We guarantee the liners for 2 years against any manufacturer defects (material, seams, construction) and have done extensive use and freeze/ thaw testing.  (Draining your Rain Bench® for winter is still recommended)  They are, however, not indestructible and therefore can be torn or punctured with sharp objects.  Once inside a Rain Bench® framework, however, they are protected from most dangers as well as sunlight.

We have our own and various installations for others since spring of 2009 and have never needed to replace a liner due to a failed seal.  The only time we have heard of a replacement being needed is has been 1,  from animal damage.