Side Ventilation for Polytunnels
We have two options available. Side Ventilation is a timber side rail 1mtr high, fixed rail underneath which is fixed a net windbreak, allowing ventilation and air flow. In addition, we also have Timber Side Ventilation & Screen, which allows the net to be covered through the use of a screen, which can be lowered/raised, helping control temperature and air flow. All options available, for one or both sides.
Effective ventilation is essential for regulating temperature, reducing humidity, and improving airflow inside your polytunnel. We offer two side‑ventilation systems, available for one or both sides of the structure.
🔹 Timber Side Ventilation (Fixed Net System)
A simple, reliable ventilation solution featuring:
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A 1m‑high timber side rail
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Fixed windbreak netting fitted beneath the side rail to the base rail.
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Continuous airflow to help reduce heat build‑up
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Ideal for growers wanting low‑maintenance, always‑open ventilation
This option provides constant passive airflow, making it well‑suited to cooler climates or exposed locations where overheating is less of a concern.
Timber Side Ventilation & Screen (Adjustable System)
A more advanced system offering greater control over your growing environment:
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Includes the same 1m timber rail and windbreak netting
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Adds a raise‑and‑lower screen that can be operated as needed
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Allows you to increase or reduce airflow depending on the weather
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Helps regulate temperature, humidity, and crop protection
This option is ideal for growers who want flexibility—open the screen for maximum airflow on warm days, or lower it to retain heat and protect crops during cooler or windy conditions.
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£56.00
We have two options available. Side Ventilation is a timber side rail 1mtr high, fixed rail underneath which is fixed a net windbreak, allowing ventilation and air flow. In addition, we also have Timber Side Ventilation & Screen, which allows the net to be covered through the use of a screen, which can be lowered/raised, helping control temperature and air flow. All options available, for one or both sides.
£86.00
We have two options available. Side Ventilation is a timber side rail 1mtr high, fixed rail underneath which is fixed a net windbreak, allowing ventilation and air flow. In addition, we also have Timber Side Ventilation & Screen, which allows the net to be covered through the use of a screen, which can be lowered/raised, helping control temperature and air flow. All options available, for one or both sides.
£86.00
We have two options available. Side Ventilation is a timber side rail 1mtr high, fixed rail underneath which is fixed a net windbreak, allowing ventilation and air flow. In addition, we also have Timber Side Ventilation & Screen, which allows the net to be covered through the use of a screen, which can be lowered/raised, helping control temperature and air flow. All options available, for one or both sides.
£86.00
We have two options available. Side Ventilation is a timber side rail 1mtr high, fixed rail underneath which is fixed a net windbreak, allowing ventilation and air flow. In addition, we also have Timber Side Ventilation & Screen, which allows the net to be covered through the use of a screen, which can be lowered/raised, helping control temperature and air flow. All options available, for one or both sides.
£86.00
We have two options available. Side Ventilation is a timber side rail 1mtr high, fixed rail underneath which is fixed a net windbreak, allowing ventilation and air flow. In addition, we also have Timber Side Ventilation & Screen, which allows the net to be covered through the use of a screen, which can be lowered/raised, helping control temperature and air flow. All options available, for one or both sides.
Polytunnel Roll-up Screen / Curtain
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£102.00
🎯 Roll‑Up Screen for Polytunnel Side Ventilation
Our Roll‑Up Screen is designed to give you easy, manual control over the side ventilation on your polytunnel. It allows you to open or close the netted side area as needed, helping regulate airflow, temperature, and crop protection throughout the growing season.
🔧 Installation Requirements
The Roll‑Up Screen is fitted to the inside of the windbreak netting, mounted on the timber side rail approximately 1m-1.5m above ground level. To install this product, your polytunnel must already have:
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A timber side rail
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Windbreak netting fitted along the side
If you require these components, please see our Polytunnel Side Ventilation options.
Not included in the kit.19mm x 38mm (¾in x 1½in) timber battens.
Typical Use: Used as a fixing batten when securing polythene on doors/frames and base/side rails.
What's in this kit? See below.
£128.00
We have two options available. Side Ventilation is a timber side rail 1mtr high, fixed rail underneath which is fixed a net windbreak, allowing ventilation and air flow. In addition, we also have Timber Side Ventilation & Screen, which allows the net to be covered through the use of a screen, which can be lowered/raised, helping control temperature and air flow. All options available, for one or both sides.
£128.00
We have two options available. Side Ventilation is a timber side rail 1mtr high, fixed rail underneath which is fixed a net windbreak, allowing ventilation and air flow. In addition, we also have Timber Side Ventilation & Screen, which allows the net to be covered through the use of a screen, which can be lowered/raised, helping control temperature and air flow. All options available, for one or both sides.
£189.00
We have two options available. Side Ventilation is a timber side rail 1mtr high, fixed rail underneath which is fixed a net windbreak, allowing ventilation and air flow. In addition, we also have Timber Side Ventilation & Screen, which allows the net to be covered through the use of a screen, which can be lowered/raised, helping control temperature and air flow. All options available, for one or both sides.
£189.00
We have two options available. Side Ventilation is a timber side rail 1mtr high, fixed rail underneath which is fixed a net windbreak, allowing ventilation and air flow. In addition, we also have Timber Side Ventilation & Screen, which allows the net to be covered through the use of a screen, which can be lowered/raised, helping control temperature and air flow. All options available, for one or both sides.
£189.00
We have two options available. Side Ventilation is a timber side rail 1mtr high, fixed rail underneath which is fixed a net windbreak, allowing ventilation and air flow. In addition, we also have Timber Side Ventilation & Screen, which allows the net to be covered through the use of a screen, which can be lowered/raised, helping control temperature and air flow. All options available, for one or both sides.
£189.00
We have two options available. Side Ventilation is a timber side rail 1mtr high, fixed rail underneath which is fixed a net windbreak, allowing ventilation and air flow. In addition, we also have Timber Side Ventilation & Screen, which allows the net to be covered through the use of a screen, which can be lowered/raised, helping control temperature and air flow. All options available, for one or both sides.
£189.00
We have two options available. Side Ventilation is a timber side rail 1mtr high, fixed rail underneath which is fixed a net windbreak, allowing ventilation and air flow. In addition, we also have Timber Side Ventilation & Screen, which allows the net to be covered through the use of a screen, which can be lowered/raised, helping control temperature and air flow. All options available, for one or both sides.
£189.00
We have two options available. Side Ventilation is a timber side rail 1mtr high, fixed rail underneath which is fixed a net windbreak, allowing ventilation and air flow. In addition, we also have Timber Side Ventilation & Screen, which allows the net to be covered through the use of a screen, which can be lowered/raised, helping control temperature and air flow. All options available, for one or both sides.