Which underlayment should I choose for my LVT or laminate floor?
The underlayment may not be the most exciting part of a new floor, but it’s one of the most important. It affects sound, warmth, comfort, and even the lifespan of your floor.
The role of an underlayment
When you walk across a room, you can immediately feel whether the underlayment is right. A stable subfloor keeps the floor lying flat and prevents movement. Footsteps sound softer, the room resonates less, and heat from underfloor heating is distributed evenly. The underlayment forms the foundation on which the rest of the home depends. Without a proper base, the floor is more likely to shift, creak, or lose comfort.
Underlayment for LVT: Different situations, different solutions
Different types of LVT perform differently:
Click LVT requires a firm subfloor that can absorb minor imperfections and support the click joints, keeping the floor stable and making it quieter underfoot.
Dryback LVT is glued directly to the subfloor, so the floor is fully fixed and doesn’t need an additional underlayment, but it still requires a smooth, even base. A leveling layer ensures the floor lies flat and doesn’t show the contours of the subfloor, providing the most seamless and quiet experience.
Some floors come with an integrated cork or foam underlayer, which dampens sound and adds comfort, but still needs a stable base underneath. This combination makes the floor extra quiet and comfortable, especially in apartments.
Underlayment for laminate
Laminate is installed as a floating floor on top of the underlayment, which affects how it responds to impact noise and temperature. An underlayment with sound-dampening properties makes the floor quieter, especially in areas with heavy foot traffic or where furniture is frequently moved.
In homes with underfloor heating, a heat-conductive underlayment works best. It distributes heat more evenly and makes the floor feel less cold when you step on it.
You notice the difference immediately when walking. The floor sounds fuller and less harsh. The room feels calmer because sound doesn’t bounce around as much.
The 10 dB rule and HOA requirements
In apartments, the 10 dB rule often applies. The underlayment must noticeably reduce impact noise for the neighbors below. Many underlayments are tested according to this standard. A suitable underlayment ensures the floor meets the HOA’s requirements.
LVT with a certified underlayment or LVT with integrated sound insulation often performs excellently. Laminate can achieve this too, but it requires a specific type of underlayment that effectively dampens sound. You won’t see the difference, but the neighbors will hear it.
Common mistakes when choosing an underlayment
Choosing an underlayment may seem simple, but in practice, many things can go wrong:
- A subfloor that isn’t level enough can cause the floor to move later on.
- An underlayment that’s too springy can eventually create movement in joints or seams.
- Selecting the wrong type of underlayment for underfloor heating can actually block heat, making the room warm up more slowly.
- Acoustic standards are also sometimes underestimated. An underlayment without certification may seem suitable, but often doesn’t meet the requirements for apartment buildings.
That’s why the real assurance comes from testing, not appearance.
