Next-day delivery available - On selected items ordered before 12pm


One Piece Tanks


Our one piece tanks are suitable for a versatile range of domestic and commercial applications. The water tanks are ideal for storing water up to 30°C. We use specialist resins that enable the storage of mild and aggressive chemicals.

Our range of one piece tanks vary from 45 litres to 16,000 litres. These cold water storage tanks are ideal for restricted spaces, and we provide bespoke water tanks to fit the exact dimensions/space required. 

Next day delivery available! T&Cs apply

If you have any questions, feel free to call us or use our quote form

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One Piece Water Tank Features

GRP one piece tanks are manufactured to the BS13280:2001 (BS EN13280) standard using high-quality glass-reinforced polyester (GRP) resins. The tanks comply with UK Water Supply Regulations 1999 and are Regulation 4(1)a Approved.

Tricel is an accredited and fully certified GRP water storage tank manufacturer and supplier. We pride ourselves on operating to the highest professional standards. We are committed to supplying our customers with reliable, market-leading, high-quality products, and we always strive to provide the most appropriate solutions to fulfil clients’ water storage piece tank used as a water tank for loft

GRP One Piece Tank Specifications

  • Insulated or uninsulated tanks are available depending on the application.
  • The standard tank colour is Grey 00-A-05. We can supply in any BS5252 or RAL colour to suit your requirements.
  • Next day delivery – T&Cs apply.
  • Twin Compartment options available to provide continuous supply during maintenance periods.
  • Bespoke tanks made to order are available.
  • Corrosion-free – virtually NO maintenance required.
  • Tanks can be supplied as a two part tank for restricted access.
  • Fully self-draining tanks are available.
  • All our one piece tanks comply with all relevant British Standards and Water Regulations.

HCFC & CFC free encapsulated Insulation:

  • 25mm – 0.85 w/m2 Deg C
  • 50mm – 0.40 w/m2 Deg C

One Piece Tank Parts and accessories

  • Ball Valves
  • Tank Connectors
  • Level Switches
  • Gauges
  • Tank Lids
  • Ladders
  • Condensation Tray
One piece tanks

Bespoke One Piece Tanks

In addition to our standard tank range we offer customers bespoke water tanks made to order.

Key Features:

  • CAT 5 Type AA/AB airgaps
  • Raised float valve to achieve greater useable capacity
  • Division can be included to provide twin compartment
  • Two part tank options available
  • Reinforced base
bespoke one piece tanks
truck with one piece tanks going out for next day delivery

Potable vs Non-Potable water storage solutions

Tricel one piece tanks also known as cistern tanks are fully certified for the use of potable water. Our WRAS Approved GRP water tanks ensure you meet your health and safety obligations.

In order to fulfil health and safety directives, which states water, that is to be or may be consumed by humans, must be held in Insulated tanks, and that all potable water tanks must meet the following criteria.

Potable water tank specifications:

  • Factory insulated with CFC Free Foam on all sides (25mm standard insulation)
  • Manufactured from Fibreglass
  • Lids must be sealed and insulated
  • Potable water tanks must have screened inlet and overflows
  • Tanks must be insulated to reduce the risk of freezing in winter and for temperature control during the summer.

Terms and conditions: *Next Day Delivery Terms and Conditions: Our Next Day Delivery offer is subject to location and applies to in-stock one-piece tanks only when ordered before noon. Orders placed after this cutoff time will be processed for delivery on the following business day. Please note that availability may vary depending on product demand and stock levels. While we strive to fulfil orders promptly, unforeseen circumstances such as adverse weather conditions or transportation delays may impact delivery times. We cannot guarantee specific delivery times for Next Day Delivery orders, but we endeavour to expedite the shipping process. For further inquiries or assistance, please contact our customer service team.

One piece tank

Download our full list of One Piece Tank options

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key features

water blue art symbol

Wide Range of Sizes 

45 Litres to 16,000 Litres, Standard Tanks

bespoke water tank - blue art

Bespoke Options

Custom One Piece Tank Options

zero maintenance - blue water art

Maintenance Free

Virtually Zero Maintenance Required

Recent Projects

Extensive industry experience, manufacturing since 1973.

Tricel manufacture deliver & install cold water storage tanks across a wide range of industry sectors throughout Ireland & the UK. Tricel also provide import/export services for our international clients. Tricel has been Manufacturing water tanks since 1973, and are made from Glass Reinforced Plastics (GRP). This top quality material offers outstanding capabilities including long life, durability and is a cost-effective solution for water storage even in the harshest environments. Cold water storage is available for both potable and non-potable applications.


GRP Water Storage Tank Installations


Data Centres


Government Buildings


Airports & Hotels



60 years in business

A highly successful multinational corporation with over 60 years’ valuable industry experience

Fully Customisable Tanks

Tanks available for all capacities, 43 litres to 4,651,290 litres. Larger tanks available on request

Fast Delivery

On-time delivery is a core requirement of our successful business operations