Commercial Roofing in San Antonio, TX

A-Lert Roof Systems designs, engineers, manufactures, and installs commercial metal roofing across San Antonio and the I-35 corridor, handling every stage in-house. With one team responsible from the stamped engineering drawings through the final fastener, a single company stays accountable for the whole project, backed by a 20-year Watertight Warranty. A-Lert has 40+ years in business, 35M+ square feet installed, and 2,500+ clients.

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Commercial roofing services in San Antonio

Roof replacement & new construction. Full standing seam and retrofit systems engineered to your facility’s structural loads, roof geometry, and code requirements. Every project ships with stamped engineering and complete submittals so the architect and general contractor have the documentation they need for coordination and code review.

Roof repair. Common repairs cover leaks, wind-lifted panels, failed flashing, and penetration failures. The most reliable ones start from a documented inspection rather than a guess, which helps keep downtime and cost down.

Preventative maintenance programs. Scheduled inspections with detailed condition reporting make it possible to budget capital repairs ahead of failure instead of reacting to them. That matters most on large roof footprints, where a single missed seam issue can turn into a major loss.

Roof inspections. A documented inspection reviews seams, fasteners, drainage, and coating condition, with photo reporting that stands up in front of ownership or a board.

Metal roofing systems we install

Standing seam (concealed fastener) — Interlocking vertical panels with raised, mechanically seamed joints and no exposed penetrations to fail. Can be roll-formed on site for continuous, lap-free runs.
Retrofit systems — Engineered to install directly over an existing roof, cutting tear-off, disposal, and downtime.
Flat & low-slope systems — Built for warehouses, distribution, and wide-span structures where drainage and ponding control are the priority.
Custom metal panels — Fabricated in-house to your profile, gauge, finish, and color.
Metal wall & ceiling systems — Complementary envelope components from the same team.

One team, from engineering to installation

Most commercial roofing runs through a chain: a manufacturer, a supplier, an install crew, and when something fails, accountability scatters across three vendors.

Because A-Lert engineers, manufactures, supplies, and installs its own systems with no subcontracted fabrication, one company stays responsible from start to finish. In practice, that tends to mean more predictable pricing, fewer change orders, and one point of contact for the life of the warranty, with no gaps between vendors when an issue comes up. The work is backed by a $12M single-project bonding capacity and the financial strength of Centurion Industries, the kind of due-diligence documentation institutional and government buyers often require.

Built for San Antonio’s climate

Commercial roofs here take a specific beating: intense UV, wide daily thermal swings that expand and contract panels, hail, and high-wind events off the Hill Country.

A-Lert’s standing seam systems are engineered for that load, with thermal-movement clips that let panels move without buckling, concealed fasteners that don’t back out over thousands of heat cycles, and high-SRI Kynar 500® PVDF resin-based finishes that cut cooling load on large roof areas.

Industries we serve in San Antonio

Industrial facilities · Warehouses & distribution · Manufacturing plants · Schools & universities · Office & commercial buildings · Government & municipal facilities.

Each gets a system engineered to its conditions — chemical and vibration exposure on industrial sites, temperature stability for storage, and code and procurement compliance for public buildings — rather than a one-size roof.

Why San Antonio facility managers choose A-Lert

40+ years of engineering and installing metal roofing across Texas
35M+ square feet installed and 2,500+ clients served
Single-source: in-house engineering, manufacturing, and installation
20-year Watertight Warranty, backed by $12M single-project bonding
Minimal disruption, phased installation that keeps occupied facilities running

Frequently asked questions

How much does a commercial metal roof cost in San Antonio?

Installed commercial metal roofing generally runs $10 to $16 per square foot depending on system, gauge, slope, and structural requirements. The most reliable number comes from a documented site assessment.

Can you install over our existing roof?

Often, yes. A retrofit system installs over the existing roof when the structure and code allow, cutting tear-off cost and downtime. We confirm viability during the assessment.

Will installation shut our facility down?

No. We phase commercial installations to keep operations running, and schedule around your uptime requirements.

Do you provide stamped engineering and submittals?

Yes, every commercial project includes stamped engineering and full submittals for coordination and code compliance.