CEKAL marking of insulating glazing

Certified insulating glazing is marked indelibly on the glass, in the following sequence
 
Mandatory marking of certified glazing
Trademark or company name Manufacturing reference Production Site Usage indicators Optional performances indicators*
INSULATING G PERIOD (1) CEKAL 999    
(1) or the manufacturer's website address, and a product identification number *Indicative
 
  • 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.
  • Optional performances indicators
Ug: followed by a number, glazing Ug thermal performance level.
AR : followed by a number, conventional acoustic performance 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.