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By Nicolas BRULARD (Fermes de Gally) and Nicolas Ancion (ULg)

You are:

  • A roof owner

  • An architect, an engineering office

  • A private or public funder

  • An urban farmer – producer

You are wondering how to set up an rooftop greenhouse (RTG), with whom, why, how to fund/operate/sustain it. So many questions that you can (and should) rightfully ask yourself.

Based on our experience, here are 4 diagrams that bring together the steps involved in the good conduct of your project, according to your role in the project and your skill profile.

How can I go further? Browsing the guidelines will allow you to go deeper into the various points covered in these diagrams.

Building an RTG is a long-term commitment. Unlike land-based agricultural greenhouses, RTGs combine the challenges of the construction, energy, and horticulture industries. If you want to benefit from the synergies between the greenhouse and the building (energy savings, water recovery, consistency of uses, well thought out access and logistics), you will need to coordinate your project with the building stakeholders and coordinate your agendas more than ever for multi-year projects.

We produced a factsheet for each type of stakeholder to help you carry out your RTG project. These sheets are a dynamic table of contents to help you read the GROOF guidelines depending on the progress of your project. These stages of the project are based on experience from the four pilots GROOF greenhouses and on the feedback from the projects supported by the GROOF partners. In the digital version of the guidelines, you can click on each step to access the corresponding sheet in the guidelines.


Project steps and overall plan of GROOF resources

Urban rooftop greenhouse (RTG) projects are often complex because they involve many stakeholders from the agriculture, construction, energy sectors, and from the city. They all have their own vocabulary, project timing, objectives, and constraints. These projects generally take 2 to 5 years depending on the context; you will have to stay on course and be motivated over time!
As part of the Interreg NWE (North-West Europe) Greenhouses for CO2 Reduction on Roofs (GROOF) project, here is a project management framework for each stakeholder, with 2 objectives:
• Provide a framework for managing your project, from the initial idea to operation,
• Facilitate your access to the various Groof resource sheets on production, business plan, climate management, and links with the building.

Preparation strategy photo pilots.jpg
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