A landmark building will be one of the most energy efficient buildings in Scotland due in part to glass coatings from Pilkington UK.

The 122 Waterloo Street development (pictured) will be the Glasgow headquarters of global financial services firm Morgan Stanley.

The scheme has been certified BREEAM Excellent, and achieved an ‘A’ rated Energy Performance Certificate (EPC), the latter based on a detailed assessment of the building’s energy performance.

The glazing helps to minimise this by reducing energy emitted from the building, as well as the heating effect of the sun, both of which can make maintaining a comfortable interior climate more energy-intensive.

The building will offer occupants floor-to-ceiling glazing throughout, with almost uninterrupted views due to the latest Schüco curtain-walling system designed, manufactured and installed by Edinburgh-based façade specialist Charles Henshaw & Sons.

A glass for all seasons

The scale of the building and the large area of glass used means that excessive radiation of heat from the building could lead to rapid heat loss during colder conditions, requiring an increase in heating to keep the interior warm.

To mitigate this effect, the glazing includes a Pilkington Optitherm S1 Plus low-emissivity coating which reflects radiated heat back into the building.

The second issue that can affect buildings where most of the envelope is glazed is excessive heat build-up when the sun shines directly into the interior.

This can be a challenge for building managers, which often require plenty of energy-intensive air conditioning.

To combat this, a solar-control coating was used. It helps reduce the amount of heat energy that is able to enter the building while maintaining high levels of transparency.

Michael Metcalfe, commercial sales manager at Pilkington UK, said: “The Pilkington Suncool 70/35 T coating selected by the design team offers high visible light transmittance, reduced solar transmittance and excellent low-emissivity all in one product.

“This means the floor space will be brightly lit by sunlight but won’t suffer from overheating on warmer days.”

Clear views

The coatings are not the only innovative part of the glazing used in the project, as the glass is held in place by the latest structurally bonded curtain wall system from manufacturer Schüco.

Each unit contains a large pane of clear glass and a smaller pane of opaque, coloured spandrel glass, creating horizontal lines across the façade between each floor of the building.

The nine-storey building was comlpeted in December 2017 and also includes 155,000ft2 of office space.