If you’re planning to install vinyl flooring over plywood subfloor, you’re likely wondering whether underlayment is truly necessary. After all, plywood provides a sturdy base, and vinyl flooring is typically sold with built-in cushioning. So, is underlayment necessary, or is it just an added expense? Let’s delve into this question, exploring the benefits of underlayment and when it’s really required.
Understanding plywood and vinyl flooring first is crucial. Plywood is a strong, versatile material, but it may not be perfectly flat or smooth, especially if it’s been exposed to moisture or temperature changes. Vinyl flooring, while durable and water-resistant, can be sensitive to minor subfloor imperfections. This is where underlayment comes into play.
What is Underlayment and Its Role in Vinyl Flooring Installation?
Underlayment is a material placed between the subfloor and the finished floor. It serves several purposes, including adding cushioned support, soundproofing, and protecting the flooring from minor subfloor issues. In the case of vinyl flooring, underlayment can also help prevent buckling or tearing due to minor subfloor movements.
Underlayment options vary, but for vinyl flooring, you’ll often see foam/rubber combinations, cork, or recycled felt materials. Some underlayment products also include incorporated vapor barriers, which can help prevent moisture damage to both your flooring and subfloor.
Underlayment for Vinyl Plank Flooring
Many vinyl plank flooring products tout built-in underlayment, which means you can install them directly over a prepared plywood subfloor without additional underlayment. However, this doesn’t always mean you won’t need it. The key word here is “prepared.” A well-prepared plywood subfloor is flat, clean, dry, and secure. If your plywood isn’t meeting these standards, underlayment can help bridge the gap.
Consider using underlayment if your plywood subfloor is slightly uneven, has minor loose screws or nails, or shows signs of moisture damage. In these cases, underlayment can provide a smoother, more stable surface for your vinyl planks.
Underlayment for Luxury Vinyl Tile (LVT) Flooring
Luxury vinyl tiles (LVT), often referred to as luxury vinyl plank (LVP), are typically thinner and more rigid than vinyl plank flooring. As such, they often require a perfectly flat and smooth surface. In many cases, a thin foam underlayment is recommended. This type of underlayment can help fill in minor gaps, provide additional cushioning, and improve soundproofing.
If your plywood subfloor isn’t perfectly flat, consider using a self-leveling compound before installing the underlayment. This can help ensure a consistent, even surface for your LVT.
Final Thoughts: When to Opt for Underlayment with Vinyl Flooring on Plywood
While underlayment isn’t always required when installing vinyl flooring over plywood, it’s a crucial factor to consider. Assess your plywood subfloor carefully, taking note of any imperfections. If you’re unsure, it’s always better to err on the side of caution and use underlayment. The small additional cost can save you from potential flooring failures or repairs down the line.
Moreover, underlayment can enhance the comfort, soundproofing, and overall feel of your vinyl flooring. So, even if your plywood is in excellent condition, underlayment can still provide added benefits. When in doubt, consult with a professional flooring installer or the flooring manufacturer for tailored advice.
