IPG Spas thermal retention system consists of multi-layered moisture-resistant thermal insulating ROXUL individually wrapped in a GreenGuard envelope. ROXUL® is a mineral wool that is a naturally occurring byproduct of volcanic activity in the Hawaiian islands. Our GreenGuard enveloped insulation allows for quick and easy access to the spa plumbing and components should servicing be necessary and eliminating the traditional blown-in foam insulation that was costly to replace during servicing. An additional layer of insulation is fastened directly to the cabinet interior itself retaining any heated created by pump operation. This system leaves your spa wrapped in a blanket of insulation, maintaining the highest R-value and reducing energy consumption.

 
 

ROXUL® is made from balsat and over 40% recycled slag and has been tested and approved to GreenGuard Certification.
 

 

ROXUL® does not absorb water or hold moisture so its R-value is not compromised like traditional "pink" insulation.
 

 

As an added bonus ROXUL® has sound dampening qualities so you can enjoy the ambient sounds created by the spa water swirling around. ROXUL® can reduce the intensity and propagation of noise.
 

 

Highly fire resistant and impervious to insects and rodents this recycled product is environmentally friendly. ROXUL® does not contribute either to the development and spread of fire or the release of toxic gases.