About

Est. 2003

About Pnu-Point Mortar Pointing Gun

In 2002, three individuals were repointing a 200-year-old farm building. They had invested in a mechanical electric-powered pointing tool, which doubled their pointing rate when it worked. However, it frequently malfunctioned: stones would block the auger, drills burned out, bearings wore out, and the auger itself degraded. Despite these issues, they recognized the potential of mechanical pointing for profitability and sought a better solution.

They aimed to eliminate breakdown causes by creating a simple tool with minimal moving parts. Manual "mastic gun" approaches were tried but discarded due to wrist strain and wear. A pneumatic-powered mastic gun was next, but piston wear and mortar-water separation led to failure. Eventually, they developed a vertical tool where the mortar acted as its own piston, which worked effectively. Thus, the Pnu-Point Pointing Tool was born.

In 2003, Pnu-Point Ltd was founded, patents were obtained, tools were designed, and the first Pnu-Point was sold.

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The Pnu-Point Tool

The tool's body is roto-moulded from polyethylene, making it virtually indestructible and easy to clean. The standard lid is injection-moulded PVC, a stiff and strong inert plastic. Nozzles are injection-moulded nylon with stainless steel inserts. Valves are durable, easily purchasable stock items, and fastenings are stainless steel.

All materials and components are selected for durability and longevity, ensuring the Pnu-Point is reliable and long-lived.

The Pnu-Point Tool comes with a set of nozzles, spare gaskets and O-rings, O-ring lubricant, full instructions, all packed in a durable aluminium toolbox. A full year's warranty is offered for customer satisfaction.

Advantages of the Pnu-Point Pointing Tool

Quick and easy to fill, use, and clean
Light and well-balanced
No vibration
At least five times faster than manual methods
Compatible with cement and lime mortars
Compatible with high-performance mortars
Fills joints from the back, ensuring full joint filling
No mortar bleed onto the job's face
No wearing parts

Uses of the Pnu-Point Pointing Tool

The Pnu-Point pressure pointing tool is utilized by:

General builders (masons in the US) for renovation and repair
Specialist pointing (tuck-pointing in the US) contractors
Paving contractors
Landscape gardeners
Specialist brick slip cladding installers

It's used to point (tuck point) brickwork and stonework of:

Domestic properties with cement or lime mortars
Commercial properties with cement or lime mortars
Bridges, tunnels, chimneys, and other civil engineering projects using high-strength mortars
Sea walls
All types of paving

An increasingly important application is pointing brick slips for building cladding, both on-site and in factory settings.

Essential Requirements for the Pnu-Point Tool

The Pnu-Point pointing tool is powered by compressed air. The recommended minimum compressor specifications are:

1 KW (1½ HP) motor
20-litre (5-gallon) air storage tank, maintaining steady air pressure and running approximately 1 minute in 5, within most compressors' duty cycles for cool and extended operation
Free air delivery of 0.15 m³/min (5 cu ft/min)

The compressor must be regulatable down to 2 bar (30 PSI). The Pnu-Point tool comes standard with a 1/4 inch BSP PCI quick-release fitting, with other fittings available upon request.

A compressor meeting these specifications will operate efficiently, ensuring a quiet environment and prolonged tool life.

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