We’ve had an email from Martyn:

Can solid pond liners be recycled? If so, where please?

As far as I can see, rigid pond liners tend to be made from fibreglass and as we discovered last time we had a fibreglass item on here, fibreglass can be recycled but isn’t widely done so.

A better idea would be to reuse the pond liner. They apparently have a 20 year lifespan as ponds but after that they, presumably, begin to leak. (No one mentions what happens after that 20 years – I hope it’s start to leak and not explode violently killing everyone in a 50m radius. Because that would be bad.) If you don’t need it as a pond any more, offer it on Freecycle/Freegle to someone who wants one. Or if it’s started to leak and is beyond repair, you (or someone else) might want to use it as a planter or the like.

Any other ideas?

And what about reuse ideas for flexible PVC pond liners that have been damaged or are leaking?