Viewing distance (workmanship)
Viewing distance for assessing residential workmanship defects is 6.1 m in diffused light. Defects invisible at this distance are typically not workmanship defects.
Ask Chalkline about this →The viewing distance in residential workmanship guides is the standard distance from which masonry, plaster, paint, and other visible finishes are assessed for defects: 6.1 metres in diffused light. Defects that are visible at less than 6.1 m but not at 6.1 m are typically NOT workmanship defects under the relevant standards (AS/NZS 2589:2017 for plasterboard, HIA Guide to Standards and Tolerances for general finishes). The viewing distance, combined with diffused (not raking) light, is the test that distinguishes a workmanship defect from a personal preference issue. Verified per AS/NZS 2589:2017 and HIA Guide (2026-05-16).
The viewing-distance test (residential):
| Step | What you do |
|---|---|
| 1. Light | Use diffused natural daylight or general room lighting. NO direct sunlight, NO raking light from grazing angle |
| 2. Distance | Stand 6.1 m (approximately 20 ft) from the surface |
| 3. Inspection | Look at the surface with normal eyesight (corrected if you wear glasses) |
| 4. Time | Take a reasonable look, not a forensic scan |
| 5. Defect call | If a defect is visible at this distance with this light, it is a workmanship defect; if not, it is acceptable |
This is the standard used in Australian residential dispute resolution: NCAT, QCAT, VCAT, NSW Fair Trading, QBCC. Owners arguing that a “defect” they spotted with a torch at 1 m is unacceptable will be told that the legal test is 6.1 m in diffused light.
Why 6.1 metres?
The distance evolved from US gypsum-finishing standards in the 1960s and migrated to AS/NZS 2589 in Australia. The reasoning:
- Realistic viewing: a typical occupant standing in a room views the wall from a normal distance, not nose-to-the-wall.
- Eliminates micro-defects: every wall has minor imperfections; the test focuses on what’s actually visible to a normal occupant.
- Industry-standard: a single distance avoids subjective “how close is too close” arguments.
Light condition matters:
| Light type | Effect |
|---|---|
| Diffused (the standard) | Standard daylight or overhead room lighting; shadows are soft |
| Raking (grazing angle, e.g. side lamp) | Highlights every surface irregularity; not the workmanship test |
| Direct sunlight | Like raking; can shadow surface texture |
| Single bright spotlight | Same as raking |
When an inspector finds defects in a raking light, the standards require re-assessment under diffused light at 6.1 m. Defects only visible under raking light are usually acceptable workmanship.
Tolerance applied at the viewing distance:
| Surface | Acceptable tolerance at 6.1 m (typical) |
|---|---|
| Level 4 plasterboard finish (paint over) | Hairline visible flaws acceptable; no banding or photographing |
| Level 5 plasterboard finish (premium, gloss paint or specific applications) | Stricter; defects not visible at 3 m acceptable |
| Cement render finish coat | Uniform colour and texture; no patching visible at 6.1 m |
| Paint finish | No flooding, no roller marks, no holidays visible at 6.1 m |
| Brickwork | Mortar joints uniform; no obvious bricks out of plane |
Common defects that DO meet the workmanship threshold:
- Cracks > 0.3 mm visible at 6.1 m.
- Paint runs and sags.
- Uneven texture across a single wall (banding, photographing).
- Misaligned bricks or out-of-plane joints visible from across the room.
- Stain or mark visible from normal distance.
- Visible flooded paint applications.
Common “defects” that don’t meet the threshold:
- Hairline cracks visible only with a torch.
- Surface texture visible only under raking light.
- Minor variations in plaster texture visible at less than 3 m.
- Slight colour banding visible only at angled light.
- Small repair patches that have been properly finished and are not visible at the standard distance.
Builder takeaway:
Document the inspection method when you do a pre-handover walk-through with the owner: “Assessment under AS/NZS 2589 / HIA Guide: viewing distance 6.1 m, diffused light.” This sets the legal benchmark and stops scope creep from spotlit-at-30 cm “defects”.
Also known as: 6.1 m viewing test; standard inspection distance; AS/NZS 2589 viewing distance; HIA inspection distance.
Category: Inspection.
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Last updated: 2026-05-16. Verified: 2026-05-16. Quarterly review for currency.