From a green perspective a grass Roof has many benefits, including insulation, sound proofing, and roof durability. CAT Publications produce a DIY Tipsheet that gives;'A detailed DIY guide, with materials list and pros and cons'. At only (GBP) £0.50 it is a bargain to boot!So, if you've ever wondered how to tackle such a project on an existing building, or are planning a build from scratch, then