Wall Chasers

About Wall Chasers

Wall chasers are specialised power tools designed to cut precise parallel channels into masonry, brick, concrete and blockwork for concealing electrical cables, plumbing pipes and other building services. Using two diamond-tipped blades operating simultaneously, these machines create clean, uniform grooves that meet UK building regulations whilst dramatically reducing dust compared to angle grinders. MyToolShed.co.uk stocks professional wall chasers from leading manufacturers including DeWalt, Makita, Festool, Flex, Einhell and Draper, available in both 240v corded and high-voltage cordless configurations.

Modern wall chasers feature adjustable cutting depths typically ranging from 10mm to 40mm, variable blade spacing to accommodate different cable and conduit sizes, and integrated dust extraction ports for connection to vacuum systems. Premium models incorporate brushless motors for improved efficiency and runtime, guide rail compatibility for extended straight cuts, and advanced safety features including blade guards and soft-start technology. Whether you need a compact cordless chaser for retrofit installations or a robust 240v model for high-volume commercial work, MyToolShed.co.uk offers machines suitable for professional tradespeople and serious DIY enthusiasts.

Applications

Wall chasers are essential tools for various trades and applications:

• Electricians: Creating channels for cable runs, rewiring projects and Part P compliant installations in safe zones
• Plumbers and heating engineers: Cutting grooves for central heating pipes, radiator feeds and underfloor heating systems
• Kitchen and bathroom fitters: Installing service routes for appliances, extraction systems and sanitaryware
• General builders: Retrofitting services during renovation projects, extensions and property conversions
• Data installers: Running network cabling, TV aerials and smart home wiring through solid walls
• Maintenance contractors: Adding new services in commercial and industrial properties

Choosing The Right Wall Chasers

Power Source: Corded 240v models provide consistent power for demanding commercial applications, whilst 36v-54v cordless options offer flexibility for site work without mains access. Consider compatibility with existing battery platforms like DeWalt XR FlexVolt or Makita LXT.

Disc Size and Cutting Depth: Choose between 125mm, 140mm or 150mm disc diameters depending on required depth. Ensure your selected model achieves sufficient depth (typically 20-40mm) for standard UK conduit sizes and cable installations under BS 7671 regulations.

Dust Extraction: Effective dust management is crucial for HSE compliance regarding respirable crystalline silica exposure. Look for models with robust shrouds and compatibility with Class L or M rated vacuum extractors for virtually dust-free operation.

Motor Technology: Brushless motors offer superior efficiency, extended runtime and reduced maintenance compared to brushed alternatives. Corded models range from 1,200W to 2,400W, with higher wattage suited to intensive use in hard materials.

Build Quality: Professional-grade machines from DeWalt, Makita and Festool withstand daily site demands, whilst budget options suit occasional DIY use. Consider warranty coverage and parts availability when comparing models.

Safety Information

Always wear appropriate PPE including safety glasses (BS EN 166), FFP3-rated respiratory protection, hearing protection and heavy-duty gloves. Use a cable detector to check walls thoroughly before cutting. Respirable crystalline silica generated when cutting masonry poses serious health risks—always connect suitable dust extraction. Inspect diamond blades before use for damage and ensure correct fitting. Use corded models with RCD protection (30mA) and verify tools are regularly PAT tested. Never bypass safety guards or operate damaged equipment.

Frequently Asked Questions

What's the difference between a wall chaser and using an angle grinder?

Wall chasers use two parallel blades simultaneously to create uniform channels in a single pass, whereas angle grinders require multiple passes. Wall chasers offer superior dust extraction, better depth control, reduced vibration and significantly improved productivity for chasing applications, making them the professional choice for electrical and plumbing installations.

How deep should I cut for electrical cable installations?

Most wall chasers offer adjustable depths between 10mm and 40mm. For BS 7671 compliant electrical installations, typical chases for twin-and-earth cable require 20-25mm depth within prescribed safe zones. Deeper cuts accommodate conduit or multiple cable runs whilst maintaining wall integrity and meeting Part P Building Regulations.

Do I really need dust extraction with a wall chaser?

Absolutely essential. Cutting masonry generates harmful respirable crystalline silica (RCS) that causes serious respiratory conditions including silicosis and lung cancer. HSE regulations mandate effective dust control on construction sites. Proper extraction also improves visibility, reduces cleanup time and creates safer working conditions. Always use a Class L or M vacuum extractor.