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Ceiling with VELUX flat roof windows and modern lighting.
Unique needs deserve tailored solutionsDaylight Design Guide for flat roofs

Lean on daylighting insights to support your project needs.

The Daylight Design Guide brings together VELUX daylighting insights, practical rules, simulation tools and technical specifications - supporting you in integrating daylight and ventilation into your projects.
Daycare kitchen area with lime green accents and VELUX flat roof windows.
Person holding tablet with VELUX flat roof window daylight guide at a bright wooden table.

Access technical specifications for your digital workflow

Integrate flat roof solutions with confidence using precise structural cross-sections, BIM/CAD libraries and daylight simulation tools.

  • Detailed cross-sections for concrete, wood, metal and green roofs
  • Daylight simulation with VELUX Daylight Visualizer
  • BIM/CAD files and dimension tables for accurate documentation
Download The Daylight Design Guide
Modern kitchen with yellow cabinetry and skylight.

Daylight Design Guides for specific living spaces

Every space serves different occupants — and different needs. Access targeted lux recommendations and layout strategies for every application:
Living room with flat wooden ceiling and VELUX roof window, stylish decor.

Bedrooms, bathrooms, dining areas

300 lux supports calm, rest and healthy circadian rhythm.
Bedroom with VELUX roof window, natural light and cozy furnishings.

Living rooms & kitchens

Target 500 lux to support visibility, comfort and everyday well-being.
Daycare center with children at tables, large windows, and concrete beams.

Public spaces

Use multiple rooflights to ensure uniform illumination in schools, clinics and halls.

Navigate EN 17037 with architectural clarity

Ensure your projects meet the European Standard for daylight in buildings (EN 17037).

  • Achieve target illuminance levels of 300, 500 or 750 lux across 50% of the work plane area.
  • Learn how to evaluate performance through climate-based simulations or daylight factor methods tailored to your region.
  • Understand why targeted top lighting improves daylight autonomy and distribution compared to façade-only solutions.
Download Design Guide
Children painting in a bright room with a flat roof window.

Your technical reference for designing healthier indoor environments

Download the Daylight Design Guide
Daycare kitchen area with lime green design and flat roof windows.