Fiberglass Door Core Differences

Fib-R-Dor fiberglass doors are available with a variety of cores to suit your specific application.

End Grain Balsa – Provides superior strength, and is recognized as one of the most versatile core materials for sandwich construction. This closed cell material is non-absorptive, and extremely strong with an 11 lb. density rating. Balsa is also an environmentally friendly, ecological resource core material

Polypropylene Honeycomb - Is lightweight and extremely durable, and is commonly used as a core for doors installed in pharmaceutical applications.

 

Urethane Foam – Has excellent insulating qualities, plus it is known for sound control, low permeability and helps to prevent mold and mildew growth.

 

Gypsum – Is a fire resistant mineral core that is used when the door is required to be fire rated. Gypsum is a sustainable product.

 


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