The end face and plane of u-shaped glass shall be free from jagged notches or cracks.

Each individual U-shaped glass member shall be supported on a uniformly elastic liner.

There should be no hard contact between glass and adjacent metal, concrete, or mortar structures.

Leave a gap between the upper end of the U-shaped glass and the building elements above it, such as lintels, beams, and roof slabs. 

Leave a gap of at least 25mm between the upper end of the U-shaped glass and the adjacent structure above it to allow for movement and facilitate installation and replacement.

The longitudinal joints between the u-glass must be filled with an elastic sealing material.

Sealants and sealing components, such as two-part polysulfide sealant, silicone rubber and flexible PVC profiles, are used between U-shaped glass and its supporting frame and between adjacent glass panels.

Round sealing cord for the joint between U-shaped glass and its frame.

Strip liners, flexible polyvinyl chloride, bituminous strips, rigid foamed plastics, etc. , used as expansion and sliding joints between U-shaped glass and the frame. Expansion bolt for fixing the frame.