How Often Should You Inspect a Commercial Roof in Dallas? (2026 Guide)

The DFW Commercial Roof Inspection Schedule

Here's the deal — every commercial building in Dallas-Fort Worth should get its roof inspected at minimum twice a year. Once in spring, March or April, after the ice storms and freeze-thaw cycles of winter have done whatever damage they're going to do. Once in fall, September or October, before you head into winter. And then after every hailstorm, every high-wind event over 60 mph, and any heavy rain that dumps more than 2 inches in a short window. DFW averages 3–5 significant hail events a year. That's 3–5 additional inspection triggers on top of your twice-annual baseline.

We see building owners skip these inspections all the time — not out of negligence, just because nobody ever explained how quickly a small issue becomes a big one. A seam lifting on a TPO membrane that gets caught in April costs $200–400 to fix. The same seam, ignored through a DFW summer, lets moisture into the insulation and that's now a $15,000 problem minimum. The inspection is free. The delay isn't.

What a Real Commercial Roof Inspection Covers

A walking inspection from a qualified roofer covers the basics: membrane condition (blistering, cracking, seam integrity), flashing at all wall terminations and penetrations, drain and gutter performance, HVAC unit curb seals, ponding areas, parapet wall caps, and roof edge details. That's the minimum.

What a walking inspection can't find is moisture that's already trapped under the membrane. The roof can look fine from the surface and have wet insulation in three sections that's been sitting there since last spring. That's what thermal imaging is for. Our drone inspections add infrared scanning that maps temperature differentials across the entire roof plane — wet insulation holds heat differently than dry, and the drone sees it. Landry's crew caught a moisture intrusion problem on a retail building off 380 near Prosper that the previous two inspections had completely missed. It was already affecting the deck by the time we found it.

What It Costs to Skip Inspections

A commercial roof leak that gets caught early is a few hundred bucks. The same leak that goes unnoticed for a season damages inventory, equipment, and tenant space — we're talking $50,000–$200,000 in total losses when you add it all up. Insurance companies are getting smarter about this. More and more carriers are requiring documented maintenance records to honor claims. No inspection records means they can argue the damage was pre-existing and deny the claim. We've had clients call us after that exact scenario. It's not a great conversation to have.

What to Look for by Roof Type

Different systems fail in different ways, and your inspector needs to know which one they're looking at. TPO and PVC: focus on seam welds — that's where they fail first, especially on roofs that see a lot of thermal cycling. EPDM: check adhesive seams and edge terminations, particularly if the roof was ballasted. Modified bitumen: look for blistering and alligatoring on the cap sheet. Metal: fasteners, sealant at laps, and panel overlap integrity. Built-up: gravel coverage and membrane splits at low spots. A generic inspector who doesn't ask what system you have before they go up there is not giving you a real inspection.