When it comes to cutting through tough road surfaces, few tools perform as well as overlay blades, also known as AOC diamond blades (Asphalt Over Concrete). These blades are engineered for one of the most demanding jobs in construction. Cutting asphalt that has been laid directly over concrete. If you work in road construction, paving, or heavy-duty cutting projects, knowing when and how to use overlay blades can save time, reduce downtime, and increase job site efficiency.
What Are Overlay Blades?
Overlay, or AOC blades are premium-grade diamond blades specifically designed for cutting asphalt layered over concrete. Unlike standard asphalt or concrete blades, these blades are built to handle the unique challenges of cutting through two very different materials in one pass.
Asphalt is softer and more abrasive, while concrete is much harder. Standard blades wear down too quickly or fail to cut cleanly when faced with this combination. Overlay blades, however, feature advanced diamond segments and bonding technology that deliver both speed and durability.
At Diamond King Tools, our overlay blades are trusted by some of the biggest road-cutting professionals in the country. Available in sizes ranging from 18″ to 36″, and with custom manufacturing options for even larger diameters, these blades are built for serious pros running saws from 11 horsepower up to 100 horsepower.
Why Use Overlay Blades?
The key advantage of these blades is their versatility and performance when cutting composite surfaces. Here’s why contractors rely on them:
- Supreme Cutting Action – The segment design ensures smooth, efficient cutting through asphalt, concrete, or both.
- Longer Blade Life – Premium bonding and diamond concentration extend the life of the blade, reducing replacement costs.
- Faster Production – High cutting speed keeps projects on schedule, especially on road and highway jobs where time is critical.
- Professional Reliability – These blades are engineered for contractors who can’t afford downtime or blade failure.
How to Use Overlay Blades Effectively
Using overlay blades properly ensures you get the most out of your investment:
- Match the Blade to Your Saw – Make sure the blade size fits your walk-behind or high-horsepower saw. For heavy-duty jobs, a larger diameter blade (such as 30″-36″) paired with a powerful saw delivers optimal performance.
- Check the Surface – Confirm whether you’re cutting through asphalt only or asphalt over concrete. Overlay blades can handle both, but proper planning improves efficiency.
- Step Cutting – For deeper cuts, use step cutting techniques to reduce strain on the blade and extend its life.
- Use Proper Cooling – If possible, run water while cutting to keep the blade cool and prevent premature wear.
- Follow Safety Protocols – High-horsepower saws require trained operators. Always wear protective gear and inspect your blade before use.
Why Choose Diamond King Tools?
At Diamond King Tools, we take pride in offering the highest quality overlay and AOC blades in the country. Built for pros, our blades provide unmatched cutting speed, life, and reliability. Whether you’re tackling large-scale road work or smaller asphalt jobs, our blades are designed to keep your projects moving.
From 20-inch to 36-inch blades, and even custom sizes beyond that. We’ve got the solution for your toughest asphalt and concrete challenges.
Conclusion
Overlay blades are the go-to solution for professionals cutting asphalt over concrete. With superior durability, speed, and versatility, these blades save time and money while delivering cleaner, more precise cuts. If you want a blade trusted by top road-cutting crews nationwide, Diamond King Tools has you covered.
Ready to upgrade your cutting game?
Call us today at (877) 700-2022 or visit diamondkingtools.com to order your overlay blades.
