Solar & Sustainability
Solar PV and energy retrofits on commercial, institutional, and historic buildings — integrated with the roof. We work closely with PV contractors to install a quality watertight application.
Roofing and energy systems.
Solar PV is a roofing project as much as an electrical project. F.J. Dahill coordinates with PV providers on commercial and institutional buildings, coordinating the electrical, structural, and roofing scope so the systems work together and the warranties hold.
Every solar & sustainability capability we offer.
Solar PV Installation
Commercial-scale solar PV installation on flat and low-slope roof assemblies.
Roof-Integrated Systems
Solar systems specified and installed to maintain manufacturer roof warranties.
Re-Roof + Solar Programs
Coordinated re-roofing and solar installation, sequenced so the roof is replaced before the panels go on.
Energy Audits & Retrofits
Building envelope assessment for energy retrofit programs — insulation, air sealing, and waterproofing improvements.
Historic Building Solar
Discreet solar installation on historic buildings where preservation review applies.
Maintenance & Repairs
Ongoing maintenance of solar arrays and roof systems for institutional and commercial owners.
How we deliver solar & sustainability projects.
Roof first, then solar
We only recommend the installation of solar on a roof that's ready. If the roof has fewer years left than the solar warranty, we recommend re-roofing first.
One team, one warranty
Roofing and solar under one contract means no finger-pointing if there's ever an issue. We stand behind the whole system, not just our piece of it.
Built to work together
We coordinate the structural, electrical, and roofing scope from day one, so the solar installation and the roof underneath it are designed as one system — not two contractors working around each other.
Recent solar & sustainability work.
Project names and photos to be confirmed by client.
Often paired with solar & sustainability.
Have a solar & sustainability project?
Tell us about your building, your timeline, and your operational constraints. We will respond in a timely manner.