Green Roofs - Living Architecture Monitor - Summer 2019 - 24

FEATURE

WITH ADVANCED IRRIGATION
SOLUTIONS, THE SKY'S THE LIMIT
FOR GREEN ROOF INSTALLATIONS
BY KELSEY JACQUARD AND ROBB KOWALEWSKI, HUNTER INDUSTRIES

Many green roof projects require irrigation due to the
types of plants used or because of local climate factors.
Furthermore, irrigation provides a means of ensuring
plant survival during periods of drought.

T

wo main approaches to irrigation are subsurface and overhead systems. Hunter Industries has developed a number of
specialized products for irrigating green roofs in an efficient
and effective manner that are described here.
Irrigating a green roof landscape can be challenging and one
option worth considering is to provide irrigation water from
below the surface because this approach provides a range of water
efficiency and usability benefits. Advantages to this approach
include the elimination of water loss due to wind and evaporation,
significantly reduced run times, and highly effective water
distribution. Subsurface irrigation is also particularly effective
in small spaces, odd-shaped installations, and zones near seating
areas. It is the perfect solution for high-efficiency irrigation when
facing strong winds, and its subsurface nature also makes it highly
resistant to tampering and vandalism.
If the variables of a given project conclude that a subsurface
approach to irrigation is the most appropriate solution, Eco-Mat
inline emitter tubing with specialized fleece wrap is the ideal
choice. While other drip products may fail to ensure healthy
rooftop plantings due to the fast percolation rates of the planting
media, Eco-Mat retains water in its synthetic fleece mat and
makes it readily available to the surrounding plants. The mat is
connected with dripline laterals and transports the water quickly
and evenly throughout the desired area. Eco-Mat is installed just
beneath the optimal root depth of the selected plant material, and
water moves through the fleece via capillary action to feed plants
from below.
For most subsurface applications, Eco-Mat is the best choice
for irrigation efficiency and healthy plants. However, for narrower

LIVING ARCHITECTURE MONITOR / SUMMER 2019 / 24

areas with deeper growing
media, Eco-Wrap® fleecewrapped dripline - which
has similar flow and efficiency
characteristics to Eco-Mat
- is a great choice. The drip
tubes of both products are
manufactured with 80 per cent
reprocessed resins, while 100
per cent of the fleece is made
from recycled water bottles.
This means sustainability starts
with production and continues
through advanced water savings
throughout the life cycle of the
products.
With the right tools,
overhead irrigation can also
be a highly efficient solution
for creating beautiful, healthy
green roofs. Choose shrub
adapters on risers or shorter
pop-ups from Hunter
Industries depending on
available growing media depth
and be sure to include pressure
regulation whenever possible.
With pressure-regulated shrubs
or pop-ups, each nozzle will

experience the same controlled
pressure, keeping the radius
and flow consistent at each
sprinkler. For reference, see
the example pressure-regulated
shrub detail below. Choose
the Pro-Spray shrub adapter
PROS-00 on a riser, or the
PROS-00-PRS40 for pressure
regulation. For Pro-Spray
pop-ups, the PROS-02,
PROS-03, and PROS-04 are
ideal 2", 3", and 4" pop-up
options depending on depth
availability and clearance needs.
The PROS-04-PRS40-CV
provides the optimal incoming
pressure of 40 PSI for MP
Rotator nozzles - the most
water-efficient choices on the
market - on 4" pop-ups.
When irrigating green roofs,
MP Rotator nozzles provide
uniform landscape coverage
with a slow and steady application of water. Because green
roof growing media tends to
be very loose with a substantial
volume of aggregates, a slow
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Green Roofs - Living Architecture Monitor - Summer 2019

Table of Contents for the Digital Edition of Green Roofs - Living Architecture Monitor - Summer 2019

Table of Contents
Green Roofs - Living Architecture Monitor - Summer 2019 - IP
Green Roofs - Living Architecture Monitor - Summer 2019 - Cover
Green Roofs - Living Architecture Monitor - Summer 2019 - Cover 2
Green Roofs - Living Architecture Monitor - Summer 2019 - Table of Contents
Green Roofs - Living Architecture Monitor - Summer 2019 - A1
Green Roofs - Living Architecture Monitor - Summer 2019 - 1
Green Roofs - Living Architecture Monitor - Summer 2019 - 2
Green Roofs - Living Architecture Monitor - Summer 2019 - 3
Green Roofs - Living Architecture Monitor - Summer 2019 - 4
Green Roofs - Living Architecture Monitor - Summer 2019 - 5
Green Roofs - Living Architecture Monitor - Summer 2019 - 6
Green Roofs - Living Architecture Monitor - Summer 2019 - 7
Green Roofs - Living Architecture Monitor - Summer 2019 - 8
Green Roofs - Living Architecture Monitor - Summer 2019 - 9
Green Roofs - Living Architecture Monitor - Summer 2019 - 10
Green Roofs - Living Architecture Monitor - Summer 2019 - 11
Green Roofs - Living Architecture Monitor - Summer 2019 - 12
Green Roofs - Living Architecture Monitor - Summer 2019 - 13
Green Roofs - Living Architecture Monitor - Summer 2019 - 14
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Green Roofs - Living Architecture Monitor - Summer 2019 - 18
Green Roofs - Living Architecture Monitor - Summer 2019 - 19
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Green Roofs - Living Architecture Monitor - Summer 2019 - 21
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Green Roofs - Living Architecture Monitor - Summer 2019 - 24
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Green Roofs - Living Architecture Monitor - Summer 2019 - 27
Green Roofs - Living Architecture Monitor - Summer 2019 - 28
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Green Roofs - Living Architecture Monitor - Summer 2019 - 31
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Green Roofs - Living Architecture Monitor - Summer 2019 - 35
Green Roofs - Living Architecture Monitor - Summer 2019 - 36
Green Roofs - Living Architecture Monitor - Summer 2019 - M1
Green Roofs - Living Architecture Monitor - Summer 2019 - A2
Green Roofs - Living Architecture Monitor - Summer 2019 - A3
Green Roofs - Living Architecture Monitor - Summer 2019 - A4
Green Roofs - Living Architecture Monitor - Summer 2019 - A5
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