Commercial Roof Leak Investigation
A Downtown Arlington tenant may report a stain near the same wall after each storm, even though the flashing above it was already patched. Treat the prior repair as evidence. Establish whether the new water appeared during driving rain, after HVAC operation, or after a dry interval so the field team can test the most plausible sources first.
Build a timeline from the people in the space
Ask for timestamps, room photos, and when ceiling or mechanical work was last done. At an I-20 retail building, identify whether adjacent suites experienced water at the same time. Compare those observations against roof drainage, parapet details, equipment curbs, and wall interfaces before defining a repair test.
Confirm the result under useful conditions
A controlled test may help isolate a detail where site conditions permit it. Document the sequence, the part of the assembly observed, and any condition the visit could not reproduce. After corrective work, have the tenant record what happens during a similar rain or equipment cycle.
Account for HVAC and roof work on the same timeline
Ask the mechanical team whether an equipment drain, curb, or service opening was changed near the affected space. Identify whether a roofer, mechanical vendor, or another trade needs to attend the next diagnostic visit. Record who will confirm the source and which interior access must be available during the test.
Arlington market coverage
Leak diagnosis for commercial roofs and building interfaces in Arlington retail, industrial, and mixed-use properties.





