Anyone tried this? I read of a project in Japan that did. A plastic damp-proof course was installed in a narrow trench and backfilled.

I'm keen to try it for post-forestry bog restoration on sites so severely dried that damming ditches is not enough. Idea is to install the membrane in a ring, following the contours. Further rings could be added.

Problems I foresee are how to install, how to join lengths of membrane, expansion problems, erosion at low points and burrowing animals with sharp teeth.

Could it work? Thoughts or experience welcome.