Ordering metal roofing is easier—and far less expensive—when the measurements, panel choice, trim, and accessories are settled before fabrication begins. Whether you are a homeowner, contractor, roofer, farmer, or maintenance professional, a little preparation can prevent short panels, missing trim, color mismatches, and unnecessary return trips.

Sullins Metal & Siding Supply helps customers from Aragon, Rockmart, Cedartown, Rome, Cartersville, Dallas, Calhoun, Bremen, and surrounding Northwest Georgia communities prepare roofing-panel and custom-trim orders. Use this guide as a practical checklist before you call or visit.

1. Start With Accurate Roof Measurements

Record each roof plane separately. For a basic gable roof, you generally need the eave length and the slope length from eave to ridge. More complex roofs may also require measurements for hips, valleys, sidewalls, headwalls, transitions, dormers, porches, and penetrations.

• Panel length: Measure along the roof slope, not horizontally across the building.
• Quantity: Determine how many panels cover each eave based on the panel’s actual coverage width.
• Trim length: Measure ridge, rake, eave, valley, sidewall, headwall, transition, and hip conditions separately.
• Openings: Note chimneys, vents, skylights, pipes, and other penetrations that may require boots, flashing, or additional material.
• Multiple roof sections: Label every area so similar measurements do not get mixed together.

If possible, bring a clear sketch showing dimensions and roof features. Photos can also help our team understand the conditions, but they do not replace accurate field measurements.

2. Confirm the Roof Pitch

Roof pitch affects trim details, panel lengths, roof geometry, and whether a particular product or installation method is appropriate. Pitch is commonly written as rise over 12 inches of horizontal run—for example, 4:12.

Do not estimate pitch by eye. Use a safe measuring method or have a qualified person confirm it. Never climb onto a steep, wet, damaged, or otherwise unsafe roof just to obtain a measurement.

3. Choose the Panel Profile and Gauge

Different panels are made for different appearances and applications. Our metal roofing supplies page provides an overview of locally available roofing materials. Before ordering, confirm the profile, coverage width, rib pattern, substrate, coating, and recommended roof application.

Gauge describes metal thickness, but the lowest gauge number is not automatically the right choice for every project. Common 29-, 26-, and 24-gauge products differ in thickness, cost, availability, profile, and intended use. Building design, local code, panel span, substrate, wind exposure, manufacturer requirements, and project specifications should guide the selection.

If you are matching an existing roof, bring the best information available: manufacturer, panel profile, rib spacing, gauge, color, finish, age, and a sample when practical. Similar-looking panels may not overlap or fasten together correctly.

4. Select the Color and Finish Carefully

Colors shown on a phone, computer monitor, photograph, or printed page can look different from the finished metal. Lighting, surrounding materials, age, and production batches also affect appearance. Review a current physical color sample when color matching is important.

For additions or repairs, remember that older roofing can fade or weather. A newly manufactured panel in the original color may still appear different next to older material.

5. Build a Complete Trim List

Panels alone do not complete the roof. The exact trim package depends on the design, but may include:

• Drip edge or eave trim.
• Rake or gable trim.
• Ridge cap and hip cap.
• Valley trim and related cleats.
• Headwall, sidewall, and transition flashing.
• Z-closure, receiver, fascia, or other system-specific trim.
• Pipe boots and penetration flashings.
• Custom trim for unusual walls, transitions, repairs, or architectural details.

Sullins Supply can fabricate many project-specific pieces. Visit our custom sheet metal and copper fabrication page to see the kinds of trim and components we can help produce.

For custom trim, a dimensioned drawing is much more useful than a general description. Show each bend, leg length, angle, hem, open or closed side, material, gauge, color, finish, and total quantity. Clearly mark which face will be visible.

6. Do Not Forget Fasteners, Closures, and Sealants

A complete order may also require metal-to-wood or metal-to-metal screws, clips for concealed-fastener systems, inside or outside closures, butyl tape, sealant, underlayment, ventilation components, and accessories for penetrations.

Fastener type, length, coating, washer, color, quantity, and placement should match the panel system, substrate, and manufacturer instructions. Sealants are not interchangeable, and more sealant is not a substitute for a correctly formed and installed flashing detail.

7. Confirm Underlayment and Deck Conditions

Before installation, determine whether panels will be installed over solid decking, purlins, an approved existing roof, or another substrate. The required underlayment, fastening, ventilation, and preparation depend on the assembly and applicable manufacturer and code requirements.

Damaged decking, uneven framing, trapped moisture, or incompatible existing materials should be addressed before new panels are installed. If you are unsure, consult the installer, manufacturer instructions, and local building requirements.

8. Plan Pickup or Delivery

Metal roofing panels can be long, flexible, and easily damaged by poor handling. Before pickup, confirm the longest panel, total bundle size, trailer or rack capacity, securement method, weather protection, unloading plan, and route restrictions.

Bring appropriate support, straps, edge protection, and enough help to load and unload safely. Do not allow long panels to fold, drag, or scrape across one another. If delivery is available for your order, confirm access, ground conditions, unloading responsibility, timing, and any limitations in advance.

Common Ordering Mistakes to Avoid

• Using building width instead of the actual roof-slope measurement.
• Assuming every metal panel has the same coverage width or rib spacing.
• Ordering every panel the longest length instead of separating roof areas.
• Forgetting overhang, trim allowances, roof transitions, or penetrations.
• Choosing color from a screen without checking a physical sample.
• Trying to match an unknown existing profile from a distant photograph.
• Leaving screws, closures, butyl tape, sealant, or underlayment off the order.
• Submitting custom trim without a dimensioned drawing and visible-face direction.
• Arriving for pickup without a safe way to support and secure the panels.

Metal Roofing Order Checklist

• Customer and job contact information.
• Job location and pickup or delivery plan.
• Roof sketch with every plane labeled.
• Eave, slope, ridge, hip, valley, rake, wall, and transition measurements.
• Roof pitch for each section.
• Panel profile, coverage width, gauge, color, finish, and quantity by length.
• Complete trim list with custom drawings where needed.
• Fasteners, closures, sealants, underlayment, boots, and accessories.
• Final review of quantities, colors, lengths, and special-order terms before fabrication.

Talk With a Local Northwest Georgia Supplier

Sullins Metal & Siding Supply is located at 2616 Rome Highway in Aragon, Georgia. We serve contractors and property owners looking for metal roofing panels, custom trim, gutter supplies, siding, and related building materials across Northwest Georgia.

Call 770-684-8354, send us your material list or project details, or browse our online store. The more complete your measurements and specifications are, the faster we can help turn them into an accurate order.