Diesel Saw / Road Sawing · Ontario
Diesel Road Sawing for Pavement, Bridge Decks, and High-Production Concrete Cutting
High-horsepower diesel flat saws for roadways, pavement, bridge decks, parking structures, and large-scale slab cutting. Built for production and mobility on open sites and locations where electrical service is limited, supported by experienced crews across Ontario.
Serving Ontario since 1964 · High-production equipment · Experienced crews · Proven methods
The basics
What Is Diesel Road Sawing?
Diesel road sawing, also called flat sawing, uses a high-horsepower diesel-powered saw to…
Capabilities
Built for High-Production Cutting
High-horsepower diesel flat saws built for production cutting on roadways, pavement, bridge decks, and large concrete slabs. Supported by experienced crews, project planning, concrete imaging, and removal coordination.
Roadway & Pavement Cutting
Full-depth cutting of asphalt and concrete for road repairs, road widening, utility cuts, expansion joints, and infrastructure work.
Bridge Decks & Structures
High-production sawing for bridge decks, overpasses, and large structural concrete during rehabilitation and reconstruction.
Open & Remote Sites
Self-powered diesel saws cut where electrical service is limited or unavailable, keeping large and remote sites moving.
Full Project Support
Backed by concrete imaging, coring, removal coordination, and experienced crews to help keep projects moving.
Applications
Where Diesel Road Sawing Is Commonly Used
Diesel road sawing is the high-production option for cutting pavement, roadways, bridge decks, and large concrete slabs. The applications below represent some of the most common projects our crews are called upon to support across infrastructure, municipal, commercial, and industrial work throughout Ontario.
Roadway & Pavement Cutting
Full-depth cutting of asphalt and concrete roads for repairs, road widening, utility installations, and patch work.
Bridge Decks & Overpasses
High-production deck cutting and sectioning for bridge rehabilitation, reconstruction, and structural repair projects.
Expansion & Control Joints
Cutting joints in new and existing pavement and slabs to control cracking and meet design and engineering requirements.
Parking Structures
Slab cutting and removals in parking garages and structures where high-production diesel saws are the practical choice.
Trenching & Utility Cuts
Straight, full-depth cuts for utility trenches, drainage, and service installations across large open sites.
Slab Removals & Demolition
Sectioning large reinforced slabs and pavement for removal during reconstruction and redevelopment projects.
Ready when you are
Planning a Road, Deck, or Slab Cut?
Send us the drawings or project details. Our team will help confirm the scope, method, and timeline before the work begins.
Equipment choice
Choosing Between Diesel and Electric Slab Sawing
Both diesel and electric slab saws play an important role in concrete cutting. The appropriate equipment depends on project requirements, including access, ventilation, power availability, slab thickness, production demands, and overall site conditions. Understanding where each method is most commonly used helps ensure the right equipment is selected for the work.
Diesel Road Sawing
- Roadways, pavement, and exterior concrete
- Bridge decks and infrastructure projects
- Large open-air construction sites
- Remote locations without electrical service
- High-production and deep cutting applications
- Projects requiring greater mobility
Electric Slab Sawing
- Interior construction and renovation projects
- Occupied buildings and active facilities
- Hospitals, schools, office towers, and transit facilities
- Areas where engine exhaust cannot be accommodated
- Locations with adequate electrical service available
- Controlled cutting in enclosed environments
The most effective cutting solution depends on the project, not the equipment. Access, ventilation, power availability, slab thickness, reinforcement, production requirements, and site conditions all influence equipment selection. Looking for interior, low-emission cutting instead? See our electric slab sawing page.
On the job
Diesel Sawing in the Field
Project execution
Before Concrete Cutting Begins
Successful concrete cutting starts long before the saw is brought to site. Depending on the project, planning may include drawing review, utility locating, GPR scanning, radiographic imaging, traffic staging, access planning, and removal coordination. Not every project requires every step, but identifying potential risks before cutting helps avoid delays, damage, and costly surprises.
Review
Review project drawings, site access, slab or pavement construction, traffic staging, removal requirements, and project constraints before cutting begins.
Water, slurry, and site control
Managing Water, Slurry, Dust, and Exhaust
Water is used to cool the blade and control silica dust during cutting, but it also creates slurry that must be properly contained and managed. On roadways and active sites, slurry management and site control are an important part of the overall operation.
Because diesel saws run an engine, ventilation and exhaust are also considered when cutting in covered or partially enclosed areas such as parking structures. Depending on the project, control measures may include wet cutting, vacuum recovery, containment, traffic staging, and cleanup.
Wet Cutting
Water helps cool the blade, extend blade life, and reduce airborne silica dust during cutting operations.
Slurry Recovery & Containment
Slurry is collected, controlled, and prevented from migrating into roadways, drains, and adjacent work areas.
Ventilation & Traffic Control
Exhaust ventilation in covered areas, plus traffic staging and site protection on active roadways and sites.
Cleanup & Handover
The work area is cleaned and prepared for the next trade, helping maintain project schedules and site conditions.
Questions
Diesel Road Sawing FAQ
What is diesel road sawing?+
Diesel road sawing uses a high-horsepower diesel-powered walk-behind saw, also called a flat saw or slab saw, to cut horizontal concrete and asphalt surfaces such as roads, pavement, bridge decks, and large slabs.
When is a diesel saw used instead of electric?+
Diesel saws are commonly used outdoors, on pavement and roadways, on large open-air sites, and in remote locations without electrical service. Electric saws are usually preferred for interior work where engine exhaust cannot be accommodated.
How deep can a diesel road saw cut?+
Cutting depth depends on the saw, blade diameter, access, slab thickness, reinforcement, and site conditions. Large diesel flat saws run big-diameter blades for deep cutting, and for deeper sections the cut can be stepped to reach the required depth.
Can you cut asphalt as well as concrete?+
Yes. Diesel flat saws are commonly used for full-depth cutting of both asphalt and concrete pavement for road repairs, utility cuts, expansion joints, and reconstruction work.
Can diesel saws be used indoors?+
Diesel saws can be used in covered or partially enclosed areas such as parking structures when adequate ventilation is provided. In fully occupied or poorly ventilated interior spaces, electric slab saws are usually the better choice.
Do you cut bridge decks and roadways?+
Yes. High-production diesel sawing is well suited to bridge decks, overpasses, roadways, and infrastructure projects, where production speed, mobility, and deep cutting matter.
Do you scan before sawing?+
Scanning or imaging may be recommended when cutting could conflict with reinforcement, conduit, post-tension cables, or embedded services. The required level of investigation depends on the slab and the cut location.
How is slurry and traffic managed on roadways?+
Slurry control may include wet cutting, vacuum recovery, containment, and cleanup suited to the site. On roadways, traffic staging, lane closures, and site protection are coordinated with the project team before work begins.
Diesel road sawing across Ontario
Have a cut to plan? Let’s talk it through.
Send the drawings or describe the work and we will help confirm the method, sequence, and what to expect before pricing.
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