luscious green roof on a garden shed

DIY Green Roof Guide

The online resource for building small scale green roofs on garden sheds, garages, house extensions and other small construction or retrofitting projects

a green roof on a new house extension

New Builds

A step by step guide to creating a SAFE and LEAK FREE green roof on a new small scale construction project. Learn from the vastly experienced authors how to accomplish it yourself or provide guidance to your contractors

a small green roof on an electrical substation


Even the smallest of roof spaces can provide a small haven of beauty and a wildlife oasis. The retrofitting section advice can be used on garden sheds, cycle & bin shelters, the fundamentals remain the same!

edge details of a garden shed green roof


From suggested screw sizes through edge details to drainage suggestions, John & Dusty take you through the process using text, photos, illustrations and videos

edge details of a garden shed green roof

Planting Ideas

Plant suggestions focussed on native species that can provide the maximum biodiversity. Separate lists for the UK, Eastern USA & Canada, Mid-West USA

Must Allow Excess Rainfall To Escape

Lack of water is one of the biggest stresses on a green roof. However too much water on a roof can cause a number of serious issues:

  • Potentially overloading
  • Vegetation that does not like anaerobic conditions can be killed off

How to Drain the Roof

One of the main concerns that small scale builders have outlined to us is how to drain the roof. The guide gives rational to the whys and hows of allowing free drainage. Before commercial drainage layers were developed, it was common practice to use a thin layer of gravel to act as a drainage layer. However gravel is relatively heavy.

In the guide we explore innovative and creative ways of dealing with drainage as well adding to the visual landscape design and biodiversity of the roof.

Get Started Now

Get immediate access to the all the information you will need to design and build your own small scale green roof.​