Components of a Successful Green Roof

HYDROPACK Standard Mix








Green roofs enhance urban developments by creating additional green spaces and by increasing biodiversity. Unlike roof gardens, which are expensive to install and expensive to maintain, extensive green roofs are easy to install and cost significantly less, while simultainiously require much less maintenance. The success of a green roof project depends on four key factors:

Project study

Vegetal i.D. starts every project by completing a thorough a project study of every installation to choose the best plants, the specific area to be planted, the best approach and timing to installation, and the maintenance requirements after the installation. The green roof system for each project must be designed with careful consideration in order to ensure a successful and attractive green roof.  At Vegetal i.D. we look for a number of important factors:

  • HYDROPACK Custom Mix
  • decking
  • desired vegetation type and aesthetic appearance
  • safe working load
  • roof pitch
  • roof location and exposure
  • rooftop accessibility
  • building standards


There may be other constraints like as reflective walls and windows that run adjacent to the green roof, or runoff that spills onto the green roof from adjacent roofs. All of these factors are taken into consideration by Vegetal i.D.'s engineers and technicians as they apply their expertise to identify the most appropriate design for each project.

Vegetal i.D. employs a well-balanced team of technical experts with unrivaled experience in building and designing green roofs. This enables our team of experts to provide valuable insight on even the most complex projects.

In North America, green roofs are subject to several standards and guidelines:

  • ASTM E 2397 : applicable when determining dead loads and live loads associated with a green roof system.
  • ANSI /SPRI RP-14 : applicable when factoring wind forces into the green roof design.
  • The green roof design guide produced by Toronto City Council (TGRCS).


The green roof system

HYDROPACK cross section

Vegetal i.D. has been growing green roof plants for over 20 years and operates one of North America's largest nurseries specialized in the production of green roof systems. We choose plants for their heartiness, focusing on plants that are drought tolerant, healthy and selected to stay beautiful in the long-run.  A green roof system consists of four layers: a drainage layer, a filter layer, a growing medium layer (substrate), and a vegetation layer. Successfully managing this composite structure is the key to creating a green roof system that performs well over the long-term.

Hydropack® module has been proven and tested in many different climates and is the most installed modular green roof in the world.


Installation Process

     HYDROPACK beng installed

Installing a green roof will need special working arrangements, due to the weight of the green roof system, waterproofing requirements, and provisions for maintenance access. With thousands of successful projects to build experience on, Vegetal i.D.'s teams have the expertise to give pragmatic and helpful guidance on all aspects of the installation to help guide customers though any project in any situation.



Weeding the green roof

Extensive green roofs are very low maintenance, but some excercises are essential to maintain a beautiful green roof. The type of maintenance activity depends on the type of vegetation and the customer's requirements for the look of the green roof.

We strongly recommend creating a formal plan for the maintenance tasks using a maintenance agreement with a specialist contractor when the project is installed.

Vegetal i.D. offers a host of maintenance agreements suitable for all types of projects, covering both planted and vegetation-free zones. The roofing assembly system will also require periodic maintenance by a specialist contractor.


Ready to learn more?  Fill out our quote form and a Vegetal i.D. representative will contact you and help you to design your green roof project.
More in this category: Green Roof Concepts »
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As an expert in green roofs, Vegetal i.D. is a member of:

adivet association des toitures végétales   GRHC-white-no-background-copy-smaller Milwaukee Water Council AIA-provider-logo

US Green Building CouncilPole Dream, Pole de compétitivité eaux et milieux - région CentreGreenroofsGTTV Conseil GTTV 

Looking for a product to achieve a successful green roof or achieve your on-site stormwater management goals? As experts in green roof and stormwater management products, Vegetal i.D. is a manufacturer and provider of green roof and stormwater management solutions.  Vegetal i.D. stays with every project from concept to installation so with Vegetal i.D. your never on your own.

Vegetal i.D. offers modular extensive green roof products such as Hydropack®, stormwater management solutions and green roof solutions for any pitch using Acropack.