On stairs the decorative fitting must support an even, glare-controlled view of treads, risers, landings and changes of direction.
Start with the problem, not the product photograph
Position, mechanical load and electrical connection must be solved separately. For Stairway lighting with Tiffany fittings, use a mock-up for placement and qualified judgement for the installation.
Photograph the proposed position straight on and from the side. Record the full dimensions, lampholder, bulb, connection method and the main task. A close product image rarely shows room scale, door movement or the angle from which a bare bulb becomes visible.
Three distinct decisions
1. Decide the job before the style
Plan continuous light and accessible control rather than repeating one wall light at visually equal but functionally poor intervals.
Keep this evidence: write the main task and the one constraint that could rule the fitting out.
2. Measure the real fitting envelope
Map tread edges, landings, switch or sensor positions, projected fittings and safe access for maintenance.
Keep this evidence: record every dimension from one named reference point and photograph the tape measure in place.
3. Test the result from normal positions
Walk up and down at normal speed after dark; confirm every edge remains legible and no direct source masks the next step.
Keep this evidence: repeat the check by day and after dark, using the bulb and furniture layout you expect to keep.
Worked calculation
Lighting uniformity comparison
U = Emin ÷ Eavg
Variables: U is a simple uniformity ratio, Emin is the lowest measured lux and Eavg is the average of the measured points.
Example: If step readings average 120 lux and the darkest point is 48 lux, U = 48 ÷ 120 = 0.40. Use the result to find dark gaps, not as a substitute for code assessment.
The calculation gives a planning check, not an installation approval. Confirm the maker’s dimensions, use a full-size mock-up and let the appropriately qualified person decide structural and fixed-wiring details.
A real TiffanyLight.co.nz product as the worked case
20 cm Tiffany-style stained-glass wall light
A shallow wall fitting used to check projection, side glare, door movement and stair or hallway sightlines.
This model demonstrates the method; it is not an automatic recommendation. Draw its complete dimensions, verify the current electrical specification and test the proposed light in the real room. Product details can change, so check the live page before buying.
Confirm on the product page: total dimensions, weight, voltage and connection, lampholder, maximum wattage, included parts and installation conditions.
Practical New Zealand home scenario
Draw the complete fitting and verify the mass of every hanging part. Give the current product information, support material, dimensioned sketch and photographs to the licensed electrical worker. After installation, check stability, control operation, clearance, glare and safe future access.
Common mistakes
- Selecting a fixing without identifying the support material.
- Counting only the glass shade’s weight.
- Energising an uncertain import or altering fixed wiring without appropriate expertise.
Final checklist
- Support material and total weight are known.
- Volume and clearance are tested.
- Instructions and electrical ratings are available.
- A safe service route is planned.
- Fixed electrical work is handled appropriately.
Record sheet: model, complete dimensions, total weight, voltage and connection, lampholder, chosen LED, position, mock-up photograph and check date. The current product information and maker’s instructions take priority over general guidance.