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External Venetian Blinds

Hallmark’s Trojan external venetian blinds are a most efficient and flexible form of solar control.


Enhance your indoor comfort with our highly-rated external Venetians.


Our outdoor shading solutions effectively block out heat, keeping your space cool while still allowing natural sunlight to filter through.


Choose External Venetian blinds for heat reduction, indoor comfort and cost savings

Why use External Venetian blinds?

Unlike internal blinds, our external venetian options reflect heat away before it reaches your windows, providing superior temperature control and energy efficiency.


Life cycle: Our trojan external venetian blinds have a life cycle of 20 – 25 years

Maintenance:  With our external venetian blinds maintenance is often overlooked as breakdowns rarely occurs, we still recommend an annual inspection by the user.


Wind Stable: Recent test conducted on external venetian blinds in wind tunnel tests have far exceeded our expectations, intact and still functioning in hurricane speeds. but we do still advise to use of a wind safety override.


Cost saving: In the long run our external trojan venetian blinds can be saving you energy costs in the short term with saving within the first year.


With the louvres closed, in say a bedroom, up to 97% of solar gain will not be transmitted through the glass. This reduces use air conditioning, saving energy and enabling natural ventilation.


In occupied areas external blinds with the louvres in the 45° working position our Trojan blinds will still reduce solar gain by over 90%

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What benefits can External Venetian blinds offer?

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Enhanced Temperature Control: Trojan External blinds effectively block and reflect heat before it reaches your windows, keeping your indoor spaces cooler and reducing the need for air conditioning.


Energy Efficiency: By reducing the reliance on artificial cooling, external venetian blinds help lower energy consumption, leading to cost savings on bills and a smaller carbon footprint.


Improved Comfort: These blinds allow natural light to enter while minimising glare and heat, creating a more comfortable and pleasant indoor environment.


UV Protection: External shading blinds protect your furniture, flooring, and interior décor from harmful UV rays, preventing fading and extending the life of your furnishings.

Where can external venetians blinds be used?

Residential Buildings: External Venetian blinds provide excellent temperature control, reducing heat gain and glare, which keeps homes cooler and more comfortable while also lowering energy costs.


Commercial Buildings: Trojan blinds improve energy efficiency by reflecting heat away before it enters the building, reducing the need for air conditioning and creating a more pleasant environment for employees and customers.


Office Buildings: External Venetian blinds help maintain a comfortable working environment by controlling sunlight and reducing glare on screens, which can enhance productivity and reduce energy costs.


Passive House Builds: External Venetian blinds are essential for passive house builds as they significantly contribute to energy efficiency by preventing heat gain, maintaining optimal indoor temperatures, and minimising the reliance on artificial cooling systems.

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How to Control

Shading needs to be dynamic to adjust to the weather conditions for maximum efficiency.


All remotely controlled from the interior on an electric motor and in colours to make a statement or blend with the façade.


To be most energy efficient there are many combinations of automated control by sun, light, wind or timer.


Trojan external blinds can also be linked to a BMS or Home Management System.


Needs to be a little more detailed, but can link to a content page regarding automation in buildings

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