Converting a Liner Pond to a Fibreglass Pond
Is your pond liner starting to show its age with leaks, folds, or creases? What if we told you that we can upgrade your pond to a sleek, durable fibreglass finish without dismantling, lifting slabs, or changing the existing structure? Converting your old liner pond to a fibreglass pond is the ultimate solution for achieving a watertight and durable finish, all while preserving the existing setup of your pond. At That Pond Guy, we specialise in transforming tired ponds into high-quality fibreglass installations that last for decades.
Why Choose Fibreglass Over a Liner?
Traditional pond liners often suffer from issues like wear and tear, punctures, and unsightly folds that detract from the beauty of your pond. While replacing a liner is an option, it’s far from the most effective solution.
Fibreglass is:
- Stronger and More Durable: Unlike liners, fibreglass provides a robust and seamless finish that can withstand years of use without tearing or degrading.
- Visually Appealing: Say goodbye to the creases and folds of liners. Fibreglass offers a smooth, clean look with a professional black gel-coat finish.
- Low Maintenance: Fibreglass is much easier to clean and maintain, helping you keep your pond in pristine condition.
- Long-lasting: With proper installation, a fibreglass pond can last for decades without the need for costly repairs.
The Process: Transforming Your Pond
Our conversion process is designed to ensure your pond is completely watertight and structurally sound, all without dismantling your existing setup. Here’s how we do it:
- Draining the Pond: We begin by safely emptying the pond to provide a clean workspace and prevent any water damage during the conversion.
- Cleaning and Preparing the Surface: The interior of the pond is thoroughly cleaned to remove algae, debris, and any remnants of the old liner. This ensures a strong bond for the fibreglass.
- Cutting Out the Old Liner: The old liner is carefully removed, allowing us to work directly with the existing structure of the pond.
- Concrete Rendering: To create a solid base for the fibreglass, we apply a high-quality concrete render to the interior. This step ensures the pond has a strong and smooth shell. For further details, check out our guide on how fibreglass is installed.
- Application of GRP Fibreglass Lining: Once the concrete render has cured, our team returns to apply a professional-grade GRP (Glass Reinforced Plastic) fibreglass lining. The fibreglass is finished with a sleek black gel coat for a flawless appearance.
- Quality Assurance: After the fibreglass installation, we conduct a thorough inspection to ensure every inch of the pond is watertight and meets our high standards. This guarantees you a finished product that is built to last.
The Benefits of Our Approach
Converting a liner pond to fibreglass offers unparalleled benefits, combining convenience, aesthetics, and long-term durability:
- No Structural Dismantling: Unlike traditional relining methods that often involve dismantling parts of the pond or lifting heavy slabs, our process works seamlessly with your existing setup. This approach saves time, minimises disruption, and reduces costs while maintaining the integrity of your pond and surrounding features.
- Custom Fit: Each fibreglass lining is applied on-site, tailored precisely to the unique dimensions and contours of your pond. This ensures a flawless fit that adapts to even the most intricate designs, providing a seamless and professional finish.
- Enhanced Aesthetics: Fibreglass not only eliminates the unsightly folds and creases associated with traditional liners but also offers a sleek, polished appearance with a premium black gel-coat finish. The result is a pond that looks natural yet sophisticated, enhancing the overall appeal of your outdoor space.
- Waterproof Guarantee: Our fibreglass installations are meticulously crafted to be completely watertight, ensuring that leaks and water loss are no longer a concern. This means you can enjoy a reliable, hassle-free pond experience for years to come. For more information on longevity, visit our page on extending the lifespan of fibreglass ponds.
- Eco-Friendly Solution: By transitioning from a liner to a fibreglass pond, you significantly reduce the environmental impact of frequent liner replacements. Fibreglass is a long-lasting, sustainable option that helps minimise waste while delivering superior performance.
Additional Services to Enhance Your Pond
While converting your liner pond to fibreglass, you might also consider upgrading other aspects of your pond to further enhance its functionality and beauty:
- Pond Filtration and Pumps: Maintain optimal water quality and a healthy aquatic environment with our state-of-the-art filtration systems. These upgrades ensure your new fibreglass pond remains clear and easy to maintain.
- Water Features: Introduce an element of sophistication to your pond with custom water features. Our team can install elegant waterfalls, cascading streams, or decorative fountains that perfectly complement your fibreglass pond and elevate its overall design.
- Wildlife-Friendly Designs: For nature enthusiasts, we can design ponds that encourage biodiversity. By incorporating features like shallow edges and aquatic plants, your pond can become a tranquil haven for wildlife, adding a dynamic and natural feel to your garden.
Why Choose That Pond Guy?
At That Pond Guy, we take pride in offering exceptional pond solutions tailored to meet your specific requirements. With extensive experience and a dedication to excellence, we ensure every pond conversion project is completed to the highest standards.
- Expertise: Our team possesses extensive knowledge and skill in pond fibreglassing. Every stage of the process is handled with meticulous attention to detail, ensuring a flawless finish and exceptional durability.
- Customer Focused: Your satisfaction is our priority. We work closely with you throughout the process, addressing your needs and ensuring the final result not only meets but exceeds your expectations.
- High-Quality Materials: We use only premium-grade materials and proven techniques to create ponds that are not just functional but also visually stunning and built to last for decades.
Get Started Today
Upgrading your old liner pond to a sleek, durable fibreglass pond has never been easier. With our expert guidance and attention to detail, you can enjoy a watertight, long-lasting pond that enhances the beauty of your outdoor space.
Discover the transformative benefits of pond fibreglassing and let us help you achieve the pond of your dreams. Contact That Pond Guy today for a free quote and take the first step towards a superior pond solution.
Contact Us to learn more about our fibreglass pond conversion services and book your consultation.
Pond fibreglassing advice and guides
If you are looking for more detailed information about pond fibreglassing, we have created a range of in depth guides covering installation, preparation, lifespan, and long term performance.
These guides are based on real projects and practical experience, helping you understand what to expect and how to get the best results from your pond.
You can explore the full guides below:
What is pond fibreglassing?
Converting a liner pond to a fibreglass pond
Fibreglass vs liner
How to prepare your pond for fibreglass installation
The lifespan of a fibreglass pond and how to extend it
How fibreglass is installed
The difference between DIY fibreglassing and hiring a professional
Insulating and fibreglassing koi ponds
Areas we cover
We provide professional pond and swimming pool fibreglassing services across the South East, covering a wide range of residential and commercial projects.
Our core service areas include Kent, London, Essex, Surrey, and Sussex. We also regularly carry out fibreglassing work in Hertfordshire, Suffolk, Cambridgeshire, Norfolk, Buckinghamshire, Bedfordshire, Berkshire, and Oxfordshire, with many of these areas supported by dedicated service pages.
Each project is assessed individually, taking into account access, structure, intended use, and long term performance. This allows us to plan the installation properly and ensure the finished pond performs as expected.
We are able to travel further for larger or more specialised projects, particularly where full pond builds or fibreglass conversions are involved. If you are based outside these areas, feel free to get in touch as we may still be able to help.
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





















