I recently discovered the pavers in my back yard had a wet appearance. After tracing the leak I found that one of the 700 black poly irrigation lines had a leak. This is one of three lines I found buried at 6-8 inches below the pavers.
My concern is how the leak developed and if this is likely to happen in the future. Is black poly not intended to be used like this? Should I re-bury it in a conduit of PVC or something to protect it better? It seems like once even a pinhole leak develops it would be very prone to attracting roots, yet this seems to be a very popular way to irrigate.