In recent years, SPC flooring has rapidly become one of the most popular choices for both residential and commercial interiors, thanks to its durability, waterproof performance, and easy installation. However, as flooring systems continue to evolve, one key component is drawing increasing attention—sound insulation underlayments.
In modern living and working environments, noise control is an essential part of comfort and quality of life. Footsteps, furniture movement, and impact noise can easily transmit through rigid flooring structures. To address this issue, sound insulation underlayments are applied beneath SPC flooring, serving as a critical layer that reduces sound transmission and enhances the overall acoustic performance of a space.
The underlayment acts as a cushioning buffer between the SPC plank and the subfloor. By absorbing and dispersing impact energy, it minimizes impact sound (IIC) and airborne noise (STC) levels. The effectiveness of this layer depends on its material composition, thickness, and density. Common materials include IXPE (Irradiated Cross-linked Polyethylene Foam), EVA (Ethylene Vinyl Acetate), and rubber-based underlays—each offering different performance characteristics in sound absorption, elasticity, and moisture resistance.
IXPE Underlayment – Lightweight, closed-cell foam with excellent sound reduction and waterproof features. It’s widely used in pre-attached SPC flooring.
EVA Underlayment – Known for its elasticity and moderate sound absorption, suitable for both residential and light commercial use.
Rubber Underlayment – Provides superior acoustic control and durability, ideal for multi-story buildings or heavy-traffic commercial projects.
Many SPC flooring manufacturers now offer pre-attached underlayments, simplifying installation and ensuring consistent performance. This “2-in-1 structure” not only improves sound insulation but also enhances comfort underfoot and thermal efficiency. Moreover, it helps bridge minor subfloor irregularities, improving the overall installation quality.
Sound insulation performance is often evaluated through standardized testing such as IIC (Impact Insulation Class) and STC (Sound Transmission Class) ratings. High-quality SPC flooring with integrated underlayment typically achieves IIC ratings above 70, meeting the requirements for apartments, offices, and hospitality environments.
While SPC flooring is already renowned for its resilience and aesthetic appeal, the sound insulation underlayment plays a silent yet powerful role in elevating the user experience. As consumers and builders increasingly prioritize acoustic comfort, choosing SPC flooring with the right underlayment has become an essential consideration in modern flooring design.
Whether it’s a high-rise apartment, a hotel suite, or a retail showroom, sound insulation underlayments ensure that SPC flooring not only looks good but also performs quietly—bringing true comfort to every step.
