Plasterboard
Plain English. Practical detail. UK context.
Plasterboard is a manufactured board with a gypsum core and facing layers, used to line walls and ceilings. Different products serve different fire, moisture, acoustic or thermal purposes.
Last reviewed: (editorial review against the public sources listed below).
What it means in practice
Specify the board as part of a lining or partition system. Thickness, layers, framing, fixings, joint treatment and penetrations affect performance. A coloured facing is a useful product cue, but colour alone does not establish the rating of the finished wall.
Check that substrates and service routes are ready before boarding. Provide suitable support at edges and planned heavy fittings, and maintain any required continuity at junctions rather than treating boards as independent panels.
For homeowners
Ask which board is proposed for wet or acoustically sensitive areas and what finishes it is intended to receive. Moisture-resistant board is not a complete waterproofing system for a shower. Also establish where heavy cupboards or sanitary fittings will be supported before the wall is closed.
Practical checks
Keep the product and wall system details where performance matters. Confirm which surfaces are being skimmed, taped and jointed or prepared for another finish.
The finished wall is more than the board
A fire or acoustic rating normally belongs to an identified assembly: framing, board type and layers, insulation, fixings, joints and perimeter details work together. An apparently minor substitution can therefore affect performance. Service penetrations and recessed accessories must be detailed appropriately rather than cut wherever convenient. In wet locations, distinguish the board's moisture resistance from the waterproofing needed for the exposure. A tiling background must also support the specified finish and associated loads. Trainees should retain the system reference and product labels before installation; once skimmed and painted, different boards and missing layers can be impossible to identify without opening the wall.
Applicable guidance and finishing choices
England's Approved Documents B and E provide guidance on relevant fire and sound requirements, with Part A relevant where structure is affected. Other UK jurisdictions must be checked separately. British Gypsum's system guidance illustrates why a proprietary lining needs its complete specification rather than a board-only substitution. Agree whether the finish is skim plaster, jointed board or another prepared surface and which decoration is included. Drying, suction and the coating system affect the final appearance. Do not hide damp or a moving background behind fresh board without investigating it; a flat new face can conceal the original defect rather than repair it.
Frequently asked questions
Is moisture-resistant plasterboard waterproof?
No. It is more resistant to moisture than a standard board, but shower and wet-room waterproofing needs a suitable complete system for the intended exposure.
Does pink or green board prove a wall meets a rating?
No. Colour is not a certification of the finished assembly. Check the exact product and the complete specified construction.
Sources and further reading
Public sources and further reading. Sources checked: 8 November 2026. Consult the original for details and later changes.