Ceiling Tile

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Composition: The GRG range of ceiling tiles are manufactured from glass reinforced gypsum and comprise non-combustible gypsum casting plaster reinforced with a glass fiber membrane resulting in a light weight, strong and prestressed panel.

Surface Finish: The plaster has a silky smooth or textured molded finish.

Color: The tiles are normally supplied in their natural white finish and can be pre- decorated to order.

Dimensions: All designer tiles are designed for installation on a standard 600x600mm module 24mm table exposed metal grid and are precision made to within plus or minus 0.25mm.

Weight: For a guide, the tile weights are shown below but may vary depending upon the gypsum source.

Fire Performance: Non-combustibility: GRG tiles are rated non-combustible as defined in BS 476: Part-4, 1970. Surface Spread of Flame: GRG tiles are rated Class 1 for surface spread of flame to BS 476: Part-7, 1987. Fire Propagation: Test results to BS 476: Par-6, 1989 indicate a Class O surface. Smoke and Toxic Fume Emission: The tiles are zero rated for smoke emission. No toxic fumes are given off.

Humidity Resistance: The tiles have excellent moisture resistance and can be used in areas of high humidity including covered external areas, kitchens and bathrooms. Tested in an atmosphere of 95% R.H. at 12°C for 14 days, the tiles did not sag or distort and showed only a minimal increase in weight. Unlike most other ceiling materials, this important attribute can often be used to speed up the building program by installing the ceiling before the building is fully weather tight.

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Metal Tiles are manufactured out of coil coated galvanised steel/aluminium alloy AA 3105 on advanced equipment, which includes several levelling stages in the manufacturing process. For the clip-in tile, two sides of each tile are raised and pipped and stopped to ensure positive engagement into the spring tee yet allow demounting of individual tiles. For the lay-in system, the tiles have a flange on each end which lays on the exposed grid. All Metal tiles have square/bevelled edges.
 
Suspension
Clip-in-system: Tiles/planks are suspended by means of a suspension system comprising 0.5mm galvanised steel clip-in profiles installed at correct spacing to support the tiles/planks. Suspension profiles are suspended from roof structure by GI ceiling brackets. GI suspension angles and hold-on clamps at max. 1200mm centre to centre along the clip in profile. This rigid suspension is also suitable for exterior use.
 
Lay-in-System: Suspension system is standard 24mm table exposed metal grid. Grid features 38mm high main runners and cross tees, roll formed from galvanised steel to BS 2989 Z-18 zinc coating. The main runners feature bayonet ends and the cross tees stab ends for quick and simple coupling. The runners are pre-slotted to construct a variety of layouts. The main and cross runners are provided with a coil coated steel capping on the exposed table in off-white colour. The grid is suspended from the roof with GI wire rod and quick adjustment suspension hangers along the runners. The grid system is designed to satisfy ASTM C635 intermediate duty loading and deflection criteria. This system is only suitable for interior use.
 
Paint Finish
Steel tiles/planks: Steel tiles/planks are finished on exposed side with 20 micron polyester coil coating over primer in approved shade and backing coat on rear surface (nominal 5 microns), or with a 50 micron epoxy polyester powder coating on exposed surface. Aluminium tiles/planks: Aluminium tiles/planks are finished on exposed side with 20 micron polyester coil coating over primer in approved shade and backing coat on rear surface (nominal 5 microns), or with a 50 micron epoxy polyester powder coating on exposed surface. Wall angles are finished with 50 micron epoxy polyester powder coating paint in broken white shade.
 
Perforations
 
Metal tiles are also available with perforations for providing acoustic performance characteristics. Tiles and planks are perforated as a standard with 2.5mm dia. holes at 5.5mm centre to centre in a regular pattern. Other special/non-standard perforations are also available. Tiles and planks when backed with 25mm thick resin bonded mineral wool2 (48 kg/m) provide good sound absorption. Tiles and planks are also available with a factory applied acoustic tissue to the back side, which provides good sound absorption.