Whats an Impact Drill: The Definitive UK Guide to Percussion Power Tools

In the crowded world of power drills, the term “impact drill” is often misunderstood. This comprehensive guide explains what Whats an impact drill actually does, how it differs from related tools, and how to choose the right model for your DIY or trade projects. Whether you’re planning to drill into brick, concrete, or timber, understanding the specifics of an impact drill will save time, reduce frustration, and help you achieve cleaner, more accurate results.

Whats an impact drill: the basics you need to know

Whats an impact drill, at its core, is a drill that combines rotary motion with a percussive hammering action. The result is a tool that can bore into hard materials such as masonry with less effort than a standard drill. While a traditional drill relies on the rotation alone, an impact drill adds a series of rapid forward-and-back hammering motions that transfer impact energy directly to the drill bit. This makes it possible to break up the material and push the bit forward, creating a clean bore in concrete, brick, or stone.

Another way to think about Whats an impact drill is as a hybrid between a drill and a hammering tool. When you set the tool to hammer mode, the rotation is still present, but the hammering action adds a piston-like impact that helps the bit bite into tough substrates. In many models, you can switch between standard drilling (rotation only) and hammer drilling (rotation plus percussive impact).

Whats an impact drill vs hammer drill: what’s the difference?

There’s often confusion between Whats an impact drill and a hammer drill. In the UK, these terms are sometimes used interchangeably, but there are subtle distinctions that can affect your choice for a given job:

• (or percussion drill) generally refers to a drill that delivers a percussive strike in addition to rotation. The emphasis is on the combined action to breach masonry surfaces.
• Hammer drill is a common term used for a device that uses a hammering mechanism in the drill chuck area to deliver percussive force. In many consumer models, “hammer drill” and “impact drill” describe the same or very similar tool, though some manufacturers distinguish between a purely hammering action and a more variable, adjustable percussion action.

When deciding, think about the materials you will encounter and the level of control you need. If you’re mostly drilling into brick walls or concrete blocks, a model labelled as an impact or hammer drill is usually appropriate. For lighter masonry work or drilling into timber, a standard drill may suffice. Some professionals prefer the term “percussion drill” for clarity, but the essential function remains the same: rotation plus percussive action.

How Whats an impact drill works: inside the mechanism

Understanding the mechanics can help you troubleshoot and select the right tool. In brief, Whats an impact drill operates with a few core components:

• Motor and gear train: The motor provides rotational power, which is transmitted through gears to the chuck and bit.
• Impact mechanism: A separate set of components accelerates an anvil or piston that periodically hits the drill bit while it rotates.
• Clutch and electronic control: Modern models offer variable speed and torque control that allows you to fine-tune how aggressively the bit is driven into the material.
• Chuck and bits: A robust chuck (often keyless) holds drill bits securely; you’ll want masonry bits for concrete and camouflaged bits for brick or stone.

When you choose Whats an impact drill, look for a tool with a reliable impact rate (measured in impulses per minute, IPM) and a robust motor that can sustain continuous use without overheating. Some models include a three- or four-mode selector, allowing you to switch from drilling to chiselling or screw driving as needed.

Whats an impact drill in context: what it can do well

Whats an impact drill excels in several common tasks:

• Drilling into concrete, brick, or stone for anchor points, electrical conduits, or plumbing passes.
• Anchoring into masonry with masonry screws or anchors that require a reliable bite.
• Drilling into hard plaster or block walls where a standard drill would struggle or overheat.
• Light chiselling duties when paired with the appropriate chisel attachments (some models include a dedicated chisel mode).

It’s also important to recognise the limits of Whats an impact drill. For very hard materials such as reinforced concrete or steel, you may require more specialised equipment, such as a rotary hammer or a SDS drill. In many cases, a reputable impact drill will be perfectly adequate for home improvements and moderate professional work.

What to look for when choosing Whats an impact drill

Selecting the right Whats an impact drill depends on how you plan to use it. Consider the following essential features and specifications:

Power and performance

Look at the motor wattage and the voltage rating for cordless models. Higher voltage often means more power for demanding jobs. Corded drills deliver consistent power but limit mobility by the length of the cord. For frequent masonry work, a more powerful model is worth the investment.

Impact rate and mode options

A good Whats an impact drill will offer a range of IPM (impacts per minute) values. A variable-speed trigger helps you control the bit’s bite, while an adjustable hammer action lets you switch to standard drilling when working in wood or metal. Some models provide a dedicated hammer-only mode for chiselling tasks.

Torque and speed control

Multiple speed settings and a respectable torque range enable you to drill a variety of materials with minimal wandering or bit wear. Soft-start is a welcome feature that prevents abrupt wheel spin when you first apply power, protecting both the workpiece and the chuck.

Chuck type and durability

Most impact drills use a keyless chuck for quick bit changes. Look for a chuck with robust grip and a secure mechanism that won’t loosen under vibration. If you anticipate frequent drilling into masonry, ensure your bits are well maintained and sharp for best results.

Ergonomics and vibration

Because percussion work can cause vibration, choose a model with good weight distribution, a comfortable handle, and vibration-damping features. A lighter tool with a solid grip can reduce fatigue on longer jobs.

Battery chemistry and life (for cordless models)

Brushless motors are more efficient and deliver longer run time per charge. Lithium-ion cells are common and provide balanced energy density and voltage. Consider models with quick-charge capabilities and interchangeable batteries so you can keep working with minimal downtime.

Corded vs cordless Whats an impact drill: which should you buy?

Two broad categories exist, each with pros and cons:

• Corded impact drills: Consistent power, unlimited runtime, ideal for heavy masonry work. They’re typically lighter and more affordable for frequent, high-demand use.
• Cordless impact drills: Maximum flexibility, safer to use in tight spaces, and great for general DIY. Run-time depends on battery capacity; high-quality packs can be pricey but save time on set-ups and movement around a site.

When deciding, think about your workspace. A workshop with easy access to electrical outlets or a fixed job site benefits from a corded model. For attic, ladder, or remote work, cordless models offer real convenience. If you often switch between drilling timber, metal, and masonry, a versatile tool with adjustable modes and robust battery life is worth the investment.

Attachments and accessories that maximise Whats an impact drill

To get the most from Whats an impact drill, pair it with the right accessories:

• Masonry drill bits: Carbide-tipped bits designed to endure drilling into brick and concrete. Start with a smaller pilot hole to reduce bit wandering.
• Wood and metal bits: For non-masonry tasks, thinner drill bits with appropriate coating (e.g., HSS) work well when in drilling mode.
• Hammer chisels: If your model includes a chiselling function, pick chisels designed for masonry or demolition work.
• Depth stop: Helps to achieve consistent hole depth, a critical factor in anchor installation.
• Second battery or a spare cord: Especially for cordless models, swapping batteries prevents downtime.

Maintenance and care for Whats an impact drill

Proper maintenance keeps Whats an impact drill performing at its best and extends its life:

• Clean the ventilation slots after heavy use to prevent overheating and debris buildup.
• Lubricate moving parts if the manufacturer recommends it; many modern models are sealed and require minimal maintenance beyond cleaning.
• Store drill bits and accessories in a dry environment to prevent corrosion.
• Inspect the chuck for wear; a loose chuck can cause slippage and poor hole quality.
• Regularly check the battery contacts on cordless models for cleanliness and secure connection.

Safety first: how to use Whats an impact drill responsibly

Always prioritise safety when using Whats an impact drill. Here are best practices to keep you safe and productive:

• Wear eye protection, hearing protection if the job is loud, and sturdy gloves if you’re handling coarse masonry.
• Clamp workpieces securely and use a stable surface to avoid slips that can cause misdrills or injuries.
• Choose the correct drill bit and ensure it is seated properly in the chuck before switching on the tool.
• Keep hands away from the bit area and use a depth stop to prevent accidental over-penetration.
• Let the tool do the work; don’t force it. Applying excessive pressure can wear the bit and reduce control.

Whats an impact drill: common myths debunked

There are a few persistent myths around Whats an impact drill. Here are the facts:

• Myth: An impact drill can replace all tools.
  Reality: It’s superb for masonry and mixed-material tasks, but steel drilling or precision chiselling may require specialised equipment.
• Myth: Higher torque always means better performance.
  Reality: Torque must match the job. Too much torque can damage bits, the workpiece, or the drill itself.
• Myth: Cordless models always underperform.
  Reality: Modern cordless tools offer outstanding power and run-time, suitable for most DIY and many professional tasks.

Practical tips for using Whats an impact drill effectively

To maximise your results, consider these practical tips:

• Start with a pilot hole in masonry to improve bite and accuracy.
• Use sharp masonry bits; dull bits waste energy and produce rough holes.
• In masonry, work in stages: drill, pause, and allow cooling to prevent overheating.
• For long holes, periodically withdraw the bit to clear debris and reduce heat buildup.
• Always confirm the material hardness and adjust the hammer action accordingly.

Frequently asked questions about Whats an impact drill

What’s the best Whats an impact drill for DIY?

For most DIY tasks around the home, a mid-range cordless model with a good battery life and a range of speeds is ideal. Look for reliable brands offering brushless motors, multiple speed settings, and a comfortable grip.

What’s the difference between an impact drill and an impact driver?

While both employ rotational and percussive action, an impact drill is designed for drilling into masonry and various materials with drill bits. An impact driver, by contrast, excels at driving screws and bolts with high torque but typically uses hex shank screwdriver bits rather than standard drill bits. If you’re primarily driving fasteners, an impact driver may be more efficient; for holes in masonry, an impact drill is the better choice.

Can I use Whats an impact drill on metal?

Yes, you can drill metal with an impact drill, but use the appropriate HSS metal drill bits and set the tool to drilling mode (non-hammer) to avoid unnecessary bit wear. For heavy metal work or long holes, a dedicated metal drill or a drill press is preferable for precision and control.

Are there safety considerations when using a cordless Whats an impact drill?

Cordless models offer portability but depend on battery charge. Always use a fully charged battery, ensure the chuck is secure, and avoid using damaged bits. Charge batteries according to manufacturer guidelines and store them away from extreme temperatures.

Conclusion: Whats an impact drill and when to reach for one

Whats an impact drill is a versatile tool that sits at the intersection of a standard drill and a hammer drill. It provides the rotational force needed for drilling and a determined percussive action that helps you tackle masonry with confidence. By understanding its operation, comparing corded versus cordless options, and choosing the right features, you can ensure crisp holes, reduced effort, and improved efficiency on a wide range of projects. Whether you’re mounting shelves, installing rawl plugs, or laying fixtures into brick walls, the right Whats an impact drill will be a dependable companion in your workshop.

Invest time in selecting a model with reliable build quality, a comfortable grip, and a balanced feel. With the right attachments and careful technique, Whats an impact drill becomes an indispensable tool that makes quick work of tough materials while keeping you safe and accurate. If you’re in any doubt, consult with a hardware specialist or test a few models in person to find the balance of power, control, and comfort that suits your particular projects.