Journal
Notes on linear light.
Specification guides, detailing advice and project insight from The Light Engineers.
Latest guides
Guide · 7 min
What is linear LED lighting? A guide for architects and designers
What linear LED lighting is, the main mounting types, direct vs indirect distribution, and how to specify it for commercial interiors.
Specification · 6 min
Direct vs direct/indirect linear lighting: which should you specify?
How direct and direct/indirect linear LED luminaires differ, and when to use each in offices, education and hospitality.
Detailing · 5 min
Trimless vs trimmed recessed linear lighting
The design, installation and cost differences between trimless and trimmed recessed linear LED lighting.
Bespoke · 6 min
Designing continuous runs, corners and curves in linear lighting
How to plan continuous linear LED runs, junctions, corners and curved sections for architectural and commercial interiors.
Specification · 6 min
UGR19 explained: glare control for linear office lighting
What the Unified Glare Rating means, why UGR19 is the benchmark for offices, and how linear luminaires are designed to meet it.
Standards · 7 min
CIBSE LG7 made simple: lighting offices the modern way
A practical summary of CIBSE LG7 for architects and interior designers, covering wall and ceiling brightness, uniformity and why direct/indirect linear lighting helps.
Design · 5 min
Choosing colour temperature for linear lighting: 2700K to 4000K
How to choose the right colour temperature (CCT) for linear LED lighting in offices, hospitality, education and residential interiors.
Specification · 5 min
CRI explained: why colour rendering matters in design-led interiors
What CRI (Ra) means for linear LED lighting, when to specify CRI 80 or CRI 90+, and why it matters for materials, finishes and people.
Controls · 6 min
DALI vs Casambi: choosing controls for linear lighting
A practical comparison of wired DALI and wireless Casambi lighting controls for linear LED schemes in offices, hospitality and refurbishments.
Sectors · 6 min
Linear lighting for schools, colleges and universities
How to light classrooms, libraries and learning spaces with linear LED lighting: illuminance, glare, controls and durability.
Detailing · 6 min
Suspended linear lighting: heights, spacing and layout
How to set suspension heights, row spacing and orientation for suspended linear LED lighting in open-plan offices and double-height spaces.
Compliance · 5 min
Integrating emergency lighting into linear LED systems
How emergency lighting can be integrated into linear LED luminaires and continuous runs without adding visual clutter to the ceiling.
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