60/120/240 minutes* fire rating, insulation and/or integrity in accordance with the criteria of BS476: Part 22: 1987.

Care should be taken that any structural element by which the ceiling system is supported, e.g. a beam, floor or wall, has at least an equivalent fire resistance.

9mm PROMATECT®-H matrix engineered mineral boards as manufactured by Promat International (Asia Pacific) Ltd. All joints to be coincident with steel framing. Standard board dimensions 1220mm x 2440mm x 9mm.

Perimeter galvanised steel angles will be fastened to the wall with M6 metal anchors at 500mm maximum centres. Steel channels C-50mm x 31mm x 0.6 will be used to form a ceiling grid of 610mm (primary) by 1220mm (secondary). Ceiling hangers will be suspended at 1220mm centres and fixed to all the 610mm centres primary channels to complete the framework.

The boards 9mm thick, in single/double* layers will fixed to the underside side of the framework with self-tapping screws at 200mm maximum centres, a minimum of 12mm from the board edge. Board joints must coincide with the steel channels.

Mineral wool, 60mm thick x 80kg/m3 nominal density, as required by the system specification, will be placed over the ceiling. The complete system along with material and framing is tested and/or assessed to meet the requirements of BS476: Part 22.

The complete system along with material and framing is tested and/or assessed to meet the requirements of BS476: Part 22.

Plain butt joints between machined edges of boards. (1)
Joints filled in preparation for painting. (2)
Joints filled and taped in preparation for decoration. (3)

Surface of boards to be prepared for painting/plastering/tiling(4) in accordance with manufacturer’s recommendations.

• (1), (2), (3), (4), * delete as appropriate.
• Perimeter gaps will be filled with fire resistant PROMASEAL® AN Acrylic Sealant.