We also inspect rooftop HVAC curbs and penetrations, since equipment mounts are a common overlooked source of flat roof leaks.


Our Flat Roof Repair technicians are trained specifically on membrane systems, not general shingle repair applied to a low-slope roof.
Commercial Flat Roof Repair scheduling is built around minimizing disruption to your Grinnell business operations.
Insurance documentation available before work begins on any Grinnell commercial property.
Local Grinnell dispatch minimizes business disruption with scheduling around your operating hours.
Membrane type and repair scope are itemized separately in every Flat Roof Repair estimate.
Hot-air welding equipment ensures a proper bond on every TPO Flat Roof Repair repair.
Most Grinnell flat roof issues combine two or three of these elements, which is why a full inspection matters.
We test repaired seams for a proper bond before considering the Flat Roof Repair job complete.
We identify the membrane type first, since EPDM and TPO repairs use different adhesive systems.
Standing water that doesn't drain within 48 hours accelerates membrane breakdown and needs a drainage fix, not just a patch.
We assess whether a modified bitumen repair needs a patch or a full section replacement.
Clogged or damaged drains are a leading cause of Grinnell flat roof ponding and membrane stress.
We reseal and reflash equipment curbs as part of a thorough Flat Roof Repair inspection.

We start by discussing the issue — ponding, active leak, or visible membrane damage.
A technician inspects the membrane system, checking seams, drains, and any ponding areas.
You receive a written estimate covering membrane repair or drainage correction before work begins.
Repairs are completed using membrane-appropriate technique, then tested before we consider the job done.

They tested the seam repair with water before considering the job done.
— Grinnell Homeowner
Scheduled around our tenants' business hours without us even having to ask.
— Grinnell Homeowner
EPDM patch job from another company had failed within a year. Theirs has held up fine since.
— Grinnell Homeowner
They caught a second smaller leak while fixing the one we'd actually called about.
— Grinnell Homeowner

We prioritize active leak calls first during high-demand periods across Grinnell.
