CEKAL marking of insulating glazing

Certified insulating glazing is marked indelibly on the glass, in the following sequence
  • Usage indicators
B : use of glazing with exposed sealant (exposed sealant on both sides, roof, etc),
C : use as bonded glazing,
R : use in a renovation profile.
  • Performances indicators
TR ou Ug: followed by a number, glazing Ug thermal performance level.
AR : followed by a number, conventional acoustic performance level depending on the CEKAL classification.
The marking sequence also appears on the certificate, issued to the production centre, which authorises it to mark CEKAL on glazing that complies with the certification requirements.
The certificate specifies the scope of certification: the certified glazing family or families, the types of glazing subject to specific monitoring, and the assembly processes.