Hydropack Irrigation

Extensive green roof systems establish plant cover that will (after reaching a minimum of 80% plant coverage) maintain itself almost autonomously with little or no need for artificial watering. The main plants used in our systems are succulent plants from the crassulaceae family (especially sedum), which require little water. However, in certain conditions (determined by factors such as the project location and the presence of semi-intensive vegetation and/or pitched roofs) it may be necessary to supplement the natural rainfall with a rooftop watering system.


    Irrigation Piping System

When Should a Watering System be Installed?

The rainfall profile – and in particular the local rainfall frequency – is a key factor in the decision of whether or not to install an automatic watering system. HYDROPACK is designed with dedicated water reservoirs to maximize rainwater retention and minimize both irrigation and weight. In many regions, HYDROPACK trays that use the STANDARD PLANT MIX plant cover do not require additional watering except in the event of an extended drought or sustained high temperatures.

Our HYDROPACK trays with the STANDARD PLANT MIX do very well without irrigation in the following regions: Midwest, New England, Mid-Atlantic, Appalachian Highlands, and Northern Pacific Coast. Outside of these regions, a case-by-case study is required to determine the need of permanent irrigation.

A temporary irrigation system might be necessary for the summer months some years.

For any sloped application above 15%, a permanent irrigation is required.

What is the Most Important thing to Remember about Irrigation?

When designing a green roof, it is crucial to design a system with water access on the roof with at least 34 psi in order to be able to water the roof in case of an extended period of drought.


What Type of Irrigation System Should I Use?


The experts at Vegetal i.D. can help you to decide if a permanent irrigation system is necessary for your green roof project. They can also help to guide you in designing and implementing the appropriate irrigation system for your particular green roof project.


Spray Irrigation Drip Irrigation


For more information on irrigation systems, please click here.

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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.