Fort Worth's warehouse roofs run 200,000 to over a million square feet. The work is not like standard commercial roofing — it demands production rates, sequencing around loading dock operations, and membrane specs that handle the thermal load of giant uninterrupted decks.

The AllianceTexas industrial park sits about 25 miles north of our downtown office. It is one of the largest master-planned industrial developments in the country, and the warehouse roofing up there is in its own category. Buildings at 500,000 to 1,100, a 40,000 square-foot retail building does. You are managing a crew that can be a quarter-mile from the roof hatch, working in Fort Worth summer heat at 160°F membrane surface temperature, sequencing around dock doors that are open 20 hours a day.

BNSF Railway's Alliance intermodal facility moves freight through that same corridor, which means trucks, rail transfers, and logistics operations that do not stop for a roofing project. The buildings adjacent to BNSF's Alliance yard — the ones feeding directly into the intermodal network — are especially constrained because access roads shift around freight staging. Our project managers walk that access situation before we ever sign a contract.

We run large-deck warehouse work on mechanically attached TPO 80-mil as our standard specification in this corridor. The 80-mil gives us better puncture resistance under rooftop HVAC equipment traffic, longer warranty terms (up to 25 years from manufacturers like Carlisle and Johns Manville), and more margin against the hail exposure that runs through North Tarrant County every spring. Wind uplift on a building that long and that exposed to the northwest wind corridor off the Llano Estacado requires fastener density calculations you do not just borrow from a standard spec sheet.

How We Sequence Work on an Operating Warehouse

Every large warehouse project starts with a sequencing map. We divide the roof field into zones — typically 50,000 to 80,000 square feet each on a million-square-foot building — and assign each zone a start date, an end date, and a crane or material-lift access point that does not conflict with dock door traffic. The building's facilities manager gets a calendar that they can post in their operations center. Dock supervisors know which loading doors are near active work zones on any given week.

Dry-in protocol is non-negotiable on any building that has active inventory inside. We tear off only what we can cover before end of shift. Each zone section gets a temporary single-ply lap fastened before we pack up. On AllianceTexas-scale buildings where the daily production area is large, we maintain a dedicated dry-in crew that follows the main tear-off crew by two hours so there is never an uncovered gap going into sunset.

Night and early-morning shifts are common in this corridor because the summer heat is a real production constraint. Membrane welding quality degrades when ambient temperature climbs above 95°F and the deck surface is radiating heat upward. We schedule membrane installation for 5 AM to noon in July and August, pivot to insulation and substrate prep in the afternoon when the deck is hottest, and bring the welding crew back in the evening if the building's operations allow it.

TPO 80-mil Mechanically Attached — Why This Spec on North Fort Worth Warehouses

Mechanically attached TPO eliminates the adhesive entirely. On a flat metal deck spanning hundreds of thousands of square feet, adhesive application is labor-intensive, temperature-sensitive, and introduces more variables than a facility manager wants on a 25-year asset. Mechanical attachment with FM-approved fasteners and plates at manufacturer-specified pattern density installs faster, performs more predictably under thermal cycling, and is auditable by the manufacturer warranty inspector on a seam-by-seam basis.

80-mil over 60-mil adds less than a dollar a square foot to installed cost on a large project. For a 600,000-square-foot building, that is a meaningful absolute number — but it extends the manufacturer warranty term by 5 years and eliminates a significant category of puncture claims. AllianceTexas buildings see frequent rooftop traffic from HVAC technicians servicing roof-mounted units, and punctures at penetrations and equipment pads are the leading failure mode on 60-mil systems in high-traffic environments.

Tapered insulation design on a warehouse this large requires a civil-level slope-to-drain calculation. We engage our manufacturer's technical representative on every project over 200,000 square feet to verify that the drain layout, the tapered insulation package, and the field-slope plan work together. A warehouse with poor drainage design will pond water at mid-field on a 1,000-foot run, and ponding at that scale accelerates membrane degradation in ways that void the warranty.

Scoping a Fort Worth warehouse roof replacement?

We will walk the full deck, produce a sequencing plan that works around your loading operations, and deliver a scope with manufacturer warranty path and production schedule.