Unit Aim
This unit aims to provide Learners with the knowledge, understanding and skills to evaluate, select and specify materials for interior design projects. Learners explore material properties, sustainability considerations and emerging innovations in the field. Learners develop practical competencies in estimating costs, writing specifications and managing material selection processes. The unit also focuses on effective communication with stakeholders and adherence to regulatory standards.
Unit Content
Know how physical environments influence material selection in interior design.
Physical environment
Indoor air quality and VOC emissions
Health impacts of off-gassing from materials
Low-emission and sustainable material choices
Regulatory standards for air quality
Case studies showing material impact on indoor air
Know the properties, finishes, applications and specifications of paint in interiors.
Components: pigment, binder, solvent, additives
Paint types: oil-based, water-based, low-VOC
Finishes: matte, satin, gloss, eggshell, textured
Colour selection and theory
Application techniques: brush, roller, spray
Surface preparation and layering
Estimating paint quantities
Specification writing: colour code, brand, finish, application method
Know the construction, properties and installation of carpets in interior design.
History and evolution of carpet in design
Functional roles: comfort, insulation, acoustics
Fibre types: wool, nylon, polyester, polypropylene
Construction: woven, tufted, loop pile, cut pile
Dyeing methods: solution dyeing, yarn dyeing
Testing: fire resistance, durability, stain resistance
Estimating materials and roll sizes
Specification: fibre type, backing, pile height
Installation: glue-down, stretch-in, modular tile methods
Know types, uses and specification methods for flooring materials.
Flooring types: hardwood, engineered wood, laminate, tile, vinyl, terrazzo, cork
Applications in residential, commercial, and wet areas
Performance factors: durability, acoustics, slip resistance
Estimating quantities and overage
Writing specifications for finish, substrate, and installation
Know wall finishes and their application in interior spaces.
Wall finishes: paint, wallpaper, cladding, tile, paneling
Functional roles: protection, acoustics, moisture resistance
Decorative roles: colour, texture, feature walls
Estimating material needs: coverage, pattern repeat
Specification writing: materials, adhesives, finish types
Know ceiling materials, systems and their role in interior design.
Ceiling systems: flat, dropped, coffered, acoustic
Materials: gypsum, wood, metal, acoustic panels
Functions: acoustics, lighting integration, HVAC routing
Estimation: ceiling grids, tile counts, panel sizes
Specifications: ceiling type, finish, suspension system
Know cabinet construction techniques and documentation standards.
Joinery methods: dowel, biscuit, dovetail, butt joints
Edge treatments: banding, laminate, solid wood
Drawer systems: framed vs frameless, slide types
Door types: slab, shaker, glass inset
Hardware: hinges, pulls, soft-close systems
Documentation: exploded diagrams, schedules, finish tags
Know material selection and performance requirements for kitchens and bathrooms.
Wet area challenges: moisture, hygiene, durability
Material types: ceramic/porcelain tile, quartz, stainless steel, back-painted glass
Waterproofing: membranes, sealants, grout types
Functional considerations: slip resistance, cleanability
Environmental concerns: water resistance, mould prevention
Specification for wet-area appropriate products
