How and where to use guide

Suitable applications and locations

This moisture-resistant plasterboard is engineered for areas where humidity levels are consistently elevated. Use it in kitchens where steam from cooking is regular, bathrooms with frequent showers or baths, utility rooms with washing machines or tumble dryers, and any other internal spaces subject to sustained moisture exposure. The Type H2 classification to EN 520 confirms it meets the performance standard required for these applications. Do not use standard plasterboard in these locations as it will absorb moisture, leading to deterioration, mould growth and structural failure.

• Kitchens: around sinks, cookers and food preparation areas
• Bathrooms: walls and ceilings in shower rooms and wet rooms
• Utility rooms: areas with washing machines and tumble dryers
• Any internal partition or ceiling in high-humidity environments

Installation and fixing

Install this plasterboard using standard plasterboard fixing methods appropriate for 12.5mm board. The 2400mm x 1200mm sheet format allows efficient coverage of wall and ceiling areas. Ensure boards are fixed securely to timber or metal studs using the correct fasteners for your frame type. Stagger joints between sheets to avoid continuous lines of weakness. Leave appropriate expansion gaps at perimeter edges and around service penetrations. All joints, fixings and edges must be finished with moisture-resistant joint compounds and tapes specifically designed for use with Type H2 boards to maintain the moisture-resistant properties of the installation.

• Fix securely to timber or metal studs with appropriate fasteners
• Stagger board joints to avoid continuous weak lines
• Leave expansion gaps at perimeters and around penetrations
• Use moisture-resistant joint compounds and tapes for all finishing

Finishing and maintenance

Once installed and jointed, finish the surface with moisture-resistant primer and paint systems suitable for damp environments. Standard emulsion paints are not adequate in high-moisture areas. Ensure adequate ventilation in the room to manage humidity levels effectively; moisture-resistant plasterboard provides protection but does not eliminate the need for proper ventilation. Inspect periodically for any signs of water ingress or damage, particularly around service penetrations and at ceiling level where condensation may accumulate. Prompt repair of any damage will maintain the integrity of the moisture-resistant system.

• Apply moisture-resistant primer and paint systems, not standard emulsion
• Ensure adequate room ventilation to manage humidity
• Inspect regularly for water damage or condensation issues
• Repair any damage promptly to maintain moisture protection

Limitations and on-site considerations

Whilst this board provides effective moisture resistance, it is not suitable for areas subject to direct water spray or immersion. In wet rooms with heavy water exposure, additional waterproofing membranes may be required behind the plasterboard. The 12.5mm thickness is appropriate for standard partition and ceiling work but check structural requirements for your specific application. Store boards flat and dry on site before installation, and protect them from weather exposure during construction. Moisture-resistant plasterboard is heavier than standard board due to the additives, so ensure adequate labour and handling equipment are available for safe installation.