Commercial Flat Roof Daylighting Solution

The Velux Commercial Sun Tunnel for a Commercial Flat Roof

Getting cost-effective daylighting into a commercial building can be a challenge, especially when most have a commercial flat roof. Velux Commercial Sun Tunnels are a great potential solution.

Why Velux Sun Tunnels?

The Velux SunCurve diffuser is designed to capture light at all times of the day and reflect it down the shaft, giving you ample daylight dawn dusk.

Velux Sun Tunnels have a variety of parts and accessories to work with whatever needs your location might need; from forced entry protection, A, B, or C fire classifications, to a daylight controller for room darkening.

Sun Tunnel Parts and Accessories.

Velux also provides the best warranty, giving you peace of mind.

Ideal Applications

Velux Commercial Sun Tunnels were created for commercial flat roof applications, no matter the material. They work best over areas that can benefit from natural daylight, and help reduce energy loads and improve the comfort and performance of employees, guests, or customers.

Open Ceiling Sun TunnelSchools, retail spaces, warehouses and office locations benefit the most from Velux Commercial Sun Tunnels. They provide a very cost-effective way to bring in daylight through the roof. Even greater cost savings can be attained with open ceiling applications.

Lakewood Mall Retrofit with Quadwall

Los Angeles area mall reduces glare and daily energy expenditure with CPI Daylighting’s Quadwall® panels

Bright spots, dark patches and solar heat gain plagued suburban Los Angeles’ Lakewood Center for decades, causing a rise in the mall’s HVAC costs and energy expenditure. In 2010, the then 60-year-old mall began a 4-phase renovation over the next four years that would replace 42,000  square feet of ageing plexiglass skylight with CPI Daylighting’s Quadwall® panels.

The number one advantage of the Quadwall is that there’s an insulating factor between the outside and the inside, which helps the climate control inside the mall because the right temperature can be maintained using less HVAC, since the renovation, we’ve cut the run time of the AC units by four hours per day!

Scott Cleveland, Operations Manager, Lakewood Center, Lakewood, CA

The skylights were installed 25 years ago when the roof was first put on the once open mall, but had leaked and cracked over time, holding a U-value of .73 when replaced. By contrast, the new CPI Daylighting Quadwall panels have a .22 U-value.

An assembly of two independent translucent insulated panels, the Quadwall system provides indefinite building envelope protection with its Removable Skin Technology (RST) that allows the exterior panel to be removed while still maintaining the integrity of the interior panel. Joined by a mechanically interlocking connection, the dry-glazed Quadwall system eliminates the need for vulnerable adhesives, adding durability, as well as even light distribution with the system’s tight-cell technology. Specified for Lakewood Center in 10 mm ice white matte exterior over 8 mm ice white matte interior, the two panel Quadwall system is an integrated, high-performance daylighting system.

With the Removable Skin Technology, we won’t have the same type of replacement challenges, plus the strength of the panel and the way it’s built makes a big difference too. In the long run, because of zero maintenance and CPI Daylighting’s warranty, costs should be very low on the maintenance side of it.

Scott Cleveland, Operations Manager, Lakewood Center, Lakewood, CA

Scalable, the Quadwall system can be configured with additional insulation, UL-rated Class A or B fire rated roof assembly, sound reduction, dynamic shading, additional structural performance or even military forced entry resistance as well.

Today, visitors to the Lakewood Center enjoy an enhanced shopping experience, as high quality light streams through the new CPI Daylighting Quadwall panels.

I definitely see a difference in the way the interior light looks from the old skylight to the new Quadwall. It’s much brighter without any glare. Now, that’s what we were looking to achieve!

Scott Cleveland, Operations Manager, Lakewood Center, Lakewood, CA

NREL Technical Daylighting Report

A Literature Review of the Effects of Natural Light on Building Occupants

Daylighting report on the effects of daylighting in offices, schools, retail and industrial locations.

Occupants in daylit and full-spectrum office buildings reported an increase in general well being. Specific benefits in these types of office environments include better health, reduced absenteeism, increased productivity, financial savings, and preference of workers.

Franta and Anstead-1994

Daylighting Study Reports by Heschong Mahone Group

Daylighting Reports for Offices, Schools and Classrooms, Retail Sales and Human Performance

The attached link below lists six Daylighting Reports:

    1. Windows and Offices
    2. Windows and Classrooms
    3. Daylight and Retail Sales
    4. Daylighting in Schools – PG&E 1999
    5. Daylighting in Schools – Additional Analysis
    6. Skylighting and Retail Sales – PG&E 1999

 Skylights were found to be positively and significantly correlated to higher sales. All other things being equal, an average non-skylit store in the chain would be likely to have 40% higher sales with the addition of skylights