Complete Guide to Plaster & Plasterboard
Plaster and plasterboard are essential for creating smooth interior walls and ceilings. Our comprehensive guide covers everything from choosing the right type to finding the best prices.
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Types of Plasterboard
Standard plasterboard is suitable for most general applications. Moisture-resistant plasterboard (green board) is ideal for bathrooms and kitchens. Fire-resistant plasterboard provides additional fire protection for safety-critical areas. Acoustic plasterboard reduces sound transmission between rooms.
Plaster Types
Bonding plaster is used as a base coat on low-suction backgrounds. Browning plaster works on high-suction surfaces like brick. Multi-finish provides a smooth top coat. One-coat plasters save time by combining base and finish coats.
Buying Tips
Always order 10% extra plasterboard for cuts and waste. Store plaster in dry conditions as it absorbs moisture. Check if delivery is included in the price. Consider buying in bulk for larger projects.
Helpful Calculators
Frequently Asked Questions
9.5mm is typically used for ceilings, 12.5mm for standard walls, and 15mm where extra fire or sound resistance is needed. For dot and dab applications, 12.5mm is standard.
One 25kg bag of multi-finish plaster covers approximately 2-3 square metres at 2mm thickness. For backing plaster, coverage is around 1.5-2 square metres at 11mm thickness.
Tapered edge boards have recessed edges that allow jointing tape and compound to sit flush. Square edge boards are used where joints will be plastered over.
Plaster typically takes 2-3 days to dry for each coat, but can take up to a week depending on thickness, temperature, and humidity. Wait until it turns uniformly light pink before decorating.