When tackling metal roofing projects, selecting the right metal shears is essential for clean lines, efficient cutting, and reduced fatigue. This guide compares five reliable options from trusted brands, covering performance, maneuverability, and versatility. Whether you’re trimming flashing, cutting corrugated panels, or sculpting curves, these tools are designed to handle common roofing materials with precision. Below, you’ll find product highlights, specs, and practical tips to help you choose the best shear for your setup.
Summary table of selected products
| Product | Brand | Key Use | Notable Feature |
|---|---|---|---|
| DEWALT Metal Shear/Cutter Drill Attachment (DWASHRIR) | DEWALT | Sheet metal and roofing materials | 360° swiveling head for tight spots |
| WEN Metal Shear (3650) | WEN | 18-gauge metal and 20-gauge stainless steel | Variable speed, lightweight |
| Malco TSCM Corrugated Metal Turbo Shear Attachment | Malco | Corrugated metal roofing cuts | Compact drill clamp |
| DEWALT 20V MAX Metal Shear/Cutter (DCS494B) | DEWALT | Lightweight cordless cutting | 360° swivel head, LED work light |
| SHALL Electric Metal Cutting Shear (SHALL) | SHALL | 14GA to 16GA sheet metal | Double-cut design and variable speed |
DEWALT Metal Shear/Cutter Drill Attachment
The DEWALT DWASHRIR is designed for impact-ready applications with a 360-degree pivoting head, allowing access to tight spots often found along roof edges and around penetrations. It accepts a 1/4 inch hex shank and is capable of cutting a variety of materials, including up to 18-gauge sheet metal, duct, corrugated panels, vinyl siding, plastics, and more. The flexible head lets users maneuver the cutter in awkward angles without removing the drill. This attachment is suited for contractors who want the convenience of a single tool that can quickly switch between drilling and shearing tasks on a job site.
Performance-wise, the DWASHRIR’s swappable direction helps maintain accuracy when following complex roof profiles or irregular cuts. The design emphasis is on control and adaptability in confined spaces, which can reduce the need for manual snips and separate shears. Users report that the attachment excels in lightweight, precise cuts rather than heavy-duty metalwork, making it ideal for flashings, trims, and light-gauge panels on metal roofing jobs.
WEN Metal Shear, Swivel Head, 18-Gauge
The WEN 3650 is a compact, corded option with a swiveling head and a variable-speed trigger. It supports materials up to 18-gauge sheet metal and can handle thicker 20-gauge stainless steel in some cut scenarios, according to user expectations. The 4-amp motor provides steady performance for lighter to mid-weight roofing tasks, such as trimming flashing, creating precise notches, and shaping metal around corners. The tool’s weight and balance help minimize fatigue during extended use, which is a practical advantage on larger roofing projects.
For operations requiring controlled, consistent cuts, the WEN 3650 offers reliable performance with adjustable speed settings. The device is well-suited for professionals who frequently adjust cutting pace in response to material hardness or thickness. It’s not a heavy industrial cutter, but it delivers solid results for residential metal roofing tasks and general sheet-metal work in a workshop environment.
Malco TSCM Corrugated Metal Turbo Shear Attachment
The Malco TSCM Turbo Shear Attachment is designed to ease cross-cuts in corrugated metal roofing. It fits cordless or corded drills, enabling quick conversions from drilling to shearing without swapping tools. The unit is lightweight with a compact drill clamp, making it a practical choice for on-roof adjustments or trimming around vents and vents and other roof components. It’s especially advantageous for workers who frequently encounter irregular corrugation patterns and require agile maneuverability to follow sine curves and wave-like profiles.
Users appreciate the quick-change capability and the compact form factor, though some note that results depend on drill compatibility and feed rate. It’s best used for lighter corrugated materials and field adjustments rather than thick metal stock. Overall, the TSCM attachment offers a cost-effective way to extend a drill’s utility for roofing contractors who encounter irregular panel shapes on residential projects.
DEWALT 20V MAX Metal Shear/Cutter (DCS494B)
The DEWALT DCS494B is a cordless metal shear with a 360-degree swiveling head, designed to reach tight spaces and provide clean cuts on 14-gauge metal. The tool features an LED work light to illuminate the cutting area, improving visibility for precise trimming on roofs, gutters, and flashing. A notable capability is the continuous curling of a 7/32-inch strip away from the cutting area, helping to keep the work surface clear and reduce binding during aggressive cuts. The cordless nature eliminates cord management concerns on elevated roof work, although battery life and runtime should be considered for larger jobs.
Considerations when choosing this model include battery compatibility with existing DEWALT tools, the weight of the bare tool, and whether the 14-gauge capacity aligns with your typical roofing metals. For crews prioritizing mobility, this option balances power with flexibility, enabling efficient trimming in confined roof spaces.
SHALL Electric Metal Cutting Shear
The SHALL Electric Metal Cutting Shear is a 4.0-amp corded cutter with a 360-degree swivel head and continuous cutting capability. It’s designed for 14-gauge sheet metal and 16-gauge stainless steel, delivering up to 2500 SPM. The double-cut design helps create cleaner cuts by curling a thin strip away from the work surface, reducing waste and improving finish quality. The tool is highlighted for its flexibility in cutting curves, straight lines, and complex shapes, making it a strong option for roof sections that require custom trim work. Durability and a smooth finish are often cited as key advantages in field use.
Practical notes include ensuring proper alignment of the double-cut blade, maintaining blades for sharpness, and using appropriate safety gear due to the high cutting speed. This model suits professionals who need reliable electric performance with precise control across a range of sheet metal thicknesses on roofing projects.
Buying Guide: Key Considerations When Choosing Metal Shears for Roofing
Material compatibility: Most metal shears for roofing focus on light to medium-gauge metals (commonly 14–18 gauge). Confirm the maximum material thickness and whether the tool handles copper, aluminum, steel, or mixed profiles often encountered on roofs.
Head orientation and maneuverability: A 360-degree swivel head improves access in tight spaces along eaves, ridges, and inside panels. Look for models with a stable clamping mechanism or foot support to minimize wobble during long cuts.
Power vs. portability: Corded models deliver consistent performance, while cordless options offer mobility on elevated roofs. Consider battery life, recharge time, and weight when choosing, especially for larger jobs with many cuts.
Cut quality and finish: Double-cut blades and anti-fray finishes help produce clean edges and reduce burrs. A curling or curled-edge feature can facilitate cleaner strips and easier handling of cut pieces.
Ease of use and safety: A comfortable grip, low vibration, and intuitive trigger control reduce fatigue. Ensure blades are lockable for safe storage, and always use eye protection and gloves during operation.
Accessory versatility: Attachments and modular designs (such as drill-mounted turbo shears) can extend a single drill’s utility for on-site variations, which can be cost-effective for small crews or DIY enthusiasts.
Maintenance and replacement parts: Check blade availability and replacement costs. Regularly sharpening or replacing blades maintains cutting efficiency and safety over time.
Value for money: Compare initial cost, performance, and expected lifespan. For contractors, a slightly higher upfront investment can translate into faster, cleaner cuts and reduced labor time on roofing projects.
In summary, the best metal shears for metal roofing blend cutting power, maneuverability, and material versatility. The options listed here cover cordless and corded designs, swivel-head configurations, and attachments aimed at corrugated panels and curved cuts. Choose based on your typical material thickness, job scale, and the ease with which you can maneuver around roof features while maintaining a safe, efficient workflow.