Gypsum plasterboard with glass fibre and other additives in the core. Gyproc Fireline consists of an aerated gypsum core with glass fibre and other additives encased in, and firmly bonded to, strong paper liners. Gyproc Fireline is a plasterboard that is suitable for drylining internal surfaces. Used in British Gypsum partition, wall lining and ceiling systems to give increased fire protection. Also used for protection to structural steel. This plasterboard is one of the products within our plasterboard range that is certified to BES 6001 achieving a rating of Very Good. Properties Length: 2.4m. Width: 1.2m. Thickness: 12.5mm. Weight: 9.8kg/m2. Fire rating: class 1 both sides - BS 476. Thermal resistance: 0.05 mK/W. Thermal conductivity: 0.24 W/mK. Face: pink face paper. Brown reverse side paper. Edging: tapered edge. Application Fixing: Fix boards with decorative side out to receive joint treatment or a skim plaster finish. Lightly butt boards together. Never force boards into position. Install fixings not closer than 13mm from cut edges and 10mm from bound edges. Position cut edges to internal angles whenever possible, removing paper burrs with fine sandpaper. Stagger horizontal and vertical board joints between layers by a minimum of 600mm. Locate boards to the centre line of framing where this supports board edges or ends. Plastering: The face (pink) of Gyproc FireLine can be plastered with either Thistle Board Finish or Thistle Multi-Finish. There should be a minimum delay between completion of the lining and the commencement of plastering. Jointing : Gyproc jointing materials produce durable joint reinforcement and a smooth, continuous, crack-resistant surface ready for priming and final decoration. A number of jointing specifications are available to suit the board type, method of application, and site preference. Decoration : After the joint treatment has dried, decoration, including any decorators preparatory work, should follow with the minimum delay. Cutting: This product may be cut using a plasterboard saw or by scoring with a sharp knife and snapping the board over a straight edge. Holes for switch or socket boxes should be cut out before the boards are fixed using a utility saw or sharp knife. When cutting boards, power and hand tools should be used with care and in accordance with the manufacturers recommendations. Power tools should only be used by people who have been instructed and trained to use them safely. Appropriate personal protective equipment should be used.