Luxury Vinyl Tile (LVT) flooring is known for its durability, versatility, and ability to replicate the aesthetics of natural materials such as wood and stone with remarkable fidelity. However, the success of an LVT installation significantly hinges on the condition of the subfloor. The smoothness of the subfloor is a critical factor that can affect the longevity, appearance, and performance of LVT flooring. This article delves into the requisite smoothness for a subfloor prior to LVT installation, offering insights to ensure a successful flooring project.
Understanding Subfloor Requirements
The subfloor is the foundation for any flooring installation, and its condition is important when laying LVT. For LVT, the subfloor must not only be stable and structurally sound but also as smooth as possible. Imperfections such as bumps, gaps, or dips can telegraph through the LVT, leading to an uneven surface that is not only aesthetically displeasing but can also cause wear and tear over time.
The Standard for Smoothness
The British Standards Institute provides guidelines for flooring installations, including the preparation of subfloors. While specific numbers can vary depending on the manufacturer’s recommendations, a general rule of thumb is that the surface should have no more than 3mm of variation over a 2-metre span. This level of smoothness ensures that any imperfections are minimal and unlikely to affect the LVT adversely.
Preparing the Subfloor
Achieving the necessary smoothness for an LVT installation involves several steps, depending on the current condition of the subfloor:
Inspection and Repairs: Begin with a thorough inspection of the subfloor. Look for cracks, holes, or any signs of moisture damage. These issues must be addressed before proceeding. Cracks and holes can be filled with a suitable floor patching compound, while moisture issues may require more extensive remediation.
Levelling: For concrete subfloors, levelling compounds can be used to fill in low spots and create a smooth surface. Wooden subfloors may require sanding to remove high spots or the addition of plywood to level out the floor.
Cleaning: Once repairs and levelling are complete, the subfloor should be cleaned thoroughly. Remove all dust, debris, and any substances that could interfere with the adhesion of the LVT.
The Importance of Moisture Testing
In addition to smoothness, the moisture content of the subfloor is a critical consideration. Excessive moisture can cause LVT to warp or detach from the subfloor. Conducting a moisture test is a crucial step before installation. The acceptable moisture levels will depend on the LVT manufacturer’s specifications, but as a general guideline, a moisture reading of less than 75% relative humidity (RH) is often required for concrete subfloors.
The preparation of the subfloor is a pivotal step in the installation of LVT flooring. Ensuring that the subfloor is as smooth as necessary is not just about achieving a visually appealing finish; it’s about laying the groundwork for a durable, long-lasting floor. By adhering to the guidelines for subfloor smoothness and addressing any imperfections beforehand, homeowners and installers can avoid common pitfalls associated with LVT installation. Remember, the time and effort invested in preparing the subfloor will pay dividends in the performance and longevity of your LVT flooring. View our shop to see our wide selections of LVT flooring!