Saw-Tooth Naturally Ventilated Poly House

A Saw Tooth Naturally Ventilated Polyhouse (NVPH) is a specialized greenhouse structure designed with a roof configuration resembling the shape of saw teeth. This unique design incorporates alternating ridges and slopes, which optimize natural ventilation by enabling warm air to rise and escape through the elevated ridges while allowing cooler air to flow in through the lower sections. The sawtooth roof design is particularly effective in maintaining a stable microclimate within the polyhouse, ensuring proper air circulation, temperature control, and humidity regulation. This structure is widely used in agriculture for enhancing crop productivity while reducing energy consumption by eliminating the need for mechanical ventilation systems.

Top & Side Covering

Poly Film 200 Micron, Anti-Drip, Anti-Fog, Anti-Dust, IR Cool, Diffused, Clear or Cool, UV & Agro Chemical Protected

Apron (Skirting) Laminated Fabric, 140 -160 GSM, White or Transparent, UV & Agro Chemical Protected

Insect Net 30/40/50 Mesh, 90-120 GSM, White or Transparent or Green, UV & Agro Chemical Protected

Shade Net Options (Sliding Layer)

Mono x Mono Shade Net, 50% Shading, 100-125 GSM, White or Green, UV & Agro Chemical Protected

Mono x Tape Shade Net, 50% Shading, 100 GSM, White or Green, UV & Agro Chemical Protected

Tape x Tape Shade Net, 50% Shading, 100 GSM, White or Green, UV & Agro Chemical Protected

Aluminate Thermal Shade Net, 50% Shading, UV & Agro Chemical Protected

Technical Specifications

Structure Frame	250 to 300 GSM GI Coted Pipe (Round) Pipe/s (Hot Dip Post Galvanized Iron)
Thickness of GI Pipe/s (mm)	2.00, 2.90
Span (m) x Bay (m)	6.40 x 4.00 or customized
Centre (Top) Height (m)	6.00 to 7.00 or customized
Side (Gutter) Height (m)	3.00 to 5.00 or customized
Top Vent Opening (m)	2.00 or customized
Side Vent Opening (m)	2.00 to 4.00 or customized
Trellising System Capacity (kg)	25.00 kg/m²
Rainwater Harvesting Feature	Yes

Innovation and customization are possible per client requirements.

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Sections

Inner Section

Outer Section

FAQ

Where is a Saw Tooth NVPH commonly used?

It is commonly used in tropical and subtropical regions where natural ventilation is crucial for maintaining optimal growing conditions.

Can a Saw Tooth NVPH withstand harsh weather conditions?

Yes, it is designed to withstand wind, rain, and moderate snowfall, but the structural strength should be tailored to local weather conditions.

What crops are suitable for cultivation in a Saw Tooth NVPH?

It is ideal for vegetables, flowers, and high-value crops such as tomatoes, capsicum, cucumbers, and roses.

What is the primary difference between NVPH and STNVPH?

NVPH has a simple sloped or curved roof, while STNVPH features a saw-tooth roof design with alternating ridges and slopes for better ventilation. STNVPH offers superior natural ventilation due to its unique roof design, which promotes efficient airflow.