When developing an enormous new shopping centre in Seville, one of the primary dilemmas was how to keep the space comfortably cool under the intense summer sun, yet keep the energy bill under control.

Covering an area the size of 20 football fields, the Lagoh shopping and leisure complex in southern Spain sprawls over 100,000 m2, with an artificial lake covering 6,500 m2. Located in sunny Seville, the fourth largest city in Spain, the aim of the development is become the go-to shopping centre for the wider metropolitan area of 1.5 million residents. The chance for success is high – there is very little competition in the area – so it is expected that the shopping and entertainment space will receive 14 million visitors per year.

The challenge

The Spanish branch of the LAR Group owns the space, with L35 architects responsible for the design and Dragados hired as building contractors. From design to construction, the energy efficiency, sustainability and circularity of the building were of top priority for LAR España. Not only was their intent to create the largest shopping centre in Spain, it should also be the most sustainable. In a city like Seville where the summer temperatures can soar into the 40s, it makes perfect business sense to create a building that stays as cool as possible in the heat and keeps the valuable air-conditioned air within the walls. Combining leisure activities – including multiple restaurants and a cinema – with shopping, the success of the Lagoh centre depends very much on visitors feeling comfortable, spending more time there and ultimately, spending money. So it was vital to create an positive and inclusive environment, with optimal thermal and acoustic comfort. And with so many visitors arriving to enjoy entertainment options and shopping, fire safety was also a key concern.

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Project location

Lagoh shopping centre


The solution

The Lagoh centre is the first commercial centre in Spain where energy efficiency was carefully considered from design through the construction process and all the way to daily operations. The space received a very good BREEAM (Building Research Environmental Assessment Technology) rating during the design phase.

“We set out to build a world-class shopping centre for Seville that would also meet the highest standards for sustainability, circularity and energy efficiency”, says José Antonio García Agüera, Head of Retail Development, LAR España. “ROCKWOOL’s stone wool products help us achieve all of those while also optimising the fire safety and comfort of the building for the nearly 14 million guests we expect to visit Lagoh each year”.

Use less…and green the rest!

The Lagoh shopping centre is an active reference case for energy efficiency construction, and has been designed and built using recycled and recyclable materials. The circularity of ROCKWOOL’s products was a perfect match for  stone wool insulation and Rockpanel cladding that line the façades as well as 50,000 m2 of double-density insulation panels under its green roof. Stone wool insulation’s natural thermal properties help save energy in the space – after all saving a unit of energy (kWh) this way is 14 times less carbon-intensive than producing a unit of energy (kWh) using wind and 25 times less carbon-intensive than solar cells[1] – and the rest of the building’s energy needs are met with 100 percent certified renewable energy.

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How noise effects retail outlets

It does not matter whether a shop is selling clothes, coffee, books or gadgets – when customers step into a store, they want to feel welcome. Delivering that experience to customers requires ensuring the optimal acoustic comfort. If customers feel welcome in retail stores, the time spent in the stores is likely to increase. This is vital to the performance of retail stores, as even an average increase of 1 percent in dwelling time can see sales rise by 1.3 percent.

Research shows that optimising the acoustic environment in retail stores can increase revenues by between 5 and 10 percent. Conversely, if it is a noisy environment, customers shop as quickly as possible to escape the noise irritation. A comfortable acoustic environment improves the wellbeing of shoppers and helps to shape a desirable environment that leads to increased spending. Noisy environments where retailers do not optimise acoustics and reduce reverberation can consequently lead to a 28 percent reduction in sales.

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Securing safety and comfort – that lasts

The insulation wrapper prevents the spread of fire, securing fire safety for visitors, those employed at the centre, and also for the structure of the building and multiple units within. Stone wool also keeps the sounds of traffic from the nearby highways out of the building and from travelling between the shopping and leisure areas and cinemas. For movie-goers, Rockfon acoustic tiles help keep the sounds of the movies from blending together as noise. The overall aesthetic appeal of the space is also boosted by the attractive Rockpanel façades. Not only that, but as the façade panels are based natural stone wool, they are incredibly durable by nature, ensuring the best possibly quality for the years to come.

“Thermal and acoustic comfort are key to being at ease and being able to enjoy visiting the shopping centre. Sound and temperature affect the purchase experience, and ultimately, affect sales,” explains Miguel Rodríguez, Sales Manager at ROCKWOOL Spain. “In the case of the cinema, the insulation solutions from ROCKWOOL help ensure that external noise doesn’t interfere with the sounds from the movies showing.” 

The circularity of ROCKWOOL’s products proved to be a perfect match for the Laogh shopping centre. And the final result is a fantastic service for the Seville area. Not only do visitors enjoy comfortable shopping and entertainment whatever the weather, the centre has also boast local employment with new opportunities for more than 2000 people.


Why do we need ventilated façades?

A ventilated façade system as a whole protects against adverse weather conditions. As the façade is generally the largest surface area of a building, it’s important to consider the relationship between the internal and external environment – and properly insulate the façade to improve heat regulation. ROCKWOOL’s ventilated façade technology offers buildings thermal benefits, fire resistance and acoustic protection from the outside world.

Among other benefits, such systems also help to prevent:

  • Water damage
  • Risk of mould
  • Structural damage

With ‘open-joint’ solutions, rainwater that gets into the exterior barrier of the rainscreen drains through the air gap. This protects the inner layer of insulation from excess moisture.

Learn more about ROCKWOOL’s ventilated façade systems here

Project Data

Year 2019
Building Type

Commercial centre


Ventilated façade, ETICS system

Product type

Ventilated facade: REDAir System, with VENTIROCK DUO panel and Rockpanel exterior cladding, ETICS: REDArt System with the ROCKSATE DUO PLUS panel, Deck Cover: insulated with DUROCK Energy panel, Ventilation ducts: protected with the Conlit Ductboard 120 System, Rockfon Acoustic Ceilings


[1] Material Economics, 2018 – calculations based on: BPIE, “Europe’s buildings under the microscope - A country-by-country review of the energy performance of buildings”; European Commission, Joint Research Centre: EDGAR - Emissions Database for Global Atmospheric Research, ”CO2 time series 1990-2015 per region/country” (2017); EIA (U.S. Energy Information Agency), Frequently asked questions, ”How much carbon dioxide is produced when different fuels are burned?”