Articles tagged roof seams. Sellers Roofing — Saint Paul’s family-owned, union-built, GAF-certified contractor — has completed 1,100+ Twin Cities roofs since 2017. 4.8★ on Google.
Good flat roof leak detection starts inside the building, then moves to the roof surface, moisture mapping, and final confirmation testing. White coatings can hide small cracks, failed seams, and wet insulation under a clean-looking surface, so visual checks alone often miss the source. Infrared scans, electronic testing, and moisture probes usually give the clearest…
Short answer: You’ll suspect roof decking rot when your roof system shows ongoing moisture infiltration plus structural “softness.” Inside, watch for recurring ceiling stains, musty smells, or bubbling finishes. On the roof, look for ponding water, failing seams, or spongy areas that flex under safe, limited foot pressure. In Minnesota, freeze thaw cycles and Minnesota…
Short answer: To detect a TPO roof leak at termination bars, start by tracing interior stains to the nearest roof edge or parapet. Then inspect the termination line for cracked sealant, loose fasteners, membrane shrinkage, and wall gaps. Confirm hidden moisture with infrared or electronic testing, because water often travels inside the roof assembly before…
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…
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…
For Twin Cities commercial roofs, TPO vs. EPDM comes down to what you need the roof to do most. EPDM roofing often wins for cold-weather flexibility, proven longevity, durability, and budget-friendly installs. TPO often wins for heat-welded seams, puncture resistance, and lower summer cooling load. The “better” choice is the one that matches your roof…
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,…
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…
Ponding water on a flat roof is rain or snowmelt, often referred to as “standing water”, that sits in low spots instead of draining away. In Minnesota, it becomes a real problem when it stays longer than 48 hours, keeps coming back after normal storms, or pools near seams, drains, and penetrations. A simple ruler…
Commercial TPO leak detection works by combining surface inspection with moisture-mapping tools that “see” what your eyes can’t. Pros look for seam and flashing failures, then use infrared thermography to locate wet insulation patterns and electronic leak detection to pinpoint the exact hole in the membrane. The goal is simple: find the true entry point,…
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