Concealed-fastener metal · San Antonio, TX
Raised, interlocking seams and hidden clips, with no screws through the roof. The longest-lasting roof we install, for churches, offices, schools and metal buildings that need to look right and stay dry for decades.
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Designed, rolled to length and seamed by one crew, then looked after for the life of the roof.
Architectural and structural panels on new buildings, additions and entry features.
Old shingles, tile or membrane off; deck repaired; underlayment and panels on.
Standing seam over an old exposed-fastener roof on new sub-framing, with the building open.
Unzipped seams, loose clips, ridge caps and failed trim sealant repaired.
Panels laid out so arrays clamp to the seams with no holes through the roof.
Seams, clips, trim and sealants checked each spring and after hail.
Standing seam is a family of systems. Seam height, clip type and steel thickness decide where it can go and how long it lasts.
Seam types · bar = weather resistance
Panels snap together by hand. Clean look on roofs 3:12 and steeper over a solid deck.
Seam folded once by machine. Steeper architectural roofs with more wind.
Seam folded twice. Structural, watertight down to ½:12 and over open purlins.
Clips & steel
Let long panels slide as they heat and cool. On a 150 ft run in our summers that movement is real.
For short panels and steep roofs where movement is small. Simpler and cheaper.
24-gauge as our standard; 22-gauge for long spans, high wind and hail. PVDF holds color for decades.
We install standing seam from roll-formers with current UL and FM test reports, and roll many panels on site to exact length.
The numbers your architect, insurer or board will ask for.
| Panel widths | 12, 16 or 18 in; narrower panels look flatter and resist oil-canning |
|---|---|
| Seam heights | 1 in to 1¾ in architectural; 2 to 3 in structural |
| Steel | ASTM A792 Galvalume AZ50 / AZ55, 24 or 22 gauge; aluminum near the coast |
| Finish | PVDF (Kynar 500 / Hylar 5000), cool-roof colors, 30 to 45-year paint warranty |
| Minimum slope | Snap-lock about 3:12; mechanically seamed down to ½:12 or less |
| Underlayment | High-temperature self-adhered membrane rated for metal roofs |
| Wind uplift | UL 580 / UL 1897, FM 4471 assemblies sized to ASCE 7 loads |
| Hail & fire | UL 2218 Class 4 impact and Class A fire ratings available |
| Service life | 40 to 60 years for steel; longer for aluminum and copper |
Panel layout, seam direction, clip spacing and every trim detail drawn before we order.
Deck repaired and covered with high-temperature underlayment the same day.
Panels rolled on site to run eave to ridge in one piece, with no end laps to leak.
Fixed or floating clips on the engineered pattern, so the roof can move without tearing.
Mechanical seamer locks every seam; trim, ridge and valleys closed with hidden fasteners.
Seams checked end to end, metal shavings swept off, warranty paperwork filed.
Pros
Cons
Five quick questions. No email, no form.
Is the roof dead flat with no slope at all?
Can people see the roof from the street?
Will you own the building for 20 years or more?
Do you plan to add solar panels?
Is the lowest upfront price the main goal?
Your answer
Answer the questions
We will tell you honestly if another system fits better.
Get a free assessmentWhere standing seam earns its higher price in San Antonio.
Flat roofs with less than about ¼ in of slope per foot need a membrane such as TPO or PVC.
2026 installed prices per square foot, including panels, clips, underlayment, trim and disposal.
Typical commercial standing seam
$12 – $20/ sq ft
A 12,000 sq ft church roof: about $144k – $240k
What moves the price
| Scenario | Per sq ft |
|---|---|
| Snap-lock architectural24-ga, solid deck, 3:12+ | $12 – $16 |
| Mechanically seamed24-ga, low slope | $14 – $20 |
| 22-gauge upgradeHigh wind or hail exposure | +$1 – $2 |
| Structural retrofitOver old R-panel, sub-framing | $15 – $22 |
| Aluminum panelsPVDF finish | $17 – $24 |
| Seam or trim repairPer visit | $600 – $3,500 |
From downtown churches to Hill Country offices, inspections are usually scheduled within the week.
Something else? Ask a project manager.
In 2026 commercial standing seam costs about $12 to $20 per square foot installed: $12 to $16 for snap-lock panels on a sloped deck and $14 to $20 for mechanically seamed low-slope roofs. Aluminum and 22-gauge steel cost more.
Typically 40 to 60 years for Galvalume steel with a PVDF finish, and longer for aluminum. With no exposed screws there is far less routine maintenance than on R-panel roofs.
Snap-lock panels usually need about 3:12. Mechanically seamed double-lock panels are tested down to ½:12 or even ¼:12, which is why they are used on large low-slope metal buildings.
If you will own the building 20 years or more, usually yes. It costs more upfront, but there are no screws to replace, the paint lasts longer and the roof often outlives two R-panel roofs.
Visible waviness in the flat part of a panel. It is cosmetic, not a leak. Narrower panels, striations, heavier steel and floating clips installed correctly all reduce it.
Yes, and easily. Clamps grip the raised seams, so arrays attach with no holes through the roof. The roof also outlasts the solar system, so the array never has to come off for a re-roof.
Written by the crews who do this work. All articles
We measure the roof, check the deck and slope, and send a photo report with panel options, colors and fixed prices.
Not sure it is standing seam? Compare the systems we install.
