Introduction to Dry-Lining

Module 1: Introduction to Dry-Lining

Definition and Applications of Dry-Lining

Dry-lining is a modern construction technique where plasterboard (also known as drywall or gypsum board) is fixed to walls, ceilings, or partitions using adhesives, screws, or metal framing systems, instead of traditional wet plaster. This method creates smooth, ready-to-decorate surfaces quickly and efficiently.

Applications include:

• Internal walls & partitions – Creating room dividers in homes and offices.

• Ceilings – Suspended or fixed ceilings in commercial and residential buildings.

• Renovations – Covering uneven or damaged walls without extensive re-plastering.

• Insulated & soundproofed spaces – Adding thermal or acoustic properties to buildings.

Advantages Over Traditional Wet Plastering

Dry-lining offers several benefits compared to conventional wet plaster techniques:

1. Faster Installation – Plasterboard can be fixed in a fraction of the time it takes for wet plaster to dry (which can take days or weeks).

2. Cleaner Process – No mixing of wet materials, reducing mess and drying time.

3. Versatility – Can be used on various surfaces (brick, block, metal, or timber frames).

4. Improved Insulation & Acoustics – Plasterboard can be combined with insulation materials for better thermal and sound performance.

5. Easier Repairs – Damaged sections can be cut out and replaced without re-plastering entire walls.

6. Lightweight – Reduces structural load compared to dense plaster.

Types of Plasterboard (Detailed Breakdown)

Plasterboard comes in different varieties, each designed for specific applications:

1. Standard Plasterboard

• Thickness: Typically 9.5mm or 12.5mm.

• Uses: General-purpose wall and ceiling linings in dry areas.

• Features: Smooth surface for painting or wallpapering.

2. Moisture-Resistant (MR) Plasterboard

• Core: Water-repellent additives and green facing paper.

• Uses: Bathrooms, kitchens, and other high-humidity areas.

• Limitations: Not fully waterproof—requires tiling or tanking in wet zones.

3. Fire-Resistant Plasterboard

• Core: Reinforced with glass fibres and other fire-retardant materials.

• Uses: Fire-rated partitions, ceilings, and escape routes.

• Performance: Can provide 30–120 minutes of fire resistance depending on thickness and construction.

4. Acoustic Plasterboard

• Core: Denser gypsum with sound-damping layers (sometimes with a viscoelastic core).

• Uses: Studios, cinemas, apartments, and offices where noise reduction is critical.

• Installation Tips: Often paired with insulation for maximum soundproofing.

5. Impact-Resistant Plasterboard

• Core: Reinforced with fibreglass mesh for durability.

• Uses: High-traffic areas like schools, hospitals, and corridors.

6. Insulated Plasterboard

• Structure: Pre-bonded to rigid foam insulation (PIR or phenolic).

• Uses: External walls, loft conversions, and thermal upgrades.

• Benefits: Reduces heat loss without needing separate insulation layers.

Each type is chosen based on project requirements, ensuring performance in durability, safety, and environmental conditions.