This creates a vacuum that draws cooler air into the greenhouse through the sidewall vents located closer to the ground.
Green houses vented roof.
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A roof vent serves as an escape route but it also provides a source of cool air intake.
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As the temperature increases within the greenhouse hot air also rises and escapes through the roof vents.
Most people who use natural buoyancy have a series of roof vents as well as vents on the sides of your greenhouse.
When the temperature inside the greenhouse rises the hot air also rises and goes out the vents in the roof.
As the hot air goes out of the roof vents a vacuum is created which brings in cooler air through the side vents.
Natural ventilation or curtain ventilation uses a series of roof and sidewall vents.
Access to the greenhouse is comfortable through a wide double door and the roof vent allows you to regulate temperatures humidity and airflow.
Roof venting is still considered the best of greenhouse ventilation systems.