GGS has been a world-class designer, manufacturer, and installer of commercial greenhouse structures since 1979 and our greenhouses are built to last. Here are the ways GGS can design, manufacture, and install the right commercial greenhouse for you.

1. Built to Last Since 1979.

2. History of GGS
• GGS is part of a group of companies owned by the
Harrison family which include GGS Construction, GGS
Structures Inc, Niagrow Systems Limited, JGS Limited,
Letrek Holdings, Trevor Construction Corp, Necaxa SA &
MMM SA
• Three of our companies specifically design greenhouse
systems:

3. What We Do
• GGS creates the ideal environment for your crops
to flourish.
• GGS can provide turnkey solutions for a seamless
and worry-free greenhouse project
• From structure, to heating, to environmental control,
our professional team at GGS is there through every
step of your project.

4. Greenhouse Vegetable
Production
• Compared to field-grown
and low-technology
protected crops,
greenhouse vegetables lead
the market in quality.
• Greenhouse vegetable
production trumps field
production on not only
quality, but variety, food
safety, resource
conservation, environmental
impact, and sustainability.
Source: Update on the North American Greenhouse
Vegetable Industry, Farm Credit Canada, 2012

5. Greenhouse Vegetable
Production
• There are 125 countries in the world that produce
greenhouse vegetables commercially
• World Greenhouse Vegetable Production surpassed
1 million acres in 2012
• 2013 Total Estimated World Vegetable Production in
Climate Controlled Greenhouses: 1,101,353 acres
Source: International Greenhouse Vegetable Production Statistics, Cuesta Roble
Consulting, 2013

6. Top Greenhouse
Vegetables
(North America)
• #1 Tomatoes
• #2 Cucumbers
• #3 Bell Peppers

7. Greenhouse Components
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Structure/Shading
Benches
Heating System
CO2 Dosing
Irrigation System
Climate Control System

8. Structure
• The way the structure is designed plays a very
important role in the environment of your crops
• Quality growing environment with high light levels is
essential
• Ventilation is critical – there are many options for
natural ventilation such as gutter vents
• Condensation control – structure must be designed
to minimize dripping
• Ideal to have a strong, steel frame that is hot
dipped galvanized to protect against corrosion
from the elements

9. Freestanding Greenhouse
• Ideally suited for professional growers who
require unique environments for different crops
• Provides economical growing space
• Dramatically sloped arch design optimizes the
useable space for growing bench crops as
well as hanging baskets

10. Gutter Connected Poly
Greenhouse
• A versatile greenhouse designed for vegetable crops or
floriculture
• A single piece arch rolled into a gothic peak for superior
condensation control
• Gutter vents and other natural ventilation options for the
most effective and efficient airflow possible
• The most economical greenhouse for large growers

11. Widespan Greenhouse
• Ideal for a header house, a retail area, or a
growing greenhouse
• Eliminates the center row of posts for more
room
• Twin peaks and a floating gutter for
increasing the growing area without
sacrificing ventilation

12. Curved Glass Greenhouse
• Quality growing environment with high light
levels
• Continuous double ridge vents for up to 50% roof
ventilation
• Designed to virtually eliminate condensation drip
• Can also be glazed with 8mm PCSS or 8mm
acrylic

13. Low Profile Venlo
Greenhouse
• Quality growing environment with high light
levels
• Aluminum roof glazing bars hold the tempered
glass panes in place
• Continuous alternating vent windows
• Strong, heavy hot dipped galvanized steel frame
for superior protection against corrosion

14. Cold Frame
• Constructed of high quality steel arches to provide
long lasting protection from rust and corrosion
• Easy to build on-site and add-on sections are
available to extend their length
• A cold frame is an excellent structure for the first
time grower as well as large scale nursery
production

15. High Tunnel
• Extends the growing season - crops will benefit from
both an earlier spring harvest, and a longer
fall/winter season
• Provides frost protection, better environmental
control, and significant yield gains
• Reduces moisture, which helps prevent botrytis,
mildew, and other moisture related diseases

16. Shade System
• Curtains provide simplicity, ease of installation, and
are easily maintained
• Add Blackout Screens for day light control and
additional energy savings
• Rolling Screens provide energy management and
blackout for sidewalls

17. Benches
• Benches can either be stationary or rolling
• Can be fabricated in expanded metal covering,
ebb and flood trays, or irrigation troughs
• The bench assembly is designed for easy installation
• Mitred corners prevent workers or customers from
ripping clothing

18. Heating System
• No matter the climate, greenhouses require heating
to ensure optimum plant growth on a year-round
basis
• There are various ways to deliver heat to your
plants:
o Forcas Pipe Heating
o In-Floor Heating
o Under Bench Heating
o Overhead Heating

19. Forcas Pipe
• Thin wall steel tube ideally suited for heating systems
in greenhouses
• Brings heat directly to the crop where it is most
effective
• Lightweight and practical application
• Narrow diameter 28/35mm pipe greatly reduces
volume of water needed

20. In-Floor Heating
• Directly heats the plants and soil
• Flood floors use the concrete floor as a radiant
surface to heat the plants and irrigation water
• In-ground heating uses tubing that is buried directly
in the growing beds

21. Under Bench Heating
• Maintains uniform
temperatures and reduces
humidity around the plants
• An under bench heating
system can reduce fuel costs
10 percent or more
• Distributing the heat under
the benches warms the
growing medium first before it
rises to heat the air. For most
crops, the medium
temperature is more critical
to good growth than the air
temperature

22. Overhead Heating
• Can provide the additional heat required for winter
months
• Compatible with hanging basket areas, snowmelt
systems, and mono- or post-rail systems.

23. CO2 Dosing
• Carbon dioxide is essential for the growth of plants
• Central dosage of CO2-rich flue gasses from gas
burning boilers has led to a considerable
production increase in greenhouse horticulture
• Flue gas condensers increase the efficiency of your
boiler dramatically

24. Irrigation System
• Keeping your plants hydrated with just the right
amount of nutrients is essential
• Many different types of watering systems available:
o Drip Irrigation
o Sub Irrigation
o Misting Systems
o Sprinkler Systems
o Hand Watering Systems

25. Climate Control System
• Computerized
automation ensures
that you can control
your greenhouse
climate
• Computer systems can
automatically control
venting, air circulation,
heating, irrigation, and
more

26. Lighting
• Depending on the geographical
location and time of year,
supplemental lighting is crucial to
ensuring the maximum growth of
your crops
• Supplemental lighting ensures
that you can be flexible on what
crops are grown, regardless of
what day-length or light intensity
is required

27. Why Choose GGS?
• Quality materials used for every component of the
greenhouse
• CSA-A660 steel quality certification
• Easy, hassle free construction
• Built to last and dependable greenhouse systems
• Projects delivered on time and within budget
• Focus on building an ideal system for your crops
that will maximize return on investment
• Superior customer service through every stage of
your project & satisfaction guaranteed
• To get started on your greenhouse project,
navigate to www.ggs-greenhouse.com