Thermal Strut Technology...

Keymark offers the latest in thermal performance to the fenestration industry with it's brand new "Thermal Strut" equipment and the use of Technoforms or Ensinger's unique thermal strut separator between the aluminium profiles to achieve the necessary heat/cold insulating properties.  Thermal separation in aluminium profile systems makes use of the physical advantages of plastics.  Technoform and Ensinger's insulating strips are tested and certified according to international regulations: IFT, UBATC and CIDEMCO.

Advantages of Thermal Strut:

  • The I-Strut is mechanically bonded between the aluminum frame.
  • The I-Strut and the aluminum frame have identical coefficients of expansion.  As a result, thermal break I-Strut systems resist the thermal cycling, which occurs in actual building conditions better than any method available.  The standards used to measure I-Strut are published in AAMA TIR-A8-04.
  • The strut resists corrosive effects of chemicals used in cleaning in both maintenance, manufacturing, and installation.
  • High melting temperature - I-Strut will withstand heat in fenestration systems better than any other system, resulting in improved structural integrity.
  • The use of polyamide strut also allows for a new versatile level of product design.  With this method the two separate extrusions can easily have different paint or anodize combinations, which adds significant flexibility to each individual use.
  • Dry shrinkage concern with polyurethane is eliminated.
  • Increased structural strength.
  • Ability to make various window systems with the same aluminum profiles, using different sized polyamide struts.      
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