Our 15+ years of experience in the automotive industry and history of automotive lab testing indicate that the adhesion properties and acoustic properties of these materials available are inferior. The materials are: difficult to conform to contoured surfaces, require solvent cleaning/washing of the surface before installation, require heating of the material and surface during installation, market feedback indicates that some even fall off in cold weather! Time consuming and difficult to handle during installation back to top ^ How can I treat higher temperature hot spots on my car? Answer: There are several areas on a vehicle interior that experience above average temperatures. The front of dash, the tunnel, near the header, above the exhaust to name a few. HushMat Ultra Custom comes in dimensions that offer excellent thermal properties. The thicker viscoelastic layer and thicker foil laminate provide an excellent treatment for these difficult application areas. Call or e-mail us and