Pond Fibreglassing Specialists in Cambridgeshire
GRP Pond and Swimming Pool Fibreglassing Specialists
That Pond Guy provides professional pond fibreglassing services across Cambridgeshire, delivering seamless GRP linings for ponds, koi ponds, swimming ponds, and pools. Fibreglass lining offers a durable, long term waterproof solution for both new pond builds and refurbishment projects, making it a popular choice throughout the county.
We regularly carry out fibreglass pond lining across Cambridgeshire, working on private gardes, rural properties, estates, and landscaped water features. Each project is planned carefully to suit the pond structure, access constraints, and intended use.
Professional GRP Pond Lining Services in Cambridgeshire
Fibreglass pond lining creates a fully bonded, watertight surface that follows the exact shape of the pond. Unlike traditional liners, GRP does not crease, lift, or degrade over time, making it ideal for ponds where reliability, appearance, and longevity are important.
Our Cambridgeshire fibreglassing services are suitable for:
• Koi ponds
• Garden and ornamental ponds
• Wildlife and natural ponds
• Swimming ponds and pools
• Concrete and block pond refurbishments
Once cured, the fibreglass surface forms a smooth, non porous finish that helps reduce algae attachment and makes long term maintenance far easier.
Converting Liner Ponds to Fibreglass in Cambridgeshire
Many ponds across Cambridgeshire were originally constructed using rubber liners. Over time, liners can become brittle, punctured, or poorly seated, leading to leaks and recurring maintenance problems.
We specialise in converting liner ponds to fibreglass. This process involves removing the existing liner, preparing the pond structure correctly, and installing a complete GRP lining system. The result is a permanent, seamless finish that removes common liner related issues and provides long term reliability.
Our Fibreglassing Process
All fibreglass pond lining projects in Cambridgeshire follow a structured and proven process. The pond is first prepared to ensure a clean, stable surface suitable for bonding. Where required, insulation boards can be installed to improve heat retention and create a smooth, consistent substrate.
High quality fibreglass matting and resin are then applied by hand, followed by a durable topcoat. This creates a strong, watertight shell designed for long term performance.
Why Choose That Pond Guy for Pond Fibreglassing in Cambridgeshire
Choosing the right installer is essential for achieving a long lasting fibreglass pond lining. At That Pond Guy, we focus on correct preparation, quality materials, and careful application rather than rushed installations.
Clients choose us because we offer:
• Extensive fibreglass pond lining experience
• Proven GRP installation methods
• Clear, honest advice
• Durable, seamless finishes
Every project is treated individually to ensure the finished pond is both practical and visually clean.
Learn More About Pond Fibreglassing
Below you’ll find detailed guides covering common questions about fibreglass lining, preparation, lifespan, and comparisons with other lining methods. These resources explain the process in more depth and help you decide whether fibreglass is the right solution for your pond or pool.
Serving Cambridgeshire and Surrounding Areas
We work across Cambridgeshire, carrying out fibreglass pond lining for a wide range of properties and pond types. From garden ponds to koi ponds and bespoke swimming ponds, our experience allows us to adapt to different site conditions and access requirements.
All fibreglassing work is completed by our dedicated installation team, ensuring consistent workmanship and attention to detail.
Get a Quote for Pond Fibreglassing in Cambridgeshire
If you are considering fibreglass lining for a pond or swimming pool in Cambridgeshire, get in touch to discuss your project. We’re happy to offer practical advice and provide a clear quotation based on your pond size, structure, and requirements.
Contact Us
Please get in touch to discuss your pond needs and we will get back to you as soon as possible.
matt@thatpondguy.co.uk
07368 372129
Frequently Asked Questions – Pond Fibreglassing in Cambridgeshire
What is fibreglass pond lining?
Fibreglass pond lining, also known as GRP lining, is a seamless waterproof system created by applying fibreglass matting and resin directly to the pond structure. Once cured, it forms a rigid, non porous shell that completely seals the pond. Unlike flexible liners, fibreglass is bonded to the surface and does not move, wrinkle, or degrade over time.
Is fibreglass suitable for ponds in Cambridgeshire?
Yes. Fibreglass is suitable for a wide range of ponds across Cambridgeshire, including garden ponds, koi ponds, wildlife ponds, and swimming ponds. It is particularly effective for ponds built from concrete, blockwork, or rendered structures and is also ideal for upgrading older liner ponds that have developed leaks or ongoing maintenance issues.
Can you convert an existing liner pond to fibreglass?
Yes. We regularly convert liner ponds to fibreglass throughout Cambridgeshire. This involves removing the existing liner, preparing the pond structure correctly, and installing a complete GRP lining system. The result is a permanent, seamless finish that eliminates common liner issues such as folds, punctures, lifting edges, and long term leaks.
How long does fibreglass pond lining last?
When installed correctly, fibreglass pond lining can last several decades. It does not perish like rubber liners and is resistant to UV exposure, temperature changes, and general wear. Many fibreglass ponds remain fully watertight for 25 years or more with minimal maintenance.
Is fibreglass safe for koi and fish?
Yes. Once fully cured, fibreglass pond lining is completely safe for koi, fish, and other aquatic life. The smooth, non porous surface helps reduce bacteria build up and makes water quality easier to manage, which is especially beneficial for koi ponds.
Can fibreglass be installed in any pond shape or size?
Fibreglass is extremely versatile and can be applied to almost any pond shape or size. Because it is laid by hand, it follows the exact contours of the pond, making it suitable for straight sided ponds, curved designs, formal ponds, and more complex shapes that would be difficult to line with traditional liners.
Do you install insulation before fibreglassing koi ponds?
Where required, we can install insulation boards before fibreglassing, particularly for koi ponds. Insulation helps reduce heat loss, improve temperature stability, and create a smooth substrate for the fibreglass lining. This is popular with koi keepers looking to improve efficiency and fish health.
How long does the fibreglassing process take?
Most fibreglass pond lining projects take between a few days and around a week, depending on the size of the pond, access, preparation requirements, and weather conditions. We always allow sufficient time for proper preparation and curing to ensure a durable, high quality finish.
Does fibreglass reduce algae growth?
Fibreglass does not prevent algae entirely, but the smooth, non porous surface makes algae less likely to attach compared to rough concrete or folded liners. This makes cleaning easier and helps maintain clearer water when combined with suitable filtration and regular maintenance.
Can fibreglass be used for swimming ponds and pools?
Yes. Fibreglass is commonly used for swimming ponds and pools due to its watertight, hygienic finish and durability. It provides a clean, smooth surface that is easy to maintain and works well in natural swimming environments when paired with appropriate filtration systems.
Do you carry out fibreglass pond lining across all of Cambridgeshire?
Yes. We carry out fibreglass pond lining across Cambridgeshire, covering residential gardens, rural properties, estates, and commercial sites. Each project is assessed individually to ensure access, preparation, and installation are planned correctly.
How do I get a quote for fibreglass pond lining in Cambridgeshire?
To get a quote, simply contact us with details of your pond size, structure, and whether it is a new build or a conversion from a liner. We’ll provide clear advice and a straightforward quotation based on your specific requirements.
Planning a pond fibreglassing project in Cambridgeshire
Because this is a travelling specialist service, we price Cambridgeshire work from drawings, dimensions and site photographs before agreeing dates. Good preparation is particularly important: the shell must be dry, structurally sound and accessible for materials, extraction and weather protection.
We cover suitable projects around Cambridge, Ely, Huntingdon, St Neots, Newmarket and surrounding areas. Coverage is not a promise that every small or unprepared job will be economical: we would rather assess the project honestly than add a long-distance call-out to a job that is not ready.
Information we need before quoting
- Internal length, width and depth, including shelves, steps and unusual shapes.
- Clear photographs of the complete shell and access route.
- Details of drains, returns, skimmers, pipework and any viewing window.
- The substrate and who is responsible for rendering, drying and weather protection.
- The build programme, including when copings and surrounding landscaping will be fitted.
A proper quotation reflects surface area, geometry, preparation and travel—not just pond volume. Read our pond-preparation guide and installation guide before finalising the shell.
Check the finish, preparation and aftercare
The finished lining should be continuous and easy to inspect around every detail. Once cured, it still needs to be protected from sharp objects and filled in accordance with the installation advice. If the pond is part of a koi build, filtration, pipe testing and window installation should be coordinated before the final laminate is applied.
Compare the full pond fibreglassing service, read fibreglass versus pond liner, and see genuine feedback on our testimonials page. To request an assessment, send us the measurements and photographs.


