Edifício Liberdade 49 | Ana Costa Arquitetura | © Ricardo Oliveira Alves

Avenida da Liberdade 49 | The rehabilitation of a distinctive property

Located in Lisbon’s most prestigious and attractive boulevard, the Liberdade Building 49 holds particular importance in OTIIMA’s rehabilitation project portfolio. The project is signed by the renowned architect Ana Costa and the distinguished real estate company Prime Portugal. This collaboration gave birth to a timeless and sophisticated project. The intervention returned the building to residential use, thus resuming the initial vocation of this Avenue in the center of Lisbon. This change in use from offices to housing necessitated modifying the façade to align with the new purpose. 

Edifício Liberdade 49 | Ana Costa Arquitetura | © Ricardo Oliveira Alves

Edifício Liberdade 49 | Ana Costa Arquitetura | © Ricardo Oliveira Alves

Innovative Spaces

A completely re-skimmed façade, large bay windows, and gold reflective panels lend the building an iconic and distinctive new look. The existing office building, designed by the Risco Architecture Office, utilized a system of metrics and proportions derived from the adjacent buildings (dating back to the end of the 19th century), to which a new “layer” was added. This alteration project was based on the principle of adding a new thickness to the façade, which would enable the creation of balcony openings and a system of reliefs and shadows that echoed the themes of the stonework. 

Edifício Liberdade 49 | Ana Costa Arquitetura | © Ricardo Oliveira Alves

Edifício Liberdade 49 | Ana Costa Arquitetura | © Ricardo Oliveira Alves

Community Impact

 Avenida da Liberdade, not only because of its scale but also because of its importance in the development of the city of Lisbon, was the scene of interventions of great architectural quality, which, despite being assumed to be something completely new, always established a dialogue with the city. The application of the  OTIIMA PLUS System  was thus the perfect solution to strike a balance between the privacy of living spaces and the creation of outdoor spaces that are as generous as possible. 

Edifício Liberdade 49 | Ana Costa Arquitetura | © Ricardo Oliveira Alves

The existing cantilever, approximately 25 cm in depth at the first-floor level, was leveraged to gain depth and align with the façade of the adjacent building to the south. Thus, a new “skin” was added using new materials and construction systems with different plastic characteristics, guaranteeing the necessary thermal and acoustic comfort. 

Newsletter

OTIIMA - Much more than a window

Subscribe






    Compare products

    Compare products easily by analyzing features and specifications side by side to find the best option for your needs.

    thermal-transmittance

    Thermal Transmittance

    watertightness

    Watertightness

    air-permeability

    Air permeability

    wind-resistance

    Wind resistance

    resistance

    Impact resistance

    insulation

    Sound insulation

    security

    Security

    thermal-transmittance

    Thermal Transmittance

    Uw Ug = 1,0 (38mm)
    Uw Ug = 0.5 (54mm)

    watertightness

    Watertightness

    ISO EN 12208 + ISO EN 1027

    E1200 (54mm)

    (4 classes above 9A) 1

    air-permeability

    Air permeability

    ISO EN 12207 + ISO EN 1026

    Class 4

    (600 Pa or 119 Km/h) 1 2

    wind-resistance

    Wind resistance

    ISO EN 12210 + ISO EN 12211

    Class C5

    (in 6 possible classes) 2

    resistance

    Impact resistance

    ISO EN 12600 + ISO EN 1630

    Class 5

    (2000 Pa or 200 Km/h)

    insulation

    Sound insulation

    ISO EN 10140 + ISO EN 717

    Rw: 42 db (up to)
    security

    Security

    ISO EN 1628 + ISO EN 1629 + ISO EN 1630

    RC2: (WK2)

    3

    thermal-transmittance

    Thermal Transmittance

    Uw Ug = 1,0 (38mm)
    Uw Ug = 0.5 (54mm)
    Uw Ug = 0.47 (62mm)

    watertightness

    Watertightness

    ISO EN 12208 + ISO EN 1027

    E1200

    (7 classes above 9A) 1

    air-permeability

    Air permeability

    ISO EN 12207 + ISO en 1026

    Class 4

    (600 Pa or 110 Km/h) 1

    wind-resistance

    Wind resistance

    ISO EN 12210 + ISO EN 12211

    Class B5

    (2000 Pa or 200 Km/h) 1

    resistance

    Impact resistance

    ISO EN 12600 + ISO EN 1630

    Class 5 (38mm / 54mm)

    1C1 | 2B2 | 1B1 2 (62mm)

    insulation

    Sound insulation

    ISO EN 10140 + ISO EN 717

    Rw: 42 db (up to) (38mm / 54mm)

    Rw: 44 db (up to) (62mm)

    security

    Security

    ISO EN 1628 + ISO EN 1629 + ISO EN 1630

    RC2: (WK2)

    3

    thermal-transmittance

    Thermal Transmittance

    Uw Ug = 1.0 (38mm)
    Uw Ug = 0.5 (54mm)

    watertightness

    Watertightness

    ISO EN 12208 + ISO EN 1027

    E1650

    (7 Clases superior a 9A) 1

    air-permeability

    Air permeability

    ISO EN 12207 + ISO EN 1026

    Class 4

    (600 Pa or 110 Km/h) 1

    wind-resistance

    Wind resistance

    ISO EN 12210 + ISO EN 12211

    Class C5

    (2000 Pa or 200 Km/h) 1

    resistance

    Impact resistance

    ISO EN 12600 + ISO EN 1630

    Class 5
    insulation

    Sound insulation

    ISO EN 10140 + ISO EN 717

    Rw: 42 db (up to)
    security

    Security

    ISO EN 1628 + ISO EN 1629 + ISO EN 1630

    RC2: (WK2)

    2

    thermal-transmittance

    Thermal Transmittance

    Uw Ug = 0.7 (38mm)
    Uw Ug = 0.7 (54mm)

    watertightness

    Watertightness

    ISO EN 12208 + ISO EN 1027

    Class 8A

    (450 Pa or 95 km/h)

    air-permeability

    Air permeability

    ISO EN 12207 + ISO en 1026

    Class 3

    (600 Pa or 110 Km/h)

    wind-resistance

    Wind resistance

    ISO EN 12210 + ISO EN 12211

    Class C5

    (2000 Pa or 200 Km/h)

    resistance

    Impact resistance

    ISO EN 12600 + ISO EN 1630

    Class 5

    (in 6 possible classes)

    insulation

    Sound insulation

    ISO EN 10140 + ISO EN 717

    Rw: 38 db (up to)
    security

    Security

    RC2: (WK2) 2

    RC2: (WK2)