Hi all,

I've just moved into a relatively new build home (2 years old) and have decided to attempt to create a vegetable patch. The actual area of garden is raised from the house level and is surrounded by a brick wall.

Started digging and 10 cm's down there is a layer of foam/plastic material which seems to cover the whole garden surface, this is not the same as the plastic lining protecting the wall. Now initial thoughts were that it covered the building debris left behind, however a curious look underneath shows that it just covers the natural clay.

So does anyone know what this layer of material is, what it is for and basically can i rip it out in order to sink a border fence in and refill with top soil?

Thank you for any help!