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Building Products January 2018

DOORS, WINDOWS AND ACCESSORIES BRINGING LIGHT FROM ABOVE Daylight has become a fundamental element of our built environment; the primary light source in new and refurbished buildings and a cost-effective means of reducing the energy for electrical lighting. With rooflights providing three times more daylight than the same area of vertical glazing, specifiers need to take a few simple steps to find the best rooflight product that will meet their requirements. Here, Tony Isaacs, Brett Martin Daylight Systems national sales manager – commercial, offers a three-step approach to rooflights. Manufacturers work hard to launch new products regularly, with an option available for whatever the requirement may be. This has resulted in an infinite variety of rooflight shapes, sizes, colours and glazing options to suit flat, pitched and curved roof applications. Irrespective of the number or extent of rooflights required for residential, commercial, industrial or agricultural structures, if the basics are followed the process can be as easy as one, two, three: design and specification, a market leading manufacturer and finally installation. Getting the design right The choice of daylighting holds the key. With so many options available, the early involvement of 32 BUILDING PRODUCTS | JANUARY 2018 a rooflight manufacturer or daylight consultant at the design and specification stage of a project is critical, as they can provide good advice and influence the right rooflight decision. This could be in terms of the rooflight area required, energy saving or ventilation options, as well as ensuring the most appropriate product is chosen for the individual requirements of a particular project. Working together during this time will ensure all requirements and benefits are achieved. A part of this requirement is meeting current legislation but it is also about meeting budgets while at the same time, choosing the best product for the application that is quick and easy to install. This is not always an easy task when regulations need to be adhered to. Smoke extraction, airtightness, U-values, solar gain, wind-loadings and watertightness are just some of the many considerations and requirements. It is therefore important to work with a rooflight manufacturer that can demonstrate, support and back-up their product’s performance and technical claims. Meeting requirements Compliance with the differing national regulatory frameworks must be considered, with rooflights subjected to mandatory legislation and standards covering key performance factors including fire, thermal insulation, safety, and in certain applications, security. Care should be taken to ensure that any specification and installation meets the relevant standards, with a hierarchical approach often best practice.


Building Products January 2018
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