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

Previous Articles

The grass roof at Hilldrop – Celebration 1

The grass roof at Hilldrop is how it all began for John Little. All the techniques and methods in the online guide were used to construct the roof on his house. Furthermore, all of the other green roofs in his garden use the same or similar methods.   Using site...

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Beyond roofs: Brownfield gardening

Brownfield habitat is important to us here at GRT. In fact, we like to get people to design their green roofs to mimic the wonderful habitats that can be found on post-industrial landscapes. Why our waste could become our best wildlife habitat It’s the sight that most...

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Landscapes for brownfield invertebrates workshop

Designing Landscape for Brownfield Invertebrates Workshop Date: Wednesday 13th September 2017 from 10.00am – 5.00pm Location: Hilldrop, Laindon Road, Horndon on the Hill. Essex, SS17 8QB Description: Designing for Brownfield invertebrates is fun, practical and...

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Green Roof Training Workshop

Green roof Workshop - All You Need to Know – How to Build a Green Roof for Biodiversity   All You Need to Know – How to Build a Green Roof for Biodiversity Date: Saturday 12th August 2017 from 10.00am – 5.00pm Location: Hilldrop, Laindon Road, Horndon on the...

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Green roof Shed on Hampstead Heath

Hampstead Heath came calling by email last week. As can be seen below, this is a delightful project. Dave sent us the image and some words of thanks. He had attended a course we ran for the Centre for Wildlife Gardening in South London. In addition to the course, the...

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A small green roof in Ridgefield WA

A few weeks ago, I just happened to be in Ridgefield WA. I was speaking at the ecoroof summit in Portland. So I took the opportunity to nip over to see a green roof shed in the making. Many of you reading this may not be aware that once a member we provide email...

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A double roofed green roofed barn

A double roofed green roofed barn is now gracing a woodland in Essex. Sitting in Norsey Woods near Billericay, the barn is an example of how a small building can be both sustainable and deliver for biodiversity The two roofs have provided two different habitats. In...

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Native alliums – green roof plants US to UK

Alliums are always a great choice for green roofs. Furthermore there are native allium species across North America and Europe (including the UK and France. In fact Allium schoenoprasum, one of the most commonly used has a circumpolar distribution. Called chives in...

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