What Installers Need From a Metal Panel Fabricator, and What the Shop Needs Back

A metal panel fabricator turns coil into panels and trim, but the parts can only be as accurate as the information that comes in with the order. Crews that send clean takeoffs and field dimensions get panels that go up without surgery on the scaffold. Shops that send back drawings, cut lists and sorted bundles save those crews hours on every elevation. This guide covers both sides of that handoff on roof and wall panel jobs around Dallas-Fort Worth, from the first takeoff to the day the truck is unloaded.

It is written for installers, roofing contractors and builders. We run a panel and trim shop in Forney, so the advice comes from the bench side of the order. For the panels themselves, start with our metal wall panel line or the standing seam page.

What does each side owe the other?

In short: the installer owes the shop accurate numbers and firm decisions, and the shop owes the installer parts that match those numbers, delivered in an order that makes sense on site.

Stage	The installer sends	A good fabricator returns
Quote	Plans or field dimensions, profile, gauge, finish and color	An itemized quote, a confirmed ship date and questions about any gaps
Color	The color name and finish, approved from a chip	Color charts for the paint lines and chips when asked
Submittal	Spec sections and the approval path	Product data and shop drawings when the job calls for them
Cut list	Panel lengths and counts by elevation or roof plane	A cut list whose marks match the drawing
Trim	Profile sketches with every leg and angle	Trim bent in the same color as the panels
Delivery	Site access, unloading plan and contact	Parts bundled and marked so the crew can find them
Changes	Revisions in writing, before cutting	A revised cut list to approve

Why does the handoff matter so much?

Because most fit problems on a panel job start as information problems, not metal problems. A panel cut to a plan dimension that the framing never hit, a rake trim bent to the wrong pitch, a second color run that reads a shade off: each began as a missing or wrong number on paper.

Fixing that on the wall costs far more than fixing it at the desk. A short panel cannot be stretched, and a trim angle that is five degrees off has to be re-bent or forced. Every hour spent on a clean takeoff saves several on the scaffold.

What should a panel takeoff include?

Everything the shop needs to cut and bend without guessing. A complete takeoff usually lists:

• Profile and coverage: for example snap-lock standing seam at a stated panel width, or AMP Wave 16-4 at 16 inches of coverage.
• Gauge and substrate: 24-gauge Galvalume is the usual roof standard; exposed-fastener wall panels may run 22 or 24 gauge.
• Finish and color: Kynar 500 or SMP, with the color name from the chart.
• Panel lengths and counts: grouped by roof plane or wall elevation, with the start and end points marked.
• Trim list: eave, rake, ridge, hip, valley, corners, jambs, heads, sills and base, each with a profile sketch.
• Openings: windows, doors, louvers and penetrations, with sizes and locations.
• Accessories: closures, clips, sealant tape and fasteners, with a note on which items the shop supplies and which come from elsewhere.

Plans are fine for a budget quote. For the cut, the next question matters more.

Should lengths come from the plans or the field?

Quote from plans; cut from the field. Framing, sheathing and girts rarely land exactly where the drawings put them, and a panel cut to the plan dimension can come up short at the eave or long at the ridge.

• Measure what is built: take panel-run lengths once the deck, girts or furring are in place, not before.
• Measure along each panel line: on roofs, eave to ridge at both ends and the middle of each plane; on walls, base to head at several points.
• Check square and plane: note any wall or roof that is out of square or out of plane, since the shop can taper or adjust trim only if it knows.
• Add the overhangs: state how far the panel should run past the eave or base, and how the end is finished.
• Know the length limits: our shop ships panels up to 40 feet long and can form longer runs on site, up to 200 feet, so plan single-piece runs around those numbers.

Which profile, gauge and finish decisions come first?

The ones that change what gets cut. Settle them before the order goes in, because each one sends the coil down a different path.

Profile drives everything else. A concealed-fastener wall panel, an exposed-fastener rib panel and an R-panel or corrugated sheet each need different trim, clips or fasteners and lap details. Gauge follows the span and the exposure: 24-gauge Kynar steel is the standard roof panel, and 26-gauge SMP is the budget option on shops and barns. Flat-pan profiles benefit from striations or pencil ribs, which help hide the waviness our oil canning guide explains.

Finish is a cost and longevity call. Kynar 500 (PVDF) holds color far longer in Texas sun, and coil makers typically back it with a 30- to 35-year chalk and fade warranty. SMP costs less and does best in lighter colors. The coil maker’s terms are summarized on our warranties page.

How should color approval work?

From a physical chip, in daylight, before the order is released. Screens and printed charts shift color, and a dark bronze can read brown or black depending on the light.

• Approve the chip outdoors, next to the brick, stone or glazing it will sit beside.
• Write the color name and the finish line on the order, not just a code from memory.
• Order the panels and trim for one elevation together, and ask for them to be cut from the same coil.
• If trim has to follow later, send the original order details so the shop can match the same color and finish line.

When do you need submittals and shop drawings?

Whenever the specification or the owner asks for them, which is most commercial work. A typical package holds product data, finish data and color charts, shop drawings, clip and fastener schedules and test reports, and the architect approves it before anything is cut. Our guide to the metal panel submittal package walks through each part.

Residential and small commercial jobs can often skip the full package. Even there, an approved profile sketch and cut list protects both sides, because it settles what was ordered before the coil runs.

What should a cut list look like?

Like the drawing, in a form the crew can use on site. A good cut list uses marks that match the elevation or roof-plan drawings, so a panel tagged W3-14 is easy to find on the wall.

• Panels: mark, profile, length, quantity and color for each run.
• Trim: mark, profile sketch with every leg and angle, which face is painted, total girth, length and quantity.
• Notes: any tapered or notched pieces, hemmed ends and pieces that must be cut in the field.

Check it line by line before you approve it. Once the coil is cut, a wrong length becomes a new panel.

How should panels be labeled and bundled for the job?

In the order the crew will use them. Good practice is to bundle panels by elevation or roof plane, with each bundle marked to match the cut list, and to keep trim in its own marked bundles so a corner piece is not buried under 40 panels.

• Bundle marks visible from the side, so nobody has to break a bundle to read them.
• Trim boxed or banded by area, with small parts such as splice plates kept together.
• Bundle weights and lengths shared before delivery, so the site can plan a forklift, a lift or enough hands.
• Long panels supported along their length, not just at the ends.

When you order, say how you want the bundles split. A fabricator can only sort by elevation if it knows which panel goes where.

What should happen when the material arrives?

Inspect it, unload it carefully and store it so it stays dry and flat.

1. Check the delivery against the packing list and the cut list before the driver leaves, and photograph any damage.
2. Lift long panels with a spreader bar or enough people to keep them from bending in the middle. Carry single panels on edge, not flat.
3. Store off the ground on dunnage, with one end slightly higher so rain drains off instead of sitting between sheets.
4. Cover with a breathable tarp, not plastic sealed to the ground, so condensation can escape. Water trapped between stacked sheets can stain the finish.
5. Pull protective film early. Strippable film can bond to the paint after days in Texas sun, so remove it as panels go up, or sooner if they sit.
6. Cut with the right tools. Shears and nibblers leave a clean edge; abrasive blades throw hot particles that can burn into the paint and rust on the surface.

How are changes handled once the order is in?

In writing, and before the coil is cut. A good shop sends back a revised cut list for approval, so the change is on paper before it is in metal.

After cutting, changes usually mean new parts rather than reworked ones. A panel cannot grow, and re-bending painted trim can crack the finish at the fold. Field changes happen on every job; the habit that keeps them cheap is to send them early and to confirm the revised list before anyone reorders.

What does a good fabricator give back?

Clear paperwork and parts that match it. From any panel shop you work with, you should expect:

• A written quote that lists each panel run and trim piece.
• A ship date confirmed with the quote, with pickup or delivery options spelled out.
• Drawings or a submittal when the job needs them, and color charts for the finish lines it offers.
• Panels and trim that match the approved cut list, in the color you approved.
• A named contact who answers questions before cutting, not after.

That is how our Forney shop works with crews across DFW. To start, send a takeoff through the quote form; for flashing, coping and other bent parts, see custom sheet metal work.

Installer questions about working with a panel shop

Should panel lengths come from the plans or from field measurements?

Use plans to quote and field measurements to cut. Framing and girts rarely land exactly where the drawings show, so measure each panel run once the deck or furring is in place and send those numbers with the release.

Who checks the cut list before fabrication?

The contractor or installer who will hang the panels should approve it, line by line, because they know the building as built. The shop then cuts and bends to the approved list.

How should metal panels be stored on a Texas job site?

Off the ground on dunnage, with one end raised so water drains, under a breathable cover. Keep water from sitting between stacked sheets, and pull strippable film early, since heat can bond it to the paint.

Can trim be ordered after the panels?

It can, but color match is easiest when panels and trim for an elevation are ordered together. If trim follows later, send the original order details so the same color and finish line can be matched.

What information speeds up a quote?

Plans or a takeoff sheet, plus five decisions: which profile, which gauge, which paint and color, how many pieces at what length for each elevation, and where the order goes. Sketch each trim piece with its legs and angles. Photos alone are not enough.

Have a takeoff ready? Send it to the shop

Email the plans or field dimensions, the profile, gauge and color, and the trim list. Our Forney shop will come back with an itemized quote and a confirmed ship date. Call (972) 332-2809 or use the contact page.

Send a Takeoff

Metal Wall Panels