MircroLouvre - External Solar Shading

What is MicroLouvre?

MicroLouvre™ is a fine mesh, woven from miniature woven bronze louvres, only two times thicker than a human hair, angled to block and control sun, glare and light, which can be easily and inconspicuously installed externally on buildings, in lighting units, display cabinets and many other applications.


There are over 700 micro louvres, each only 0.33mm thick x 1.27mm wide, in every metre of mesh, normally coated in protective black polyester for a durable, light absorbing finish, almost eliminating re-reflected sun and light. However, MicroLouvre™ is available in a wide range of colours to suit the application.

These micro louvres block 100% of any direct sun or light angled as low as 40⁰ or conversely, permit a maximum transmitted direct light of over 80% at 0⁰, enabling total control of sun and/or light for sun shading, light and glare control, light diffusion and direction.

MicroLouvre™ is unique, embracing the three R’s of conservation, ‘Reduce, Re-use and Recycle’ and is exclusively manufactured in the UK by Smartlouvre Technology Ltd, where the environmentally friendly and efficiently recyclable raw copper filaments are formed, woven and coated for durability and long life.

Sun and Heat Control Key Performance Indicators

  • 100% shading at sun angle greater than 40⁰

  • 92% solar radiation absorption

  • 86% reduction of solar heat gain

  • 80% open area for natural ventilation

  • Improve occupant comfort and efficiency

  • 45% back of room daylight transmittance

  • 25% air conditioning savings possible

  • Health & Safety insect screening


How does MicroLouvre™ work – in Buildings?


Sun Control

Unarguably, apart from not having windows, the best way to stop solar heat gain is to stop the sun from hitting the glass and the building in the first place. Brise Soleil, literally French for ‘sun breaker’ is a modern description for such a barrier, and, MicroLouvre™ is the ultimate ‘invisible’ Brise Soleil.

MicroLouvre™ provides a minimum of 32% shading at any time of day even with the lowest possible sun angles. As the sun’s angle increases, so does the shading until, from as low as 40⁰, MicroLouvre™ blocks 100% of the harmful effects of the sun.

MicroLouvre™, with its special black polyester coating, absorbs the sun’s energy like a sponge, killing almost all of the sun’s rays both directly and when being re-reflected. MicroLouvre™ works like a heat sink for the building, absorbing and dissipating heat away from the façade.

Energy Saving

Because of the protection from the heat of the sun, some 60% or more of the air conditioning cost for a room can be achieved whilst reducing the extreme hot spot and cold spot effects of air conditioning, thereby improving thermal comfort.


Natural Working Environment

Natural light, which is variable, constitutes an important factor for comfort and well-being when controlled and managed properly in order to avoid glare, which causes fatigue especially on computer screens.

Occupant comfort and efficiency

As with excessive heat which is proven to dramatically reduce efficiency, visual comfort also guarantees the efficiency of employees while at work.


The wafer thin louvres, only two times thicker than a human hair, allow a massive 80% free air passage. Almost uninterrupted natural ventilation is possible if required.

Wind Resistance

The same 80% free air passage means that MicroLouvre™ presents a very low wind resistance of less than 25 kgs per m² when subjected to a 60 mph/100 kph winds. MicroLouvre™ screens have survived hurricane force winds of over 100 mph/161 kph.


Weather Protection

MicroLouvre™ mesh acts as a primary barrier which dissipates even driving rain in to a more passive mist, thereby providing protection to ageing windows and facades and prolonging building life.

Insect Screening

With over 700 louvres per metre,  MicroLouvre™ also acts as an effective insect screen.

Building Rejuvenation and Longevity

As well as all the other advantages, MicroLouvre™ can be used to update and rejuvenate tired old buildings and facades. Old windows and cladding can be quickly and easily transformed to not only look good but also comply with current regulations, extending building life, increasing rentals and saving energy.


How does MicroLouvre™ work? – Light and Glare Control Light Control

MicroLouvre™ acts as a directional light filter that allows light to pass through in one direction whilst blocking vision of the light source from the opposite direction. MicroLouvre™ can be progressively angled to increase or decrease the light filter.

MicroLouvre™ can be produced in a wide range of colours and finishes in order for Lighting Engineers, Exhibition and Display Manufacturers and Interior Designers to achieve exactly the active or passive lighting effects required.

Glare Control

MicroLouvre™’s sun control characteristics also work to shade signs, traffic lights, displays and even people from intrusive bright light.


Privacy and Security

MicroLouvre™’s ability to block glare and light, whilst maintaining vision, can be reversed to allow clear vision in one direction whilst blocking intrusive and dangerous snooping from the other direction. Perfect for cashiers, computer screens and many other applications.


Why is MicroLouvre™ normally black

MicroLouvre™ can be produced in any colour, but there are several reasons for having external screens in black (frames can be any colour). Light, and the sun’s energy, have to be absorbed and not re-reflected into the building. Black acts as a ‘sponge’ absorbing the energy which is then dissipated externally. Also, normal glass, in its neutral state, without back lighting, always looks black so MicroLouvre™ screens replicate this effect giving buildings a uniform appearance. Finally, the darker the colour, the better the outward visibility because of the lack of re-reflected light.