How to Choose the Right Diamond Blade for Concrete Cutting (UK Guide)

Step 1: Identify the type of concrete you are cutting

Concrete is not a single material. Blade performance changes dramatically depending on concrete type.

Concrete type → blade requirement

Step 2: Match the blade to your cutting setup

Before buying, confirm these six non-negotiables:

• Concrete hardness and abrasiveness
• Presence of reinforcement (rebar or mesh)
• Wet or dry cutting method
• Machine type (cut-off saw, floor saw, bench saw)
• Required cutting depth and blade diameter
• Expected daily or weekly usage

This checklist alone prevents most wrong purchases.

Step 3: Choose the correct blade quality tier

Blade quality tiers exist for a reason. Over-specifying wastes money; under-specifying costs time.

Blade quality tiers explained

Step 4: Wet cutting vs dry cutting

Choosing the correct cutting method improves both performance and blade life.

Wet cutting

Use when:

• Cutting reinforced or very hard concrete
• Running long, continuous cuts
• Using floor saws or bench saws

Benefits:

• Reduced heat build-up
• Longer blade life
• Cleaner, more stable cuts

Dry cutting

Use when:

• Making short, intermittent cuts
• Water access is limited
• Using handheld cut-off saws

Step 5: Blade cutting vs diamond core drilling

Not every concrete job should be done with a blade.

Use a diamond blade if:

• You need straight or linear cuts
• You are cutting slabs, walls, or expansion joints

Use a diamond core drill if:

• You need circular openings
• You want minimal breakout and clean finishes
• You are installing pipes, cables, or ventilation

Choosing correctly reduces finishing time and material damage.

Common buyer mistakes to avoid

• Using general-purpose blades on reinforced concrete
• Choosing based on unit price only
• Ignoring safe operating speed ratings
• Using light-duty blades for continuous cutting
• Mixing blade types across machines without checking compatibility

Avoiding these mistakes saves both time and budget.

What professional-grade blade solutions usually offer (example)

Professional blade ranges typically share these characteristics:

• Designed for modern high-speed saws
• Separate blades for different materials
• Multiple quality tiers for different workloads
• Clear safety and compliance references (e.g. EN 13236)

OTEC diamond blades by CMT Group are one example of this structured, professional approach, offering material-specific designs, tiered performance levels, and compatibility with modern site equipment—without relying on one-size-fits-all solutions.

Final decision checklist (save this)

Before ordering, confirm:

• Concrete type identified
• Reinforcement accounted for
• Correct blade diameter and bore
• Machine type and RPM matched
• Wet or dry method chosen
• Correct quality tier selected

If all six boxes are ticked, your blade choice is almost always correct.

FAQ – Concrete Cutting Blades (UK)