Top and bottom channels, side channels if necessary: glazier's U sections, holding the panel over 2 cm. Use nylon glazier's shims to support the edge in the bottom channel. Avoid the use of black (carbon-based) sealants which might migrate into the marble. Point and glue with special non-staining silicone, DOW CORNING DC 897 or similar, or polyurethane sealant. Bird's beak finish on sharp angles polished edge 45° mitre cuts in factory. For separating partitions, bar facades, etc., provide a metal plinth or similar to protect the bottom of the panel. High units should be reinforced by extra-clear glass struts glued perpendicularly, to avoid the panels sagging, unless channel sections are used on all four sides or rigid joins used between panels. The minimum gap between two panels should be 2 mm, optionally filled with DC 897 silicone or equivalent.
If backlighting is used, allow access to the lamps for maintenance, keep fluorescent lamps at least 150 mm from the rear surface to avoid shadows, and ensure that the cavity is sufficiently large and/or well ventilated to avoid overheating.
The panels may also be lit along the side using fibre optics.
Separating partitions Pompidou Centre - Paris
Partitions Entrance hall NEXANS headquarters - Paris