Thanaddo Roof Panels 15 pcs L73.2×W16.77 inch Galvanized Steel, Metal Corrugated Tin Roofing Panels Gazebo Top Cover Heavy Duty Roof Replacement for Patio Outdoor Garden, Black

I spent a weekend re‑skinning a tired patio cover with Thanaddo’s galvanized roof panels, and they proved to be a straightforward, DIY‑friendly way to get a clean, modern corrugated look without overspending. They’re not heavy-duty sheets, and you’ll want to budget for better fasteners and sealants, but for sheds, pergolas, gazebos, and light carports, the balance of weight, rigidity, and finish is solid.

What you get and how it looks

Each kit includes 15 corrugated steel panels, each 73.2 inches long by 16.77 inches wide, with a thin 0.01-inch (about 0.25 mm) substrate and a black topcoat. My set arrived with a protective plastic film on the painted face and 200 included screws.

The finish reads as a deep charcoal rather than an inky black, which I actually prefer outdoors—true black can show dust and pollen immediately. The backside on my batch was a light coating (off-white), useful if you’ll see the underside. Corrugations are consistent and the paint film was even, with no fisheyes or holidays. Because the metal is thin, the profile is doing a lot of the stiffness work; supported on appropriately spaced purlins, the panels sit flat and look cohesive.

Unboxing and first impressions

The carton is long and not light. Mine arrived with one corner crunched; two panels had small edge dings that I flattened with a block of wood and a few careful taps. Nothing structural, but I’d plan to have a mallet on hand and inspect everything before you start.

A heads-up on the protective plastic: peel it before installation or very soon after. If the sheets warm up in the sun, the film is more stubborn to remove. I had the best luck keeping the stack in the shade, starting a corner, and pulling diagonally. Gloves are a must—the cut edges and corners are sharp.

Coverage math you should do before you buy

The nominal width is 16.77 inches, but corrugated panels need overlap. I used a one-corrugation side lap, which cost just over an inch per panel.

• Nominal width: 16.77 in
• Effective coverage (what you can actually count on): roughly 15.5 in per panel with a one-rib overlap

Using that, 15 panels cover about 232.5 inches across (19.4 feet). At 73.2 inches long (6.1 feet), that’s just under 120 square feet—enough for a 10 × 12 ft patio cover with a small overhang and trim. If your design demands more overlap (exposed, windy locations, or shallow slopes), reduce the effective width a bit more in your planning.

Installation notes from the job

• Layout and support: I set purlins 24 inches on center, which kept deflection and “drum” down. If you’re in a windy area or want a quieter roof during rain, 16-inch spacing feels better with thin sheets like these.
• Fasteners: The included screws are basic and not self-drilling. They’re fine for temporary attachment and layout, but I switched to self-drilling roofing screws with EPDM washers. Plan on more than the included 200. At 6–8 screws per purlin line, with three purlin lines per 6-foot panel, you’ll use 18–24 screws per sheet. Multiply by 15 panels, and you’re in the 270–360 range.
• Sealing: For actual roofing, use butyl tape at side laps and foam closure strips at the eave/ridge to keep wind-driven rain and driven insects out. These aren’t included; add them to your cart. For side cladding (carport walls, privacy screens), you can often skip the sealants.
• Cutting: Aviation snips or a nibbler leave a cleaner edge than an abrasive wheel (which can burn paint and leave hotspots that rust). If you do cut, touch up exposed steel with a matching paint or cold galvanizing compound.
• Sequence: Start square at the most visible edge and work away from it. Snap a reference line. Every small error in a corrugated run compounds, and these thin panels will telegraph misalignment.

With the basics sorted, the panels are painless to handle. They’re light enough to lift to height without a second person on small projects, though having a helper always beats wrestling in a breeze.

Performance and durability

At 0.01-inch thickness, these are light-duty roofing panels. On a solid frame and with correct fastening, they sit securely and shed water well. The galvanization and paint should keep rust at bay, especially since they shipped with intact coatings. Do touch up any cut edges, and keep an eye on fastener points—the integrity of your weather seal largely comes down to those washers and the quality of the screw you choose.

Noise is typical of thin corrugated metal. Rain is audible; hail will be loud. If that matters, a thin foam tape between panel and purlin, or a batt of insulation below, reduces the drum considerably.

Thermally, the black topcoat absorbs heat. Under full sun, the sheets run hot to the touch and radiate into the space below. That’s beneficial in winter or shaded installations; for south-facing roofs in hot climates, prioritize ventilation or consider a lighter color option from the same line.

Wind resistance is as much about installation as the panel itself. I used lap screws at the overlaps and stayed on the conservative side with fastener count, and it’s been uneventful through a couple of gusty days. If you’re in a high-wind region, step up to denser fastening and consider a heavier gauge panel.

Where these panels shine

• DIY-friendly projects where weight matters: pergolas, gazebos, small sheds, chicken coops, bar counters, and accent walls.
• Cost-conscious re-skins: replacing brittle fiberglass panels or mismatched old corrugated without rebuilding the substructure.
• Aesthetic upgrades: the charcoal topcoat pairs nicely with stained wood and black hardware for the “modern barn” look.

Where I’d look for heavier material

• Snow country roofs that carry load for long periods. The thin sheet will oil-can and could dent under heavy, wet snow if support spacing is wide.
• High-traffic or high-impact areas (e.g., siding around a driveway where dings are likely).
• Code-driven installs requiring specific gauge or UL-listed assemblies.

Small quirks and tips

• Expect the “black” to read as very dark gray in daylight.
• The protective plastic is a blessing during shipping, a chore if left in the sun. Peel early.
• Account for overlap in your material takeoff; the effective width is what counts.
• Bring your own hardware: self-drilling roofing screws with EPDM washers, butyl tape for side laps, closure strips for ridge/eave.
• Wear gloves. Even cleanly cut sheet edges bite.

Value

Panels at this length can be tricky to source locally, and shipping long steel is never cheap. Considering the quantity (15 pieces) and the included basic screws, the kit represents a practical value for light-duty applications. The tradeoff is the thin substrate and the need to supplement with better hardware. If you price out heavier 8–10 ft, 29‑gauge panels at a home center and add transport hassles, Thanaddo’s kit holds its own for projects that don’t demand the thicker stock.

Bottom line

Thanaddo’s roof panels are a smart pick for lightweight roofing and cladding jobs where ease of handling, a clean painted finish, and sensible cost matter more than maximum gauge and storm-hardening. They install easily if you plan for the overlap, upgrade the fasteners, and use proper sealants. The finish looks good out of the box and, with basic care on cut edges, should stay that way.

Recommendation: I recommend these panels for DIYers and pros tackling pergolas, gazebos, small sheds, under‑deck privacy, and similar light-duty projects. They deliver a neat, uniform look, they’re easy to work with, and the coverage is predictable once you account for overlap. If you need a roof that will shrug off heavy snow loads, major hail, or sustained high winds—or you require a true jet‑black finish—step up to a thicker gauge or a different coating system. Otherwise, pair these with quality roofing screws, butyl tape, and closure strips, and you’ll be happy with the result.