Hydropack Installation Guide

Installing HYDROPACK







Disclaimer: This section is an easy-to-follow instruction guide to install Hydropack®. Please read it carefully before you schedule and organize the installation and fax the certification back to Vegetal i.D. 585-343-6401.  You can download the certification document here.


The contractor is responsible for the quality of every Hydropack installation. Care should be taken to avoid damaging the waterproofing membrane and the plants, both before and during the installation.


The Vegetal i.D. team can provide you with support for your green roof design, including CAD drawings, plant selection, installation, and maintenance. Don't hesitate to give us a call if you have any questions. Tel: 585-343-6400. 

Is this your first Hydropack installation? Call us to ask a representative to come on site.


Information we Need 

  • Desired date and time of delivery 
  • Contact onsite: name, phone, email
  • Type of truck (dry van, flat bed, etc.)



  • Vegetal i.D. will contact you to set up the shipment. If you need to postpone the shipment, contact our logistics specialist at least 10 days before the shipment. If delayed for more than 2 months, there may be a surcharge for plant maintenance. 
  • Read and follow carefully the architect's specifications and the waterproofing membrane manufacturer's requirements. Find out which protection fabric, root barrier and vegetation free zone are required by membrane manufacturers to obtain the TSW (removal warranty).
  • Before installing the modules, inspect the waterproofing surface to ensure that it is watertight. This will require a flood test (the controlled flooding of the entire roof with no less than 2 inches of standing water).
  • The surface of the waterproofing membrane should be swept and washed.
  • While the protective fabric is being put into place, no other activity should be carried out on the roof. 


HYDROPACK is shipped on easy to move pallets Inspection of roofing membrane


Shipments may be delayed, but no later than 10 days before the merchandise leaves the nursery.

If the trays can not be installed on the same day, please contact Vegetal i.D. for instructions.

The Hydropack trays are stacked on top of each other on a standard pallet.

Per truckload, we can transport about 3,200 sq. ft. per truckload 1,200-1,280 trays (288-308 m2)

One pallet is 2,200 lbs; 156-166 sq. ft., 60-64 trays (14.4- 15.4 m2)

We use flat bed trucks, dry vans, and temperature controlled reefer trucks

– simply let us know which is most convenient for you.



Unloading a HYDROPACK pallet
Lifting HYDROPACK to a rooftop


Tools Needed

  • Pallet jack
  • Forklift/bobcat with forks, or a crane (if shipped on a flat bed)
  • Lifting device for raising the pallets to the roof


  • Unload the pallets and place them in the shade to protect the vegetation from direct sunlight.
  • Be ready to install Hydropack on the day ofdelivery.
  • Each pallet weighs about 2,200 lbs.
  • Lift the Hydropack pallet to the roof without putting it down. If you're using a crane, protect the roof before lowering the pallet, and make sure that the roof is strong enough to take the weight.
  • Lift the pallets as close as possible to the place where they are going to be installed. 
Hydropack is packaged on pallets rather than racks. This allows trucks to leave as soon as they have been unloaded, and simplifies site management.






Pallet-on-RoofTools Needed

  • Gloves for each crew member
  • 3 Knives or 3 pairs of scissors
  • 1 Wheelbarrow (if gravels in the vegetation free zone)
  • 1 Chalk Line
  • 1 Circular saw or reciprocating saw
  • 1 Shovel


  • Roll out the Root Barrier and/or protection fabric overthe waterproofing membrane (consult the waterproofing manufacturer's recommendations)
  • Overlap the sheets by a minimum of 2 inches.
  • Take 2 empty Hydropack trays and place them at one corner of the roof. This will allow you to visualize the sequence you will follow when arranging the rest of the trays. The order should always be from left to right.
  • Remember: for most specifications you will need to create a Vegetation-free Zone along the perimeter of the roof and around any rooftop equipment. Measure the width of the vegetation-free zone and draw a straight chalk line to mark the edges from which you will begin installing the trays. The lines have to form a perfect 90 degree angle.
  • In some cases you may find it necessary to cut Hydropack. If so, empty the tray using the filter fabric to lift the soil. Cut the tray with a circular saw/knife or reciprocating saw. Position the tray with the remaining edges facing outward. Cut the soil and plants with a knife and replace them in the tray (see page 67).
  • When all the trays are installed, fill the space around the perimeter with gravel ballast. Use the wheelbarrow to move the gravel around the roof, and use the shovel to spread it.


Placing the root barrier Visualizing tray positioning
 HYDROPACK installation  Vegetation free zone


Hydropack saves you money because it allows you to create vegetation-free zones without the need for aluminum edges. And because Hydropack's All-in-One system already includes drainage, water reservoirs, and filter cloth, so you save time on installation as well.


Connecting Trays

Close up of hooking systemTools Needed

  • Gloves


  • Hold the Hydropack tray with the female hooks facing you.
  • Position the tray next to the trays already in place.
  • Holding the tray by the top right hand and bottom left hand corners; lift them ½''.
  • Slide the male hooks down into the female hooks.
  • If the hooks don't slide in all the way use your foot to press them into place.


2 crew members hook, 2 bring trays

Hooking HYDROPACK trays

Closeup of interlocking trays


Hydropack is the only tray with an interlocking system designed to allow water and nutrients to circulate.  The strong interlocking system protects the trays from being uplifted by the wind.



Tools Needed

  • 1 Circular saw or reciprocating saw


  • In some cases you may find it necessary to cut Hydropack. If so, empty the tray using the filter fabric to lift the soil. Cut the plastic tray with a circular saw/ knife or reciprocating saw. Position the tray with the remaining edges facing outward. Cut the soil, filter and plants with a knife and place them back into the tray.



Hydropack can be cut easily to fit odd dimensions and angles.

We recommend emptying the tray before cutting the plastic following these steps. 


(click on the image to view it in more detail)

Step 1: Empty the tray
Step 2: Cut the tray Step 3: Place the tray with edges outward
Step 4: Place the minerals back into the reservoirs
Step 5: Cut the vegetation and soil with a knife (keeping the filter) and place back into the cut tray



Cleaning up after install

Tools Needed

  • Broom


  • Remove all equipment, debris and pallets from the roof.
  • Use leftover growing media and plants to fill in bare spots, if any.
  • Sweep the vegetation-free zone if you have installed pavers.
  • Take steps to ensure that there is no work on the roof after installation. The vegetation will die off if there is too much foot traffic. 



The newly installed green roof after cleaning



Cleaning up after install

Tools Needed

  • Irrigation supply:
    • hose, tripod sprinklers
  • Irrigation timer



  • Position hoses and overhead sprinklers so that they provide optimum coverage of the vegetated area.Program the irrigation for 30 minutes.Check the Hydropack reservoirs in different places to make sure they are full of water, if they are not, water for a little longer. To check the water level in the reservoirs, lift the filter cloth in the tray.
  • For the first year, the vegetation will need to adapt to its new environment. We recommend that you water during the summer (July-August), once a week for 30 minutes.After the first year, water only during periods of drought: > 90 °F (32 °C) with less than 0.6'' rainfall (15mm) for 20 consecutive days.




For the first month, the vegetation must be checked regularly, at least on a weekly basis to ensure that the plants are adapting well.  After one month, the plants can be checked quarterly. 

Please review our maintenance guide to and contact us to develop a maintenance plan for your project.  If you notice a probem, call Vegetal i.D. immediately.



Facebook TwitterLinkedinChaine You Tube
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.