Slot-Block Water-Filled Barrier Set

Product Overview:
The Slot-Block Water-Filled Barrier (sold as a set of 2) is a compact ballast system designed to secure standard 3.5m temporary mesh fencing without conventional concrete fence feet and projecting stabiliser braces. Two interlocking 1.75m units support each fence panel, creating a 3.5m base with a reduced footprint that helps minimise trip hazards and preserve valuable working space. It is particularly useful where fencing must be installed beside pedestrian routes, access points or confined construction areas.

Each unit weighs approximately 14kg when empty for easier handling and reaches around 160kg when filled, providing 320kg of ballast per complete pair. The durable polyethylene construction is reusable, weather-resistant and suitable for demanding temporary installations. An integrated bolt system clamps the fencing securely, while the connected arrangement can accommodate changes in direction. When correctly assembled and water-filled with a standard mesh panel, the system has been independently wind tested to 57mph. It provides stable temporary demarcation but should not be treated as a vehicle-impact protection barrier.

What’s Included
• 2 x Slot-Block Water-Filled Barriers

You May Also Need
• 1 x Anti-Climb Temporary Fence Panel – (H)2m x (W)3.5m
• Temporary Fence Couplers – for connecting adjoining fence panels
• Anti-Tamper Couplers – where additional security is required
• Water supply – for filling and ballasting the barriers after positioning

Key Features
• Supports standard 3.5m temporary mesh fence panels
• Water-filled pair provides approximately 320kg of stabilising ballast
• Independently wind tested to 57mph when correctly installed
• Compact footprint reduces reliance on projecting stabiliser braces
• Helps minimise trip hazards around temporary fence lines
• Lightweight when empty for easier positioning and site removal
• Durable, reusable and recyclable polyethylene construction
• Interlocking design accommodates straight runs and changes in direction

Typical Applications
• Construction site perimeters
• Utility and maintenance works
• Temporary pedestrian segregation
• Roadworks and traffic-management sites
• Public events and crowd management
• Restricted-access work areas
• Emergency repairs
• Confined urban sites

Frequently Asked Questions:
Q. How many Slot-Block units are required for each fence panel?
A. Two 1.75m Slot-Block units are used together to support one standard 3.5m-wide temporary mesh fence panel.

Q. Is the temporary mesh fence panel included?
A. The Slot-Block is normally supplied as a water-filled fencing base. Mesh panels, couplers and other fittings should be ordered separately unless the product listing confirms their inclusion.

Q. How heavy is the system when filled?
A. Each unit weighs approximately 14kg empty and 160kg when filled. A complete two-unit arrangement provides approximately 320kg of ballast.

Q. Can the system withstand exposed or windy conditions?
A. A correctly installed and water-filled Slot-Block system with a standard mesh panel has been independently wind tested to 57mph. A site-specific risk assessment remains necessary, particularly in exposed locations.

Q. Can Slot-Block barriers be used around corners?
A. Yes. The interlocking arrangement allows changes in direction, including layouts approaching 90 degrees. Corners and irregular runs should be planned carefully to maintain correct panel support and secure fixings.