Glass shall be free of undue defects.
Glass should be checked in daylight, from within the room and from a minimum distance of 2m (3m for toughened, laminated or coated glass). The following are acceptable where they are not obtrusive or bunched:
- bubbles or blisters
- hairlines or blobs
- fine scratches not more than 25mm long
- minute particles.
The above does not apply to areas within 6mm of the edge of the pane, where minor scratching may occur.
Last updated: 2nd January 2024