January 9th, 2014. The English versions of the ift guidelines to “Warm Edge” are available now for purchase from the new ift online-shop for literature:

  • ift-guideline WA-08/2 “Thermally improved spacers – Part 1:
    Determination of the representative Psi-values of window profile sections here
  • ift-Richtlinie WA-17/1 “Thermally improved spacers – Part 2:
    Determination of the equivalent thermal conductivity by means of measurement here