Integrated Ventilation and Sunshade Cladding on Non-Insulated Walls

Many older and cost-sensitive buildings rely on non-insulated wall systems, either due to historical construction norms or low-cost prefabrication methods. These walls—typically concrete block, single-layer brick, or steel sheeting—lack a thermal break and thus become highly reactive to solar heat gain and airflow stagnation. Traditional insulation retrofits are often bulky, expensive, and sometimes non-compliant with zoning offsets or building preservation codes.

Jintong’s integrated sunshade and ventilation perforated metal cladding system offers a novel solution: it delivers airflow and radiant shielding without requiring insulation layers. Instead, it uses engineered air channeling and reflectivity techniques to create a cooling envelope effect across the bare wall. According to thermal façade studies by ScienceDirect, such configurations can reduce internal wall temperature by up to 9°C without added insulation mass.

The cladding unit consists of:

• Front louver sheet: Perforated anodized aluminum angled to deflect high-angle summer sun

• Air slot sub-frame: 50mm ventilated cavity layer to promote updraft-based convection

• Rear anchor brackets: Low-penetration clip system for direct-to-wall install

• Coated steel ribs: Embedded along vertical axis to strengthen wind resistance

📍 Case Study: Lima, Peru - Utility Substation Retrofit

An electrical substation built in 1998 was facing wall cracking and equipment overheating due to repeated solar expansion on non-insulated concrete. With no clearance for rigid foam insulation, the facility selected Jintong’s cladding system.

Results:

• Interior equipment bay temp dropped from 41.2°C to 31.4°C

• Wall surface expansion cracks reduced by 87% in 14 months

• Maintenance cooling costs dropped by 22%

The project is now referenced in Building Science Corp’s passive cooling design handbook.

🏗 Common Use Areas

• Single-layer masonry school walls in desert zones

• Warehouse or distribution center exteriors with tin skin

• Historic preservation buildings where no insulation intrusion is allowed

• Rural healthcare buildings with climate stability needs

🧪 Performance Metrics

According to simulations validated by NREL and airflow reports by ASHRAE, this system:

• Reduces solar radiation on bare concrete walls by 32–47%

• Delivers up to 15.4% cooling energy savings over unshaded bare walls

• Extends envelope lifespan by reducing moisture-driven wall damage

🔗 Internal Resources

• Sunshade kits for tin-clad walls

• Non-vent walls retrofitted in Singapore

• Utility cooling panel design

📞 Reach Out for Bare Wall Optimization

📞86 180 2733 7739
[email protected]
instagram.com/jintongperforatedmetal
WhatsApp: https://shorturl.at/jdI6P
LinkedIn: Andy Liu
YouTube: Jintong
perforatedmetalpanel.com

💡 Let Your Wall Breathe Without Foam

Curious how much solar shielding your old brick wall can gain with zero insulation? Ask our engineers to run a simulation tailored to your wall material and orientation.

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