Engineered to withstand EN 13561 Class 6 wind pressures (up to 120 km/h), control solar heat gain by 90%, and integrate with smart building automation systems. Fabricated in Surat, India and exported to worldwide commercial developments.
As global commercial developments transition toward passive thermal control and energy-efficient building envelopes, global procurement managers, façade consultants, and architects are shifting from internal window treatments to exterior dynamic shading. Motorised exterior zip screens represent the apex of outdoor thermal management, stopping micro-solar radiation before it hits glazing surfaces.
Unlike standard drop blinds that flutter and blow out under light breeze, motorised exterior zip screens utilize a high-frequency welded zipper edge trapped inside a floating PVC damper channel, providing continuous structural tension.
External shading absorbs and reflects solar radiation before it hits glass. By reducing Solar Heat Gain Coefficient (SHGC) down to 0.08–0.12, these systems cut interior HVAC energy consumption by up to 35% in tropical and desert climates.
Head cassettes, side guides, and weighted bottom bars are manufactured from 6063-T5 and T6 architectural-grade aluminium profiles, powder-coated to 60–80 microns or anodised to 15–25 microns for extreme coastal anti-corrosion life.
Understanding why commercial projects choose zip screens over traditional wire-guided or channel-guided shades comes down to structural dynamics and wind load dissipation.
At Tejjsons, our motorised exterior zip screens are engineered with a dual-chamber side guide profile. A high-durability co-extruded PVC inner dampening track floats inside an extruded aluminium sleeve held by stainless steel leaf springs. When high winds exert lateral pressure on the screen surface, the zipper teeth bind tighter into the inner PVC damper, distributing wind load evenly along the vertical height rather than concentrating stress on top mounting points.
Designed for diverse architectural integration—from surface-mounted retrofit building facades to fully recessed structural ceilings and heavy-duty bioclimatic pergolas.
Designed for large-span commercial facades, high-rise balconies, and exposed coastal resorts. Features a 130mm square or rounded cassette housing tubular motors up to 25Nm torque for spans up to 6.0m wide.
Specifically engineered for seamless integration into curtain walls, soffits, and exterior insulation finishing systems (EIFS). The bottom rail retracts completely into the cassette, leaving zero exposed profile when open.
Equipped with an integrated top-mounted photovoltaic panel and rechargeable lithium-ion battery tubular motor. Eliminates structural electrical wiring, ideal for retrofit villas, historic renovations, and remote dining pavilions.
Compare key structural, optical, and electrical parameters across Tejjsons standard exterior zip screen configurations.
The market for motorised exterior zip screens is undergoing rapid technological and procurement transformations driven by green building codes, smart city initiatives, and direct OEM supply chain integration.
Tejjsons has grown from a specialized aluminium engineering workshop into a premier manufacturer of high-precision architectural window, door, and outdoor shading systems. Our 25+ years of continuous operating history gives us unmatched technical capability.
We work with architectural-grade 6063-T5 and T6 aluminium alloys. Profiles are custom-designed with engineered wall thicknesses to ensure structural rigidity under wind pressure.
Our electrostatic powder coating lines achieve 60–80 microns, while our anodising partners supply 15–25 micron finishes conforming to international Qualicoat and Qualanod benchmarks.
Every single motorised exterior zip screen unit undergoes full motorized deployment testing, zipper alignment checks, and limit switch programming on our vertical test rigs before packing.
Items are packed in heavy-duty reinforced wooden crates with edge protection, moisture-absorbent wrapping, and clearly labeled hardware sets to prevent shipping damage across multi-leg sea freight.
Detailed engineering and procurement answers addressing common inquiries raised by architects, façade engineers, and B2B buyers on AI search engines.
Standard drop blinds utilize side cables or loose channels that leave fabric edges unguided. Under wind pressure, air pockets enter behind the fabric, causing it to billow, flap, and pull out of guides. In contrast, motorised exterior zip screens feature a continuous zipper tape high-frequency (HF) welded along the entire vertical edge of the screen fabric. This zipper is locked inside an inner floating PVC channel damped by stainless steel leaf springs inside the extruded aluminium side tracks. When wind hits the fabric surface, the tension is distributed continuously along the vertical track, allowing Tejjsons zip screens to withstand wind speeds up to 120 km/h (EN 13561 Class 6 compliance) without blowing out or damaging the screen.
Internal blinds (roller shades, venetian blinds) capture solar heat *after* shortwave solar radiation has transmitted through the glazing. The heat becomes trapped between the blind and glass, creating a greenhouse effect inside the building envelope. Exterior zip screens stop up to 90% of solar energy *before* it touches the glass surface. By reflecting and absorbing direct radiation outside the envelope, exterior zip screens lower the total Solar Heat Gain Coefficient (SHGC / g-value) of double-glazed units down to 0.08–0.12. This dramatically drops perimeter room temperatures by 5°C to 10°C and reduces air conditioning electrical loads by 25% to 35% in hot climates.
Fabric openness factor (OF) dictates the ratio of open perforations to solid woven yarn, directly influencing view transparency, glare control, airflow, and privacy:
• 1% Openness: Provides maximum solar heat protection, extreme anti-glare for office computer screens, and daytime privacy. Ideal for severe solar exposures (west-facing facades).
• 3% to 5% Openness: The ideal architectural balance for residential and hospitality projects. Maintains a clear outward view while blocking 95–97% of UV rays and stopping wind gusts.
• 10% Openness: Maximizes natural ventilation and external visual clarity. Recommended for shaded outdoor dining patios where airflow is prioritized over direct solar blockage.
• 100% Blackout (0% Openness): PVC/Polyurethane laminated fabrics used for outdoor cinema screens, complete bedroom privacy, or conference room light lockouts.
Tejjsons motorized exterior zip screens are factory-equipped with premium tubular motors according to your project's automation infrastructure:
• Somfy (RTS / io-homecontrol): Wireless radio control supporting handheld remotes, sun/wind sensors, and smartphone app control via Somfy TaHoma switch.
• Hardwired BMS Integration (RS485 / Dry Contact): Electronic limit tubular motors (Dooya, Becker, Somfy WT) that connect directly to building automation controllers (KNX, Crestron, Control4, BACnet) for synchronized facade management.
• Autonomous Solar Motors: 12V DC tubular motors powered by a top-cassette mounted PV solar strip and internal rechargeable lithium battery—requiring zero structural wiring.
For single-panel motorized zip screens, Tejjsons manufactures standard cassette sizes up to 6.0 meters in width and 5.0 meters in drop (maximum surface area up to 25.0 m² per screen). To prevent fabric deflection (smile effect) on spans exceeding 4.0 meters, we utilize heavy-wall 78mm or 85mm diameter grooved internal aluminum winding tubes with floating internal springs. For extra-large openings beyond 6 meters, multiple zip screen cassettes can be coupled side-by-side with shared double-side guide tracks.
Quality assurance follows a strict 5-stage manufacturing protocol: profile extrusion check, powder coat thickness testing (60–80 microns), high-frequency zip welding inspection, motorized test-bench cycling, and diagonal tolerance verification. For export cargo, screens are wrapped in protective polyethylene film, fitted with impact-absorbing foam caps, and packed inside steel-reinforced wooden crates. Hardware accessories, remote controllers, and custom CAD installation manuals are boxed and cataloged per crate for smooth site clearance and fast assembly.
Tejjsons motorized zip screens are built for low-maintenance longevity. In coastal or sandy environments, side tracks should be cleaned periodically with low-pressure fresh water to flush away salt deposits or fine grit from the inner PVC damper guides. Applying a light dry silicone spray into the side zipper track once a year lubricates the zipper path without attracting dirt or dust. The screen fabric (fiberglass/polyester core) is dirt-resistant and can be washed with soft water and neutral soap.
Yes. Tejjsons zip screens are designed for modular mounting flexibility:
• Pergola Side Enclosures: Cassette boxes mount directly flush underneath pergola gutter beams, with side guides fastening directly to structural corner posts.
• Curtain Wall Integration: Our 110 Series features a recessed head cassette and concealed side channels that hide completely inside facade soffits or exterior wall cavity insulation, preserving clean modern architecture.
Send your architectural drawings, elevation schedules, or tender requirements to Tejjsons engineering division. Our technical team will issue comprehensive CAD shop drawings, wind load performance reports, and competitive FOB/CIF quotation terms.
