Interior Linings, Finishing and Fit-out
Domain 5 tests lining selection and fixing, stopping and finishing standards, and the fit-out that follows: trims, doors, cabinetry and wet area finishes. Marks are lost where a lining is treated as decoration rather than as a structural, fire or moisture component.
Linings and fixing
- Board thickness follows the manufacturer's tables and the application: heavier board for ceilings at wide joist centres, moisture-resistant board in wet areas, and tanked systems in showers.
- Fixing centres and screw type come from the fixing table; bracing sheets must follow the bracing schedule's sheet layout and screw pattern exactly.
- Finish levels follow AS/NZS 2589: Level 4 for most painted surfaces, Level 5 where critical or raking light and gloss finishes would reveal framing and joints.
Finishing and fit-out
- Stopping means taping, then three coats feathered wide, with corner reinforcement.
- Fire-rated walls need the specified board, fasteners and tested penetration seals - standard filler in a fire-rated gap is a fail.
- Set out trims from the openings; door linings plumb, square and set to finished floor level; skirting and architrave mitred at external corners.
Worked example
An architect specifies gloss paint in a hallway lit by a skylight. Raking light shows every imperfection, so specify Level 5 and check the framing for straightness and level before lining; correcting the frame afterwards costs far more than fixing it first.
Traps that cost marks
- Cutting a bracing sheet for a power point without an approved alternative bracing design.
- Standard board inside a shower.
- Hanging doors before confirming finished floor level.
- Skipping the pre-line inspection so bracing and flashings are covered up.