How Long Does a Commercial Roof Replacement Take in Dallas?

Timeline by Building Size

The size of the project is the first variable. Small buildings under 10,000 sqft — small offices, retail tenants — typically run 3–7 days with a full crew. Mid-size: 10,000–50,000 sqft, think warehouse or multi-tenant retail, runs 2–4 weeks. Large warehouses and distribution centers in the 50,000–100,000 sqft range take 4–8 weeks. Data centers and mega-warehouses at 100,000+ sqft are 8–16 weeks. All of these assume standard TPO or EPDM installation with reasonable weather and no major surprises under the existing membrane.

We always tell clients: the number we give you before we start is a target, not a guarantee. The deck can hide surprises that the thermal scan didn't catch — rotten plywood, rusted steel decking, saturated sections that have to come out and dry before we can put new membrane down. We had a 40,000 sqft warehouse job off 114 near Roanoke where the decking issues added a full week to the timeline. Better to know that upfront than to be caught off guard when it happens mid-project.

What Actually Moves the Timeline

Weather is the biggest wildcard in DFW. Rain delays add 1–3 days per event, and you can't apply membrane on a wet deck or in active rain. Tear-off vs. overlay matters a lot — if you're tearing off an existing system, add 30–40% to the timeline versus an overlay. Wet insulation replacement requires drying time that can stretch a project significantly. Penetration count — HVAC units, pipes, drains — each one takes time to properly flash and seal. Occupied building requirements add noise and access restrictions. And specialty membranes can have 2–4 week lead times if they're not in stock locally, so material procurement timing matters.

The material lead time issue catches a lot of building owners off guard. Landry got a call last spring from a property manager in Frisco who needed a job done in two weeks — they'd been sitting on a failing roof for months and suddenly it was urgent. The membrane they needed had a three-week lead time. Planning ahead by even a few months gives you flexibility. Emergency sourcing always costs more and almost always means substitutions you didn't ask for.

Phased Installation for Occupied Buildings

Hospitals, data centers, and occupied offices can't just shut down for three weeks while we put on a new roof. We use phased installation for those — one section at a time, maintaining a watertight seal on every unfinished area before we leave for the day. This approach adds 20–30% to the timeline, but it means zero business interruption. We coordinate work hours around your operations: early starts, night work, weekend installations when the timing calls for it. The planning conversation is the critical part — we need to know what's happening inside the building and when before the first piece of membrane comes off.