The Edco C10301A ALR Chisel Scaler ALR-5A is a heavy-duty pneumatic floor scaler engineered for concrete contractors, restoration crews, and industrial maintenance teams who need to remove tough surface coatings, mastic, hardened deposits, and weld spatter without bending over or fighting a hand chisel all shift. The lightweight 5-foot aluminum handle gives a comfortable upright working position while the 4-inch chisel face delivers focused chipping force - faster removal, less operator fatigue, less labor cost on every job.
Who buys this scaler
The C10301A lives on jobs where coatings have to come off concrete, steel, or masonry: epoxy and urethane floor coatings during recoat prep, vinyl tile mastic during retail-build remodel, thinset and tile adhesive on commercial and residential floor demos, weld spatter on shipyard and steel-fabrication floors, paint and lead-paint abatement on industrial structures, and frozen build-up in cold storage and food-handling facilities. Edco has been the brand of choice for North American concrete contractors for decades, and the ALR-5A is one of the bread-and-butter models in their pneumatic scaler line.
Top use cases
- Floor coating recoat prep - removes failed epoxy, urethane, and elastomeric coatings before re-coat without dust-up of grinding.
- Mastic, thinset, and tile adhesive removal - faster than scrapers and lower-dust than grinders for retail and commercial demo.
- Weld spatter and slag knock-off - on steel decking, shipyard floors, and fabrication shops.
- Hardened deposit removal - frozen product, cured concrete spills, and adhesive overspray on industrial floors.
- Paint and lead-paint scraping - structured paint removal as part of a full abatement protocol with appropriate PPE and containment.
Specifications
- Model: ALR-5A (Edco part number C10301A)
- Handle length: 5 feet, lightweight aluminum
- Chisel width: 4 inches
- Approximate weight: 8 lbs
- Drive type: pneumatic - requires shop air compressor
- Application: floor coating removal, mastic, weld spatter, deposits
- Chisel: replaceable; multiple width options available
Frequently asked questions
What size air compressor do I need?
Edco pneumatic scalers run on standard shop air. Most contractors get the working performance they need with a 5-7.5 HP compressor delivering 15-20 CFM at 90 PSI. Smaller pancake-style compressors will work the scaler intermittently but will starve the tool on sustained work; rent or invest in a contractor-grade twin-tank or wheelbarrow compressor for daily work.
How does it compare to a walk-behind scarifier?
Different tool, different job. Walk-behind scarifiers cover large square footage on flat concrete fast and are the right pick for full-floor coating removal on warehouse and parking-deck floors. The hand-held ALR-5A is the right pick for spot work, edge work, corners, around equipment, and on multi-level or partial-floor demos where rolling a scarifier is not practical. Most contractors carry both.
What is the chisel replacement and sharpening protocol?
Chisels are replaceable; rotate or swap when the working edge is dulled or chipped. Some shops sharpen on a bench grinder; others run consumable chisels and replace at end of life. Edco stocks chisels in multiple widths, so a single ALR-5A can handle 1.5-inch to 4-inch profiles depending on the job.
Is it dust-controlled?
The chisel scaler itself is a percussion tool and creates dust where it works. For coatings that may contain silica, lead, or other regulated materials, run a HEPA shop vac in proximity, follow OSHA Table 1 silica protocols, and use approved respiratory protection. The C10301A is the demolition tool; dust control is layered on top with vacuums and PPE.
Can I use it on stone or polished concrete?
Avoid using a chisel scaler on finished, polished, or decorative surfaces - it is a demolition tool and will mark the substrate. For polished concrete recoat work, use a buffing or grinding system that respects the existing finish.
Discount Cleaning Products is an authorized Edco dealer. We stock the C10301A ALR-5A and ship direct from Edco distribution with full factory warranty and access to OEM chisels and replacement parts.