Daylighting is the practice of installing windows, or other openings such as rooflights, and reflective surfaces within buildings to allow natural light to enter and spread through rooms and internal spaces.

The amount of daylight building occupants have access to has an impact on their health and wellbeing, and so, has become an important consideration in building design.

There are several design considerations for daylighting provision, including:
• window size, quantity and layout;
• room layout and depth;
• internal finishes, such as reflective surfaces and interior decoration; and
• positioning of exterior obstructions, such as other buildings or trees.

Research from leading building consultants, Peutz B.V., has revealed that by using higher performing insulation within rainscreen and cavity walls, it is possible to reduce construction thicknesses and achieve noticeable improvements in internal natural light levels.

The analysis looks at the change in the average daylight factor (ADF) for a room when premium performance Kingspan Kooltherm insulation is used compared with mineral fibre insulation. For each scenario, comparative constructions were designed to achieve an identical U-value. This required a greater insulation thickness, and consequently wall and reveal depths, for the lower performing mineral fibre insulation constructions. A number of window arrangements were also considered for each scenario.

Daylighting design criteria, such as those outlined in BS 8206-2: 2008 (Lighting for buildings. Code of practice for daylighting), can contribute towards the award of two credits within section Hea 01 of the latest BREEAM assessments.

Kingspan Kooltherm offers a thin insulation solution to meet or exceed daylighting requirements set out in BS 8206-2: 2008, and offers a way to achieve BREEAM visual comfort daylighting credits, by keeping window reveal depths to a minimum to allow entry of more natural light into buildings whilst also achieving or exceeding thermal requirements.

For more information, download the white paper below.

Download the white paper

Daylighting: A White Paper

Read our articles on the topic of daylighting

Kingspan Insulation Ltd

For queries relating to insulation boards, cavity closers or membranes.





General enquiries: 01544 388 601

Technical advice: 01544 387 382

We use cookies on our website To find out more about the cookies we use, or to change your cookie preferences i.e. to remove your consent to our use of certain categories of cookies, please visit our Cookie Policy & Control page.

Please click "Accept and close" to accept the use of cookies on our website. If you do not click "Accept and close" but continue to use this website: you thereby consent to the use of all Kingspan's cookies and third party cookies for the purposes of improving performance, improving functionality and audience measurement, in accordance with the terms laid out in our Cookie Policy & Control page; and we will assume that you have read and understood our Cookie Policy & Control page.

The Cookie Policy & Control and Website Privacy Notice were updated on 13 August 2018.