Enhanced Cooling and Plant Protection from Shade Cloth
Shade cloth is a great option to help cool greenhouses and protect plants from excessive sun exposure. Greenhouse shade cloths work by reflecting the sun’s rays off of the cloth or by blocking them. Natural greenhouse ventilation can cool the greenhouse to outdoor ambient temperature, and additional cooling can be achieved using evaporative cooling pads or automated ventilation. However, using shade cloth on your greenhouse provides additional cooling without increasing electricity use.
What is Shade Cloth?
Woven vs. Knitted Shade Cloth
Common Types of Shade Cloth
- Polypropylene: Strong material that resists flexing, abrasion, and chemicals, shrinks ~1% when applied to greenhouse
- Black Nylon: Effective at filtering light but does not reflect light, similar in cost to Aluminet, generally hung outside the greenhouse
- Saran: Fireproof, shrinks ~3% when applied to greenhouse
- Knit Polyethylene: Lock-stitched netting that does not fray or run when cut, fire and mildew resistant
- Metalized Shade Fabric: Moderates day and night temperatures
- Aluminet: Reflects heat and provides shade, cost-effective, can be hung inside the greenhouse