Interior Materials & Construction I

What interior materials and construction covers — selecting, specifying and detailing the surfaces, substrates and soft goods of an interior; classification of materials (by origin, by role, by processing state); the properties that drive selection — physical (density, moisture movement), mechanical (strength, hardness, screw-holding), and aesthetic/functional (appearance, fire behaviour, maintenance, cost, sustainability); the selection checklist; and how material choice drives construction and detailing.

The named interior elements and how they are built — partitions (masonry, stud/drywall, glass, ply), false ceilings (grid, gypsum board, POP), flooring (overview), panelling; and the vocabulary a designer must know — skirting, dado and the dado rail, cornice, architrave, the door and window members (frame, shutter, stile, rail, mullion, transom), and the handrail/baluster/balustrade/newel of a stair — plus how to read product literature.

The core unit — the materials an interior designer specifies. Wood: softwood vs hardwood (botanical, not hardness), good timber, defects, seasoning, and the board family (plywood, blockboard, MDF, particleboard, veneer) with their grades (IS 303/710, MR/BWR/marine); cane and bamboo. Glass (float, toughened, laminated) and the float process. Plastics; gypsum (board vs cement board); metals as finishes (mild steel, stainless 304 vs 316, aluminium, brass) and their finishing; laminates (HPL) versus veneer; and fabrics (textile, jute, leather).

Building a material / sample board from real, market-available samples — sourcing swatches and offcuts, composing a coherent dominant/secondary/accent palette (not a random swatch grid), labelling each sample fully (material, brand and grade, size and finish, IS reference, application), and presenting it with a specification rationale; plus small-scale physical models to test a detail or a build-up. The difference between a mood board and a material board.

The industrial / live-site visit — observing interior components being assembled: partition studwork, the false-ceiling plenum and its services coordination, flooring substrates and wet-area detailing, and how skirting, dado, cornice and architrave junctions terminate; the sequence of trades (services first, then boarding, then finishing); and how to document a site (dated log, measured sketches, annotated photographs) and connect what is built to the taught nomenclature.