TopTank 230 Litre Rectangular Loft Water Tank

TopTank Rectangular Loft Tank

The TopTank 230 Litre Tank provides a heavy-duty water storage solution specifically engineered for confined ceiling spaces and attic installations. This UV-stabilized polyethylene vessel meets the rigorous demands of residential and commercial plumbing systems where vertical clearance remains limited. The rectangular footprint allows for efficient placement across structural joists to ensure stable weight distribution.

Built for the Job

Plumbers and site supervisors select this low-profile storage unit for its ability to pass through standard loft hatches without structural modifications. The tank serves as a primary header tank for gravity-fed cold water systems or as a reserve for domestic backup. Its robust construction resists the extreme temperature fluctuations often found in roof voids. The molded ribbing provides the necessary hoop strength to prevent wall bulging when the unit reaches full capacity. This design ensures the tank maintains its structural integrity over decades of continuous service in harsh environments.

• Gravity-fed domestic cold water systems

• Secondary water storage for residential backup

• Header tank applications for central heating expansion

Product Highlights

Rotational Molded Construction

The unit features a seamless single-piece build that eliminates joints or welds where leaks typically occur under pressure.

Material Standards

• Manufactured from 100% food-grade polyethylene material
• UV-stabilized to prevent brittleness and degradation from sun exposure

Structural Reinforcement

Integrated external ribs provide high impact resistance and prevent deformation during the expansion and contraction cycles of water filling.

Technical Specifications

What’s Included

• 1 x 230 Litre Rectangular Polyethylene Tank Body

• 1 x Heavy-duty secure-fit lid

On-Site & Workshop Notes

• Ensure the supporting surface is flat, level, and capable of holding 230kg plus the weight of the vessel.

• Use standard plastic tank connectors for inlet and outlet holes to maintain a watertight seal without over-tightening.

• Install the storage unit away from direct heat sources or sharp structural components in the roof space.

• Verify that the overflow pipe diameter matches or exceeds the inlet pipe diameter to prevent accidental flooding.