The newest in a series of developments from Haartz, our acoustic topping materials dramatically enhance in-cabin comfort by reducing noise levels. Haartz has an acoustic topping material to cover all requirements.
Check out the acoustical data to see the difference.
Provides up to 2dB (noticeable) improvement over standard topping.
Acoustic topping materials include:
Provides up to 3dB (significant) improvement over standard topping.
High-Level acoustic topping materials include:
Sonnenland®, Stayfast® and Twillfast® are registered trademarks of The Haartz Corporation. 
