British Gypsum

British Gypsum is the UK's leading manufacturer of plaster, plasterboard, and interior lining systems for the construction industry. The company has been operating for over 100 years and supplies products used in virtually every type of building project across the country, from new-build housing to large-scale commercial developments. Their product range includes Thistle plasters, Gyproc plasterboard, Isover insulation, and a wide selection of accessories for drylining, plastering, and partition systems. British Gypsum also provides extensive technical support and specification guidance through its White Book system, which is widely used by architects, specifiers, and contractors. The company operates manufacturing sites and mines across the UK, making it a fully integrated business from raw material extraction through to finished product. For builders merchants and tradespeople, British Gypsum products are considered the industry standard for interior wall and ceiling finishing.

British Gypsum is owned by Saint-Gobain, the French multinational building materials corporation headquartered in Paris. Saint-Gobain acquired British Gypsum in 2005, bringing it under the same global group that operates gypsum businesses in numerous countries worldwide. Saint-Gobain is one of the largest building products companies in the world, with operations spanning insulation, glass, piping, and interior solutions across more than 70 countries. Under Saint-Gobain ownership, British Gypsum has continued to invest in its UK manufacturing operations and has expanded its product range to include higher-performance plasterboard and system solutions. The acquisition gave British Gypsum access to wider research and development resources while maintaining its strong UK brand identity. For customers, the Saint-Gobain backing provides confidence in continued product availability, technical innovation, and long-term supply chain stability.

Gypsum is a naturally occurring mineral composed of calcium sulphate dihydrate, which means it contains water molecules bound within its crystal structure. It is a soft, white or grey sedimentary rock that has been used in construction for thousands of years — even the ancient Egyptians used gypsum-based plaster in the pyramids. In modern construction, gypsum is the essential raw material for manufacturing plaster, plasterboard, and cement additives. When gypsum is heated, it loses some of its water content and becomes a powder known as plaster of Paris, which sets hard when water is added back. Beyond construction, gypsum is also used in agriculture as a soil conditioner, in the food industry as a firming agent, and in medical applications for casting broken bones. Its fire-resistant properties make it particularly valuable in building products, as gypsum-based plasterboard provides significant passive fire protection to walls and ceilings.

Yes, gypsum is actively mined in the UK and has been for centuries. The main gypsum deposits in England are found in the East Midlands, particularly around Nottinghamshire and Leicestershire, where British Gypsum operates significant mining operations. The Bantycock mine near Newark-on-Trent and the Barrow upon Soar quarry are among the key extraction sites supplying raw material for UK plasterboard and plaster production. The UK's gypsum deposits were formed millions of years ago during the Triassic period when shallow seas evaporated and left behind thick beds of the mineral. British Gypsum also supplements mined gypsum with desulphogypsum, a byproduct from coal-fired power station flue gas cleaning, although this source has diminished as coal power generation has declined. Having domestic gypsum reserves means the UK construction industry is less reliant on imports for this essential building material than many other European countries.

British Gypsum's headquarters are located in East Leake, Loughborough, in the East Midlands of England. This location places the company close to its principal gypsum mining operations in Nottinghamshire and Leicestershire, which has been the heart of UK gypsum extraction for well over a century. The East Leake site also houses the company's main technical and research facilities, where new products and systems are developed and tested. British Gypsum operates several manufacturing plants across the UK, producing plasterboard, plasters, and associated products to serve the national market. The company also has a network of regional distribution centres to ensure reliable supply to builders merchants and construction sites throughout England, Scotland, and Wales. Their technical academy at East Leake provides training courses for plasterers, drylining installers, and other construction professionals working with their products.

British Gypsum is the largest plasterboard manufacturer in the UK, producing the well-known Gyproc range of boards used across residential and commercial construction. Knauf is the other major plasterboard producer operating in the UK, with manufacturing facilities at Sittingbourne in Kent and Immingham in Lincolnshire. Between them, British Gypsum and Knauf supply the vast majority of plasterboard used in UK construction projects. Siniat, now part of the Etex Group, also manufactures plasterboard for the UK market. Each manufacturer offers standard, moisture-resistant, fire-rated, and acoustic plasterboard variants to meet different building regulations and performance requirements. British Gypsum's Gyproc range remains the most widely specified and stocked brand in UK builders merchants, with products like Gyproc WallBoard and Gyproc FireLine being considered standard specifications on most projects. When choosing plasterboard, it is important to match the board type to the specific application — fire rating, moisture resistance, and impact resistance all vary between products.

Some older British Gypsum products manufactured before the mid-1980s did contain asbestos, as was common practice across the entire construction materials industry at that time. Asbestos was widely used as a reinforcing and fire-resistant additive in numerous building products including some plasterboards, textured coatings, and insulation materials. The use of asbestos in construction products was progressively restricted through the 1980s and fully banned in the UK in 1999. All British Gypsum products manufactured from the mid-1980s onwards are completely asbestos-free. If you are working on a property built or refurbished before 1990, you should always assume that plasterboard, artex coatings, and other interior linings may contain asbestos until a proper survey has been carried out. Any suspected asbestos-containing materials should only be handled or removed by a licensed asbestos removal contractor, and you should never cut, drill, or sand materials that may contain asbestos fibres.

Gypsum plasterboard is available in several types, each designed for specific applications and performance requirements in construction. Standard wallboard is the most commonly used type, suitable for general wall and ceiling linings in dry internal areas. Moisture-resistant plasterboard features a water-repellent core and is designed for use in kitchens, bathrooms, and other areas where humidity levels are higher than normal. Fire-rated plasterboard, such as Gyproc FireLine, contains glass fibre and other additives that improve its performance in fire, making it essential for party walls, fire escape routes, and other areas requiring enhanced fire protection. Acoustic plasterboard is a higher-density board that reduces sound transmission between rooms and is commonly specified for separating walls in flats and semi-detached houses. Impact-resistant boards are available for high-traffic areas like corridors, schools, and healthcare buildings where walls may be subject to knocks and damage. Choosing the correct board type for each location within a building is essential for meeting Building Regulations and ensuring the finished construction performs as intended.

The price of gypsum plasterboard has increased significantly in recent years due to a combination of rising energy costs, raw material supply changes, and increased manufacturing expenses. Plasterboard production is highly energy-intensive — the manufacturing process requires large amounts of heat to dry gypsum and form it into boards, so gas and electricity prices directly affect the final product cost. The decline of coal-fired power generation in the UK has also reduced the supply of desulphogypsum, a low-cost byproduct that previously supplemented mined gypsum, meaning manufacturers now rely more heavily on quarried material. Transport costs have also risen as fuel prices have increased, and plasterboard is a bulky, heavy product that is expensive to move. Despite these price rises, plasterboard remains one of the most cost-effective ways to line internal walls and ceilings compared to alternatives like wet plastering directly onto blockwork. Buying in bulk through a builders merchant and planning deliveries to reduce waste are the best ways to manage plasterboard costs on a project.

The most important use of gypsum in construction is the manufacture of plasterboard and interior plasters, which together account for the vast majority of global gypsum consumption. Plasterboard has become the default material for lining internal walls and ceilings in virtually every type of building in the UK, from houses and flats to offices, hospitals, and schools. Its popularity is driven by its speed of installation, fire resistance, sound insulation properties, and the smooth finish it provides for decoration. Gypsum plaster — applied as a skim coat over plasterboard or directly onto blockwork — gives walls their final smooth surface ready for painting or wallpapering. Gypsum is also used as a setting retarder in Portland cement, controlling how quickly concrete sets and making it workable for longer periods on site. In addition to these primary uses, gypsum-based products are specified for fire protection, acoustic insulation, and moisture management within building envelopes. Without gypsum, modern interior construction methods as we know them would not be possible.