Understanding Gyproc: A Comprehensive Guide to Gypsum-Based Plasterboards

Gyproc is a brand name that has become synonymous with gypsum plasterboards in India — much like "Xerox" for photocopying or "Fevicol" for adhesive. Manufactured by Saint-Gobain, one of the world's largest construction materials companies, Gyproc products are used in millions of construction projects across India and globally. This guide covers everything you need to know.

What Is Gyproc?

Gyproc is a brand of gypsum plasterboard manufactured by Saint-Gobain. A plasterboard (also called drywall or gypsum board) consists of a gypsum core sandwiched between two layers of paper or fibreglass. The gypsum provides fire resistance and rigidity; the paper facing provides tensile strength and a smooth, paintable surface.

Saint-Gobain has been producing Gyproc products for over 90 years globally. In India, Gyproc is the market-leading brand for gypsum plasterboards and associated systems.

Benefits of Gyproc Plasterboards

Fire Resistance

Gyproc boards are inherently fire-resistant. The gypsum core contains approximately 21% chemically bound water. When exposed to fire, this water evaporates gradually, absorbing heat and significantly slowing the spread of flames. Standard Gyproc boards achieve 30–60 minute fire ratings; specialised fire-rated boards achieve up to 4 hours. This makes Gyproc essential for fire safety compliance in commercial buildings, hospitals, and high-rise residential projects.

Sound Insulation

Gyproc's composition effectively reduces sound transmission between rooms. Specialised acoustic Gyproc boards, combined with acoustic insulation within cavity walls, can achieve STC ratings of 40–55 dB — suitable for theaters, recording studios, conference rooms, hospital wards, and hotel rooms.

Thermal Insulation

Gyproc boards have low thermal conductivity, helping maintain comfortable indoor temperatures. When combined with insulation batts in cavity wall and ceiling systems, they significantly reduce heating and cooling loads.

Rapid Installation

Dry construction with Gyproc plasterboards is significantly faster than traditional wet plaster methods. Boards are screw-fixed to metal framing, joints are filled and taped, and surfaces are ready for painting within days. No curing or long drying times required.

Lightweight

Gyproc boards weigh 8–12 kg/m² compared to 25–40 kg/m² for traditional wet plaster. This reduces structural loads and simplifies installation in renovation projects or where weight is a design constraint.

Types of Gyproc Products

Common Applications of Gyproc in India

• False ceilings: The most common residential use. Gyproc ceiling systems provide a smooth, flat finish for interior ceilings and allow easy concealment of electrical wiring and HVAC ducts.
• Interior partition walls: Gyproc partitions are faster to build, lighter, and more fire-resistant than brick partitions. Widely used in offices, commercial spaces, and apartments.
• Drywall cladding: Lining existing walls with Gyproc boards improves fire resistance and allows concealment of plumbing and electrical without chasing.
• Shaft walls and duct enclosures: Fire-rated Gyproc systems are specified for elevator shafts, service ducts, and stairwell enclosures in multi-storey buildings.
• Acoustic treatment: Gyproc acoustic systems are used in home theaters, music practice rooms, and commercial spaces requiring sound separation.

Gyproc vs Gypsum Wall Plaster — Understanding the Difference

Gyproc plasterboards and gypsum wall plaster are different products serving different purposes. Gypsum wall plaster is a wet-applied coating applied directly to bricks, blocks, or concrete surfaces to produce a smooth finish. Gyproc plasterboards are dry, pre-manufactured panels used to construct partition walls and false ceilings. Both are gypsum-based, and both are supplied and installed by companies like Kanish Plasters.