For building owners, GCs and architects
Commercial Metal Roofing for Dallas Builders and Owners
Permanent Metal Roofing Systems forms and installs mechanically seamed standing seam, snap lock, PBR panels and edge metal on commercial buildings across DFW, using our own crews. For every roof we install, we also prepare the submittal package your review team expects.
- 20+ years of experience
- Lifetime limited warranty
- Free written estimates
Commercial metal roofing at a glance
- Best for Schools, hospitals, hotels, shopping centers, airports and military facilities
- Systems Mechanical lock standing seam, 2-inch structural panel, snap lock, PBR, coping and edge metal
- Minimum slope 1/2:12 mechanical lock; 3/12 snap lock
- Metals 22 to 26 gauge steel, .032 and .040 aluminum, copper, zinc
- Finish PVDF with a 40-year finish warranty on standard colors; Tedlar and SMP options
- Warranty Optional third-party weather-tightness warranty on mechanically seamed systems, purchased by the owner
What commercial metal roofing does PMRS install?
We install complete commercial metal roof systems in Dallas and across the Metroplex: panels, clips, underlayment, coping, edge metal and flashing, all formed or bent in-house and put on by our own crews. Owners hire us for the finished roof, and general contractors bring us in as the metal roofing subcontractor.
The commercial buildings we work on include schools, hospitals, hotels, shopping centers, airports and military facilities. They share the same needs: long panel runs, low slopes, careful submittal reviews and warranties an owner’s team will actually read.
Our edge is control. Panels are formed to the length of each run, and coping, gravel stop, fascia and flashing are bent on computerized folders and tagged for their place on the roof, so every detail stays consistent from the first sheet to the last.
Which commercial roof systems do we install?
Most commercial jobs use one of four panel families, finished and trimmed to the building’s details.
Mechanical lock standing seam
Double-lock 180-degree seams for slopes as flat as 1/2:12. Seamed to specification, these systems can carry an optional third-party weather-tightness warranty that the owner purchases.
2-inch structural mechanical lock
A structural panel designed for pre-engineered metal buildings, able to span open framing as well as a solid deck.
Snap lock for steep slopes
Architectural panels for mansards, canopies and roofs at 3/12 and up, with a seam that carries cleanly onto fascia.
PBR and ribbed panels
Exposed-fastener PBR, RPBR and 7.2 rib roofs for warehouses, shops and agricultural buildings where budget leads.
Coping, edge metal and flashing
Parapet coping, gravel stop, reglets and transitions bent in our shop to the exact profile your details call for.
How do you roof a low-slope commercial building with metal?
Use a mechanically seamed standing seam panel over high-temperature underlayment, held by clips that let the panels move. On our mechanical lock systems that combination is rated down to 1/2:12.
The seamer turns each joint either 90 degrees (single lock) or a full 180 (double lock), and the 2-inch panel adds a 45-degree option. The double lock gives the most water resistance on the flattest slopes. The 1-inch and 1.5-inch panels need a solid deck; the 2-inch panel can also span open framing.
Thermal movement separates quiet roofs from noisy ones. Over a 100-degree temperature swing, a steel panel 100 feet long grows or shrinks about three-quarters of an inch, and aluminum moves roughly double that. Floating clips let the panel slide, and stiffening ribs and clip relief keep the flat of the panel calm.
Panel options for commercial projects
| Panel | Seam | Panel width | Minimum slope | Deck | Metals |
|---|---|---|---|---|---|
| 1-inch mechanical lock (light duty) | 1 inch, 90 or 180 degree | 12 to 20 in | 1/2:12 | Solid deck | 26 and 24 ga steel, .032 aluminum, 16 oz copper, zinc |
| 1.5-inch mechanical lock (heavy duty) | 1.5 inch, 90 or 180 degree | 12 to 20 in | 1/2:12 | Solid deck | 26 and 24 ga steel, .032 aluminum, 16 oz copper, zinc |
| 2-inch mechanical lock (structural) | 2 inch, 45, 90 or 180 degree | 12 to 18 in | 1/2:12 | Solid deck or open framing | 22 to 26 ga steel, .032 or .040 aluminum, 16 or 20 oz copper, zinc |
| 1.5-inch snap lock (medium duty) | 1.5 inch snap seam | 12 to 20 in | 3/12 | Solid deck | 22 to 26 ga steel, .032 or .040 aluminum |
| 1.75-inch snap lock (medium duty) | 1.75 inch snap seam with factory sealant bead | 12 to 18 in | 3/12 | Solid deck or open framing | 22 to 26 ga steel, .032 or .040 aluminum |
Where a specification calls for air and water testing, the 1.75-inch snap lock and the 2-inch mechanical lock get seam sealant. On slopes of 3/12 and under, the 1-inch and 1.5-inch mechanical lock panels go over Pro HT high-temperature underlayment.
Why specify the 2-inch mechanical lock on a pre-engineered building?
Because it was designed for that job. The PMRS 2-inch panel is a structural roof for pre-engineered metal buildings, and its heavy-duty interlock clip secures the panel while still letting it expand and contract.
The panel data describes its single-lock seam as the industry’s most extensively tested design, with more than 50 years of field history. Panels run 12 to 18 inches wide, and we form it in steel from 26 down to 22 gauge, .032 and .040 aluminum, copper and zinc.
Re-roofing an existing metal building? Ask for site-specific engineering, which lets us check clip spacing against the purlins you already have. Our commercial re-roof warranty guide explains what to ask for before you bid.
Which finishes last longest on a commercial roof?
Most commercial roofs we install are finished in PVDF, made with Kynar 500 or Hylar 5000 resin, and the coil coater warrants our standard PVDF colors for 40 years. Tedlar PVF film goes further on chemical and stain resistance, and SMP is the budget option for light colors on utility buildings.
Tedlar is a DuPont polyvinyl fluoride film laminated to the metal rather than sprayed on. It shrugs off chemicals, stains and graffiti as well as UV, which suits schools, hospitals and high-traffic buildings; its finish warranty term comes from the supplier and depends on color and metal. Compare all three finishes and browse colors on the color chart.
What did a PMRS retail roof involve?
A steep-slope retail building shows how finish and edge details come together. Every slope was steeper than 3/12, so we used a 1.5-inch snap lock panel formed from .032 aluminum.
The finish was matte black Tedlar, chosen to hold its color for decades in full Texas sun, and the rake and eave trim were bent from the same laminated stock so the edges read as part of the roof.
What do general contractors and architects get from PMRS?
One subcontractor that estimates, details, forms and installs the metal roof scope with its own crews. Every document below is prepared for a roof we install.
- Installed-scope pricing from your plans and specifications
- Submittal packages with panel data, finish data, colors and underlayment data
- Shop drawings of the roof we will install, for architect and engineer review
- Project engineering and site-specific calculations on request
- Closeout records, finish documentation and warranty paperwork for the owner’s files
Our installation process page shows how a roof moves from deck prep to final inspection.
How does DFW weather change a commercial roof spec?
Wind and hail drive most of it. A North Texas roof should be detailed for uplift at edges and corners, for hail that comes nearly every spring, and for a wide temperature swing.
The May 28, 2024 storm brought winds near 80 mph to the metro and ripped roofs off buildings, and during the March 2025 outbreak, 90 mph wind brought down a warehouse wall in Richland Hills. Edge metal, clip spacing and seam type are where uplift resistance is won or lost.
Heat cycling never stops. Most years bring roughly twenty 100-degree days, yet in January 2024 temperatures stayed under freezing for 89 consecutive hours. Long panels need floating clips, and long coping runs need expansion joints.
For hail, heavier gauges and low-gloss or textured finishes make marks less visible. Certain tested panel assemblies hold UL 2218 impact ratings, explained on our Class 4 metal roofing page.
How does a commercial metal roof project run with PMRS?
Six steps take a project from bid documents to a closed-out warranty.
- Plans review: send drawings and specs, and we measure every roof area from them.
- Bid and scope review: a written proposal names the panel, gauge, finish, seam type and warranty.
- Submittals: product data, colors and roof details go to the architect for approval.
- Fabrication: panels are formed to length, and trim and coping are bent and labeled by location.
- Installation: our crews set clips, underlayment, panels and edge metal to the approved details.
- Closeout: warranty documents and finish records go to the owner.
Commercial metal roofing questions from GCs and owners
What is the minimum slope for a commercial standing seam roof?
Once mechanically seamed, our mechanical lock panels are rated to 1/2:12; below 3/12 they go over high-temperature underlayment. Snap lock needs at least 3/12, and steeper roofs open up more profile and finish choices.
What is a weather-tightness warranty on a metal roof?
It is an optional third-party warranty the owner can purchase, covering the roof system against leaks rather than only the materials against defects. It applies to mechanically seamed systems seamed to specification, and the terms vary by project, so ask for them with your bid.
Can PMRS provide submittals and shop drawings for our project?
Yes, for any roof we install. We prepare shop drawings for architect and engineer review, along with panel data, colors and finish data. Site-specific engineering is available on request.
Do you work as the roofing subcontractor for general contractors?
Yes. We bid and install the metal roof scope with our own crews, from underlayment and clips to panels, coping and flashing, and we coordinate the schedule with your superintendent.
Can metal panels go over open framing on a metal building?
Some can. Our 2-inch mechanical lock and 1.75-inch snap lock panels can be installed over open framing or a solid deck, subject to engineering. The 1-inch and 1.5-inch mechanical lock panels require a solid deck.
Is Tedlar worth the extra cost on a commercial roof?
For buildings that must look new for decades or face chemicals and graffiti, often yes. On many projects, though, a standard PVDF color with its 40-year finish warranty is the better value, and we can price both.
Do you install metal mansards and fascia?
Yes. Our snap lock and mechanical lock profiles carry from the roof onto mansards and fascia, so one panel family can finish the building. For curved or decorative areas, copper and zinc flat lock or diamond panels are covered on our copper and zinc roofing page.
Send us your plans for a bid
Email drawings to HelpDesk@PermanentMetalRoofingSystems.com or use the form. Tell us the bid date, the specification section and the roof areas in the scope.
- Installed pricing from architectural drawings
- Panel and finish data for your submittal log
- Our own installation crews, working from our Mesquite office
Get Your Free Metal Roof Estimate
Tell us about your roof. Our Mesquite office calls back the same business day to set up a free measurement and an itemized written estimate.
Prefer to talk now? Call (469) 466-2421.
Have a metal roof package out to bid?
Call (469) 466-2421 to talk through the scope with the people who will form and install it.