Vervaeke Poly Bottom
Custom Poly System Roll-Up Ventilation Curtain
Achieve precise climate control and fresh air intake across low-profile livestock housing. The Poly System is a polyvalent, roll-up side wall ventilation curtain engineered specifically for pig housing, poultry barns, calf sheds, and specialized agricultural buildings. Covering massive spans up to 100 metres wide and 2.5 metres high, this system rolls from the bottom upwards, allowing fresh air to enter precisely at livestock level while maintaining effective weather protection.
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Description
Low-Profile Architecture & Flexible Automation
The Poly System is designed to integrate seamlessly into existing barn structures with minimal clearance demands, requiring just 10 cm at the top header and 20 cm at the bottom base (25 cm when equipped with an external bird screen frame).
Whether managed via a simple manual hand crank or driven by an electric motor connected to an automated climate computer, the system reacts swiftly to internal temperature and humidity shifts.
Key Technical Benefits & Features
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Massive Continuous Spans: Capable of running up to 100 metres long on a single drive, eliminating broken wall sections and cold air gaps.
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Bottom-Up Opening Flow: Directs air intake through the lower aperture to quickly exhaust heavy gases, moisture, and ammonia from lower stock levels.
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Stainless Steel Fasteners & Fittings: Built entirely with stainless steel hardware to resist high-ammonia poultry and pig house atmospheres without rusting.
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Versatile Control Roster: Choose from economical manual hand-crank operation, direct electric motor control, or full climate computer automation.
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Fire-Retardant M2 Fabrics (in option): All fabric choices meet strict European flammability class M2 standards for agricultural building compliance.
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CE Certified Engineering: Manufactured to meet European health, safety, and structural directives for agricultural machinery.
Custom Fabric Welding & Color Options
Every Poly System curtain is welded to order in our factory to meet your precise building ventilation calculations:
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100% Impermeable Tarpaulin: Blocks all driving rain, wind, and draft—ideal for brooding chicks or young piglets sensitive to temperature drops.
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Micro-Perforated Windbreak Mesh: Diffuses strong external winds into gentle, indirect air circulation while keeping heavy weather out.
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Hybrid Custom Sections: Combine solid tarpaulin panels with breathable upper mesh sections in a single continuous curtain sheet.
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Agricultural Color Palette: Available in multiple colors per windbreak factor to match existing site cladding.
Safety Protocols & External Bird Screen Options
When connecting ventilation systems to automated weather sensors or climate computers, physical safety and biosecurity are critical:
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Automation Height Regulation: To prevent accidental entrapment with rotating reels, a climate computer can only be connected directly if the system base sits higher than 2.70 metres from the ground.
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Optional External Bird Mesh Frame: For lower installations, an extra windbreak and bird screen mesh can be mounted on an aluminum frame directly in front of the curtain wall:
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Biosecurity Shield: Keeps wild birds out of poultry and pig units, reducing disease transmission risks.
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Child & Operator Safety: Acts as a physical guard, preventing children or farm workers from touching the revolving reel during automated adjustments.
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Self-Cleaning Screen: Mounted on the outer building face, allowing natural rainfall to wash away dust, feathers, and windblown debris automatically.
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System Specifications Overview
| Feature / Metric | System Specification Details |
| Maximum System Dimensions | Up to 100m Wide x 2.5m High |
| Drive Mechanics | Heavy-duty Cardan Shaft system for uniform torque |
| Clearance Required | Top: 10 cm | Bottom: 20 cm (25 cm with bird screen frame) |
| Hardware Standard | 100% Stainless Steel fasteners and mounting brackets |
| Fire Safety Rating (in option) | Flammability Class M2 (Fire Retardant) |
| Certification & Safety | CE Label Certified; compliant with automated climate computer safety rules |
Optimize Your Barn Micro-Climate Today
Provide your livestock with continuous fresh air and climate control. Contact the Intershape ventilation team today for expert advice, fabric options, and a tailored system estimate for your farm building.