Duro-Last is Solar Ready
With the long-term watertight integrity of Duro-Last Roofing Systems, we offer solutions for any rack-mounted commercial rooftop solar application. Custom-fabricated flashings eliminate most rooftop labor from critical areas such as the roof-penetrating support structures that are common for many PV installations. If your current roof needs replacing, and you’re not yet in the market for solar, the Duro-Last membrane enables the application of solar equipment years down the road. It remains weldable and easily accommodates any new penetrations that may be required – whether for solar systems or other rooftop equipment.
Rooftop Solar Systems
Rooftop solar systems that are designed for commercial buildings with flat roofs can be rack mounted (with ballasted or attached racks) or adhered directly to the roof surface. While an adhered solar system will involve fewer penetrations that require flashing, it also restricts access to much of the roof. A rack-mounted system can allow access to the roof, but very secure flashing methods must be used to avoid compromising roof integrity.
Ballasted rack-mounted systems can allow roof access and have a limited number of penetrations that must be flashed, but wind loads, seismic loads, and weight may be issues. Utilizing a rooftop to locate PV is not without risks – one of which is the potential to compromise the waterproof barrier that is the roofing system.
Additional Considerations
With the industry’s highest initial membrane reflectivity, you may achieve a quicker payback of your PV system investment due to energy savings resulting from high reflectivity in roof areas exposed to the sun. Installing high R-value expanded polystyrene insulation under the membrane can provide a payback that’s even faster.
Why Duro-Last?
Duro-Last Roofing Systems are particularly effective for rack-mounted rooftop solar systems. A new Duro-Last roof is precision-fabricated to fit each building, and delivered to the job site with up to 85% of membrane seaming completed in our factory. Custom prefabricated flashings for roof-penetrating support structures eliminate most rooftop labor from these critical areas. Pre-made rack flashing can mean a faster roofing system installation as well.
Solar Roofing Case Study
Learn about how Duro-Last provided a solar-ready roofing solution for the famed Louise M. Davies Symphony Hall in San Francisco, California.
A Sustainable Focus
Being a solar ready roofing material is just one way that makes Duro-Last a sustainable roofing option. Click the button below to learn more about Duro-Last's sustainability efforts.
