CertainTeed Learning Center: Insulation « return to the Learning Center


Insulation Fundamentals: Advantages of Fiber Glass

Fiber glass insulation is available comes in a variety of lengths and widths, faced or unfaced.

Fiber glass is the preferred insulation material by builders and homeowners. It is inorganic, naturally noncombustible and will not retain water nor deteriorate or lose its insulating power over time. Fiber glass is also:
  • an excellent absorber of sound
  • proven in third-party tests performed by the NAHB Research Center for assuring thermal performance
  • safe when installed properly
  • Low cost
  • Noncorrosive
  • Won’t settle over time
  • Lightweight
  • Easy to handle and install
  • Many CertainTeed products are GREENGUARD® Children & Schools Certified for superior indoor air quality (IAQ) performance 
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