Ventilation can either be done passively through openings or mechanically with fans.
Roll-up sides are an economical way of getting lots of air movement since no electricity is required.
Roll-up sides become even more effective when used on longer buildings.
Roll-up sidewalls are often used in combination with a small exhaust fan for early and late season ventilation when opening the sides is not practical.
If a structure is very exposed, it is best not to open more than 3’ in height due to the potential of wind damage.
If a structure is extremely sheltered, it is best to go even up to 6’ to create a maximum opening.
Roll-up sidewalls are most effective when used in combination with peak end wall vents to create a “chimney effect” to draw warm air out of the building, especially when it is very calm. These vents are effective for air movement when outside temperature does not allow the opening of the sides.
When a structure has a low profile, you will need to be careful during rainy periods due to moisture getting into the structure area.
High-profile structures (with straighter walls) usually work better with roll-up sidewalls.
When preventing a floor draft is an issue, the roll-up mechanism can be raised and then the structure is lined with a skirt for the bottom 2’-3’.
When using this method of ventilation, it should always be done on both sides. An effective use of this method includes opening the “downwind side totally and the opposite side marginally.
We made some tutorial videos regarding our Roll-up sides options. Please enjoy and let us know any comments you may have. You can also watch them all on our YouTube channel here:
You can also see more at our Roll Up Sidewall Considerations article (also below videos)