Cut clean, laser-straight control joints and prevent random slab cracking on expansive concrete pours. The Marshalltown 15549 12" Control Joint Hand Groover provides superior straight-edge tracking and joint consistency.
On wide residential slabs, driveways, and decorative concrete patios, cutting uniform control joints is critical for directing stress relief as the concrete cures. The 15549 features an extended 12-inch extruded aluminum blade that acts as its own straight guide, preventing the tool from wandering or twisting off line during long passes. Equipped with a 1-1/2-inch deep bit and a 1/4-inch edge radius, this groover cuts deep, clean expansion slots into fresh concrete to control cracking while creating smooth, decorative joint margins. Crafted from lightweight, high-strength aluminum, it resists concrete slurry buildup and cleans in seconds with a quick water rinse.
Extended 12-Inch Straight-Edge Profile: Long blade length tracks smoothly across the slab to cut long, laser-straight control lines without twisting or wandering off mark.
1-1/2" Bit Depth with 1/4" Radius: Creates deep, functional stress-relief joints that guide slab cracking while leaving smooth, chip-resistant radiused margins.
Lightweight Extruded Aluminum: Aircraft-grade aluminum body resists rust and corrosion while offering a lightweight operational feel that won't sink into wet concrete.
Non-Stick Slurry Clearance: Low-friction metal finish allows smooth gliding and effortless cleanup at the end of the pour.
Ergonomic DuraSoft® Cushion Grip: Outfitted with Marshalltown's signature resilient DuraSoft handle to dampen vibration and prevent hand slipping during long jointing passes.
Residential Slab Stress Relief: The essential hand tool for cutting expansion and control joints in driveways, sidewalk bays, patio slabs, and garage floors.
Decorative & Stamped Concrete: Creates clean, crisp border lines and joint patterns across decorative flatwork layouts.
Deep Joint Crack Control: Delivers a full 1-1/2-inch slot depth to satisfy structural specification requirements on thicker slab pours.
Part Number / EDI: 15549
UPC: 035965055499
Blade Dimensions: 12" x 4-1/2" (305mm x 114mm)
Bit Depth: 1-1/2" (38mm)
Bit Radius: 1/4" (6mm)
Blade Material: Extruded Aluminum
Handle Style: Straight DuraSoft® Grip
Country of Origin: Made in the USA with Global Materials
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