Does water damaged plasterboard need to be replaced?
Generally, yes the board should be removed and replaced with an equivalent Gyproc product to maintain the original performance criteria. This would certainly be the case where boards can be seen to be ‘bowed’, suffering with mould growth or where paper de-lamination has occurred. Other instances such as surface wetting, which may dry out relatively quickly, could still develop water stains or mould requiring remedial treatment/action at a later stage of the project. If the plasterboard has been exposed to contaminates in the water, or where mould growth is present, professional advice should be obtained before proceeding further.
Can Gyproc plasterboard be used around fireplaces and wood burning stoves
Gyproc plasterboard, including Gyproc FireLine, is not suitable for use in temperatures above 49oC.
What is the density of Gyproc plasterboards?
Circa 600 to 1000kg/m3 depending on board type. To calculate the density of the plasterboard, establish the weight per square metre and divide it by its thickness (metres), e.g. 12.5mm Gyproc WallBoard weighs 8kg/m2, divide by 0.0125m = 640kg/m3.
What is the fire resistance performance of Gyproc plasterboard?
Fire resistance performance is generally based on the overall construction, e.g. partition, floor or structural steelwork, and not just the board itself. Please refer to the relevant section of the White Book for further details.
What radius do plasterboards achieve?
12.5mm Gyproc WallBoard can be curved to a minimum radius of 3600mm. 6mm Glasroc F MULTIBOARD can be curved to minimum radius 600mm. See the GypWall CURVE system. Also, please refer to the GypWall CURVE section of the White Book for further information if required.
Why is Gyproc plasterboard supplied in 1200mm wide sheets?
Plasterboard generally comes in 1200mm wide sheets as it is designed to suit the standard 600mm stud spacing used in housing today.
How do you provide a 30 or 60 minute fire-rated horizontal membrane?
Use CasoLine MF incorporating Gyproc WallBoard or Gyproc FireLine board and insulation. For 30 minutes fire resistance in accordance with BS 476: Part 22, use two layers 12.5mm Gyproc WallBoard overlaid with 100mm Isover Spacesaver Ready-Cut. For 60 minutes fire resistance in accordance with BS 476: Part 22, use two layers 15mm Gyproc FireLine board overlaid with 30mm stone mineral wool (minimum 24 kg/m3).