Swell Pond Liner 4X9M With Free Underlay40 Year Guarantee For GardenFish And Koi Ponds from B&Q
Swell
The Swell HDPE Pond Liner is a best-selling choice for wildlife ponds, Koi ponds, and large garden water features. Made from durable 0.35mm HDPE (High-Density Polyethylene), it's UV-resistant, flexible, and built to last – now with a 40-year guarantee and free heavy-duty protective underlay included for added puncture resistance.Whether you're building a small garden pond or a large ornamental feature, this easy-to-install liner provides a long-lasting, watertight seal. The included underlay protects against sharp stones and roots, helping to prevent leaks and extend liner life.Available in over 20 sizes – from 2.5x2.5m to 30x40m – simply choose the right size using a Pond Liner Calculator and we’ll match the correct underlay for you.
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