Articles tagged flat roof issues. Sellers Roofing installs and repairs commercial flat roof systems (TPO, EPDM, modified bitumen) across Saint Paul, MN — GAF certified, union crews (Local 96 Roofers).
Short Answer: To find a commercial flat roof leak at an expansion joint, start by mapping where water shows up inside and when it happens. Then inspect the joint cover, roof flashing, and roof membrane terminations for splits, loose edges, or failed sealant. If it’s still unclear, use controlled testing (low-pressure water, infrared, or electronic…
Yes, ballasted EPDM leak detection can work with electronic leak detection (ELD), but not in a “scan right over the rocks” way. In most real-world cases, crews must move ballast in controlled sections to expose the EPDM membrane, wet this synthetic rubber surface, and then test. If the roof was built with ELD-friendly components, results…
A hidden roof leak in walls usually shows up as subtle changes before you ever see water damage. Watch for water stains near the ceiling line, bubbling or peeling paint, soft drywall, a musty smell, or damp insulation behind the wall. In commercial buildings, leaks often travel far from the roof entry point, so the…
A TPO wall flashing leak, a common roof leak on a flat roof, is usually found by tracing water from the interior stain back to the nearest wall, then inspecting the roof to wall flashing where the TPO membrane turns up the wall. Focus on terminations (termination bars, counterflashing, reglets), corner patches, fasteners, and sealant…
Short answer: Detect an HVAC curb flashing leak by inspecting the curb’s corners, seams, and termination points, then confirming moisture paths with interior checks. Look for cracked roofing sealant, open welds, lifted membrane, rusted fasteners, and ponding that pushes water against the curb. If signs are mixed, use targeted moisture mapping or a controlled water…
A TPO roof leak at HVAC curb corners is found by narrowing the leak path from the interior, then inspecting every curb corner detail on the TPO membrane: welds, flashing, termination, fasteners, and sealant transitions. Finally, confirm the exact breach with controlled water testing or professional methods like infrared or electronic leak detection, because water…
Water stains on ceilings help you narrow the search, but they rarely mark the exact roof leak. Start by confirming the stain is active, then check what sits directly above it (roof deck, drains, HVAC curbs, or plumbing). Next, trace the most likely uphill water path on the roof to find the leaky roof, focusing…
PVC roof leak detection works by narrowing the problem from “moisture intrusion inside” to the exact point where the PVC waterproofing membrane or flashing lets water in. Pros use Electronic Leak Detection, combining surface inspection, seam and flashing checks, moisture scanning (often infrared), and electronic membrane testing to trace the leak’s path, pinpoint membrane breaches,…
Most flat roof leak detection appointments on commercial and industrial roofs take 2 to 6 hours onsite. Simple, visible water intrusion leaks can be traced in 1 to 2 hours, while larger roofs or tricky leaks often need a half day. If the team uses thermal imaging cameras, electronic testing, or moisture mapping, plan on…
Start with a controlled interior-to-roof check: map the wet area inside, match it to the drain line path, then inspect the drain bowl, clamping ring, and membrane at the flange for gaps, cracks, or loose hardware. If the source still isn’t clear, run a low-pressure water test around the drain and document results for targeted…
Commercial EPDM seam leak detection works by combining close seam inspection with moisture mapping tools that can “see” where water traveled under the membrane. Pros look for edge lift, tiny voids in seam tape, fishmouths, and punctures near lap lines, then confirm the source using infrared scans, electronic leak detection, or smoke testing. The goal…
A capacitance meter finds wet insulation by sensing changes in an electrical field across the roof assembly. Because water stores electrical charge differently than dry insulation, wet areas create higher capacitance readings. During capacitance roof testing, a technician scans the roof in a grid, compares readings to a dry baseline, then maps “hot spots.” Final…
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Sellers Roofing Company is your premier Saint Paul destination for expert commercial and residential roofing services, offering comprehensive solutions from storm damage restoration and repairs to new asphalt shingle installations, all with meticulous craftsmanship and an eye for enhancing your property’s safety and aesthetic.