Plastering Course

Lesson 1 • Plastering Materials and Their Properties

Examines gypsum, cement, lime, and polymer-based plasters. Students match material types to appropriate applications based on substrate and environment.

Lesson 2 • Reading Plans and Job Specifications

Teaches interpretation of construction drawings and written specifications relevant to plastering work. Students extract key dimensions and finish requirements from documents.

Lesson 3 • Tools and Equipment Identification

Introduces hand tools, power tools, and mixing equipment used in plastering. Students learn correct names and primary functions of each tool.

Lesson 4 • Workplace Health and Safety

Addresses hazard identification, personal protective equipment, and safe handling of materials. Connects safety compliance to professional trade practice.

Lesson 1 • Cleaning and Repairing Substrates

Teaches removal of contaminants, loose material, and existing failed plaster. Clean, sound substrates are essential for strong plaster adhesion.

Lesson 2 • Lathing and Mesh Reinforcement

Covers metal lath, fibre-glass mesh, and expanded metal for reinforcing plaster over problematic substrates. Reinforcement prevents cracking at stress points.

Lesson 3 • Understanding Substrate Types

Identifies masonry, concrete, timber, and board substrates and their plastering challenges. Provides the diagnostic basis for all preparation decisions.

Lesson 4 • Bonding Agents and Primers

Explains when and how to apply bonding agents, PVA, and specialist primers. Correct primer selection directly affects plaster bond strength and durability.

Lesson 1 • Water-to-Plaster Ratios

Explains how water quantity affects setting time, strength, and workability. Students calculate and measure ratios accurately for each plaster product.

Lesson 2 • Machine Mixing Procedures

Covers paddle mixer setup, speed settings, and batch sequencing for larger jobs. Machine mixing improves consistency and reduces physical fatigue on site.

Lesson 3 • Quality Checks Before Application

Teaches slump, consistency, and temperature checks before applying mixed plaster. Pre-application checks prevent wasted material and poor-quality finishes.

Lesson 4 • Hand Mixing Techniques

Teaches manual mixing methods for small batches using a hawk and bucket. Proper hand mixing ensures lump-free, uniform plaster without air entrapment.

Lesson 1 • Curing and Drying Base Coats

Explains curing requirements, drying times, and environmental controls for base coats. Proper curing prevents shrinkage cracking and ensures coat integrity.

Lesson 2 • Setting Out and Screeding

Covers establishing plumb dots, running screeds, and setting thickness guides. Accurate screeds are the reference plane for all subsequent plaster coats.

Lesson 3 • Applying the Scratch Coat

Teaches throwing and spreading the first coat onto prepared substrates. The scratch coat creates mechanical key for the brown coat to bond to.

Lesson 4 • Applying the Brown Coat

Covers application of the second coat to build thickness and improve flatness. Students use darbies and straightedges to achieve a true, even surface.

Lesson 1 • Identifying and Correcting Defects

Teaches recognition of hollows, cracks, crazing, and trowel marks in finish coats. Students apply remediation techniques before the plaster fully hardens.

Lesson 2 • Finish Coat Materials and Selection

Compares multifinish, board finish, and lime finish plasters for different base coats. Correct material selection determines the quality and durability of the final surface.

Lesson 3 • Trowelling to a Smooth Finish

Covers multi-pass trowelling technique as plaster stiffens to achieve a polished surface. Students develop timing awareness to avoid dragging or tearing the coat.

Lesson 4 • Applying the Finish Coat

Teaches spreading finish plaster in thin, even layers using a steel trowel. Consistent coat thickness prevents differential suction and uneven setting.

Lesson 1 • Ceiling Substrate Preparation

Covers assessment and preparation of plasterboard, lath, and concrete ceiling substrates. Overhead surfaces require additional bonding attention due to gravitational stress.

Lesson 2 • Cornice and Cove Installation

Introduces fixing and finishing plaster cornices and coves at the ceiling-wall junction. Cornices require precise mitering and bedding for a seamless decorative finish.

Lesson 3 • Applying Plaster to Ceilings

Teaches the technique of loading and applying plaster overhead without sagging or dropping. Students adapt trowel angle and pressure for horizontal application.

Lesson 4 • Safe Working at Height

Addresses scaffold board setup, hop-up platforms, and body positioning for overhead work. Safe posture and stable platforms reduce fatigue and injury risk.

Lesson 1 • Fibrous Plaster and Moulding

Covers casting, fixing, and finishing fibrous plaster ceiling roses, panels, and mouldings. Fibrous work requires understanding of mould preparation and reinforcement.

Lesson 2 • Insulated Render Systems

Introduces external wall insulation systems with mesh-reinforced base coat and finish render. Students learn the layered build-up and critical detailing at openings.

Lesson 3 • External Render Application

Covers cement-based and polymer render systems applied to exterior masonry and insulated substrates. External render must resist weather, movement, and impact.

Lesson 4 • Textured and Decorative Finishes

Covers sponge, stipple, drag, and skip-trowel textures applied to finish coats. Textured finishes add visual interest and can conceal minor surface imperfections.

Lesson 1 • Handover and Snagging

Covers the process of snagging, documenting defects, and preparing work for client handover. Professional handover protects the plasterer and satisfies client expectations.

Lesson 2 • Patch and Area Repairs

Covers cutting out, keying, and re-plastering damaged sections to match existing surfaces. Seamless patch repairs require careful feathering and texture matching.

Lesson 3 • Diagnosing Plaster Failures

Teaches systematic diagnosis of cracking, delamination, dampness, and efflorescence in existing plaster. Accurate diagnosis determines the correct repair strategy.

Lesson 4 • Quality Inspection and Standards

Teaches measurement of flatness, plumb, and surface finish against industry tolerance standards. Students use straightedges, levels, and raking light to verify quality.