee a high - quality, long - lasting installation. By taking the time to properly prepare the subfloor and install the new flooring, you can enjoy a beautiful, functional, and durable PVC floor that meets your needs for years to come.