Why New Buildings Mark Glass Doors With An ‘X’? Small Sign Prevents Big Accidents

• New buildings mark glass doors and windows with an ‘X’ shape tape for safety, not decoration.
• Modern architectural glass is highly transparent, making it difficult to detect during construction.
• The ‘X’ mark warns workers of a glass barrier, preventing them from walking into it and sustaining injuries.
• It also prevents accidental damage to glass panels by workers carrying heavy materials.
• Glass manifestation is mandatory in many countries; temporary tape is replaced by permanent markings post-construction.