Sound proof insulation
Lisbon Cruise Terminal

Two needs one solution:
the added value of Diasen

The sound proof insulation project of the new cruise terminal in Lisbon is a manifesto in which Diasen’s ecological and sustainable solutions were applied in many strategic areas of the facility.

The Portuguese capital’s link with water is inseparable, thanks to the Rio Tejo that runs alongside it for a few kilometres before flowing into the Atlantic Ocean. Just before the mouth – between the Lusitanian capital’s two famous bridges, the Vasco da Gama bridge and the 25 Abril bridge, – stands this new building that has revolutionised Lisbon’s skyline and the view of the city from the river, without hiding the architectural works and the most ancient buildings from view.

The project is signed by the great Portuguese architect João Luís Carrilho da Graça, offering a modern gateway to the city for those arriving from the sea, literally resting on the waters of the River Tejo.

The facility has received major international recognition by winning awards such as:
Best Public Project in 2017 and 2018
– Europe’s Leading Cruise Port in 2016, 2017, 2018, 2019 and 2020
– Prémio Valmor and Municipal de Arquitetura in 2017

Architect: João Luís Carrilho da Graça
Time of realization: 6 weeks
Location: Lisbon, Portugal
Intervention: Acoustic insulation and soundproofing 

Thermal conductivity

λ = 0.045

Thanks to the right mix of carefully selected natural raw materials, the product achieves very high thermal insulation performance

Sound absorption

NRC = 0.75

Average between frequencies 250HZ, 500HZ, 1000HZ, and 2000HZ describing the sound absorption performance of a material

Fire reaction

CLASS A1

Class A1 according to UNI EN ISO 13501-1. Zero flame generation and smoke emission.

Download

Download the documents and discover the technical details of the system-applied acoustic and thermal insulation solutions in the Lisbon cruise terminal project.

Technical insights

Diasen acoustic and thermal insulation systems were applied to over 30,000 sqm of walls and ceilings:

Diathonite Evolution cork-based mortar was used to thermally insulate the ceilings of the underground garages from the rooms on the ground floor of the structure, which house shops and waiting rooms. Diathonite Evolution was sprayed on the concrete surfaces, previously treated with Aquabond adhesion aid. The mortar, reinforced with Polites 140 fibreglass mesh, was applied with an average thickness of 3 cm and smoothed first with Argacem HP and then with Argacem Ultrafine to make the surface smooth, on which the Acrilid Protect Coating finish was applied to complete the system.

The highly breathable ecological mortar Diathonite Deumix+ (μ = 4) was applied to the walls of the basement and ground floors to protect them from rising damp that can affect the structure of a building facing a major river.

Diathonite Acoustix+ ecological sound-absorbing mortar was, instead, used to eliminate reverberation in passenger transit and commercial areas and to acoustically isolate technical rooms and control and security rooms where machinery is present. Diathonite Acoustix+ was applied with thicknesses ranging from 3 to 5 cm.

Used products

Below is the focus on each solution applied to the system to ensure the required performance of the acoustic and thermal insulation project.

Application method Diathonite Acustix+

Learn how to apply ecological mortar acoustic plaster on all types of uneven surfaces and how to prepare the substrate for proper product adhesion.

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Acoustic and thermal insulation in one solution: how to save space and costs

Public spaces in general are considered by legislation as sources of potentially polluting noise. Voices, playing music, banging, moving chairs and tables, but also machinery, installations, refrigerators, etc. are elements that can disturb the urban environment in general. In fact, in order to define the best solution for soundproofing a room, it is first necessary to understand which are the main outlets for the noise and vibrations produced. Soundproofing the walls and/or ceiling of rooms is ideal if the noise comes from voices, chattering, shouting or music, TV or any other system that emits sound and noise.

Diasen eco-mortars for acoustic insulation and sound absorption occupy only the space strictly necessary to best retain sound waves. They are, moreover, considered perfect solutions, as they guarantee NRC values by applying a low thickness. This is possible due to their high porosity (>70%). As air is trapped inside and does not move, it acts as an excellent sound-absorbing factor, significantly improving acoustic comfort.

Further sound insulation and sound absorption projects