The roof has to outlive the array

A commercial PV system is engineered to produce for a quarter century. The membrane it sits on may have a fraction of that left. That mismatch is the single most common way solar projects go sideways on the Wasatch Front, and we see it constantly on buildings around the I-15 logistics belt in West Valley City, the office product clustered along the Silicon Slopes stretch through Lehi and Draper, and the warehouse stock in Salt Lake City's northwest quadrant near the airport. An owner signs with a solar developer, the array goes up, and four winters later the roof beneath it fails. Now the panels have to come off, get stored, and go back on around a tear-off that should have happened first. The reroof costs what it was always going to cost, plus a detach-and-reset bill that can run into five figures.

We don't let that sequence start. Our role on a solar project is to verify the roof can carry the commitment before any contract gets signed, and to detail the work so the array goes on without compromising the deck or the coverage.

Start with a core and an honest number

Before you talk attachment plans or production estimates, you need to know what you're building on. We cut cores through the existing membrane and insulation, check for moisture in the assembly, look at seam and flashing condition, and give you a written remaining-service-life estimate. That number drives everything. Fifteen-plus good years and installing on the existing roof is defensible. Seven or fewer and we'll tell you plainly to reroof first, because paying to lift and reset an array later almost never pencils out against doing the membrane now while the roof is bare.

This is a conversation we'd rather have with you than with your solar contractor's spreadsheet. The developer's job is to size and sell a system; ours is to make sure the surface under it is sound. Those interests don't always line up, and having an independent read on the roof protects you.

Every racking foot is a roofing detail

Wherever a racking stanchion, a conduit support, or a combiner stand meets a low-slope roof, there's a path for water. Solar crews are skilled electricians and mechanical installers, but flashing a penetration so it survives Salt Lake City's freeze-thaw cycling is roofing work, and the two trades have to settle ownership of each detail before anyone drills. We walk the proposed array with the solar EPC and mark which attachments penetrate the membrane and which ride on ballast.