SEkisUi s-lec™

Sound Acoustic PVB

The feeling of home and comfort are in high demand for building integration, including structures by busy roads, near airports, or in urban areas with heavy traffic. Sekisui has successfully developed S-LEC™ Sound Acoustic Interlayer for sound control design in architecture.


By dramatically increasing sound insulation performance, building occupants are shielded from the noise of the outside world for greater comfort. This film has been well received for architectural use in housing, offices, schools, and commercial facilities.


S-LEC™ Sound Acoustic Interlayer is constructed from a patented three-layer extrusion technology. The outer layers provide mechanical strength and enable adhesion to the glass. The inner layer absorbs unwanted sound frequencies. With this technology, the sound insulation performance is improved, and still maintains the functionality of standard interlayer.


S-LEC™ Sound Acoustic Interlayer, with its special resin core, delivers significantly better sound attenuation than standard PVB. Commonly distracting noises and sounds occur in the 1,000 to 4,000 Hz range of the frequency spectrum. S-Lec™ Sound Acoustic Interlayer improves sound transmission loss within this range by 10dB compared to standard PVB interlayer.

S-LeC™ Sound Acoustic PVB

Used in Creative Applications:

Noise Reduction in the World Trade Center

Together with our glazing partners we provided S-LEC acoustic interlayer for laminated glass of the World Trade Center One. This enables extra safety and sound control, which is a remarkable comfort in buildings situated in noisy environments.

Sound Dampening Roof Glass

For the British Museum in London our standard and sound reducing S-LEC Sound Acoustic Interlayer is applied in the glass roof. The final result is an astonishing combination of daylight, safety and quietness for optimal enjoyment of one of world’s largest art collections.

Sound Dampening Outdoor Partitions

Glass noise barriers are placed beside roads to allow for a clear alternative to concrete walls. The glass barriers block noise while allowing a less restricted view and flow across the land. These panels are located in South-Limburg (The Netherlands) and span 21 kilometers.