Cooling a commercial greenhouse is an energy and light-quality problem before it is a shade problem. The three-layer netting stack — external shade, reflective screen, insect exclusion — specced by crop and climate.
Greenhouse climate control with netting works as three layers, not one product: external shade cloth to cut peak radiation load, internal reflective screening to manage light quality and night heat retention, and insect mesh on vents to keep vectors out without choking airflow. Spec them as a system and the greenhouse cools without the light starvation that costs yield.
| Layer | Product | Working spec | Role |
|---|---|---|---|
| External shade | Shade net | 40–90% shade rate, 40–350 gsm, widths to 12 m | Cuts peak solar load before it enters the structure; shade rate matched to crop and local radiation |
| Internal screen | Aluminum shade net | 70–95% shade, 80–120 gsm, diffuse reflection | Reflective daytime cooling plus night heat retention — the energy layer for heated or high-value houses |
| Vent exclusion | Insect net | 30–110 gsm, 2–7 mm mesh, widths 1–12 m | Keeps aphids, whitefly and thrips out at vents while holding airflow; cuts spray cycles |
Vegetable houses (tomato, pepper, cucumber) in high-radiation climates typically run 40–50% external shade during peak summer and vent exclusion year-round; ornamentals and nurseries shade heavier, 65–80%. In desert and Gulf climates the reflective internal screen earns its cost in cooling load and night retention — the regional logic is in our Gulf greenhouse guide. In mild climates, insect mesh plus seasonal light shade is usually the whole answer. The GSM side of the decision — what fabric weight actually changes — is covered in the shade net GSM guide.
Greenhouse length × width × gutter height, crop, local summer peak temperature and radiation, and whether vents need exclusion. We reply within 24 hours with a three-layer spec and a mixed-container plan — all three layers ship together. MOQ 2 tons total, production 25–35 days, samples free with courier on the buyer. Contact us or WhatsApp with your structure dimensions.