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. 

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

insulation

Acoustic insulation

security

Resistance class

thermal-transmittance

Thermal Transmittance

Uw 1.87 W / m2 K (26mm)
Uw 1.58 W / m2 K (38mm)
Uw 1.07 W / m2 K (54mm)

watertightness

Watertightness

ISO EN 12208 + ISO EN 1027

up to E900 (26mm)
up to E1050 (38mm)
up to E1200 (54mm)
air-permeability

Air permeability

ISO EN 12207 + ISO EN 1026

up to Class 3 (26mm)
up to Class 4 (38mm)
up to Class 4 (54mm)
wind-resistance

Wind resistance

ISO EN 12210 + ISO EN 12211

Class B3 (26mm)
Class C5 (38mm)
Class B4 (54mm)
insulation

Sound insulation

ISO EN 10140 + ISO EN 717

up to 42 db
security

Security

ISO EN 1628 + ISO EN 1629 + ISO EN 1630

RC2: (WK2) *1
thermal-transmittance

Thermal Transmittance

Uw 1.56 W / m2 K (38mm)
Uw 1.06 W / m2 K (54mm)
Uw 0.89 W / m2 K (62mm)

watertightness

Watertightness

ISO EN 12208 + ISO EN 1027

up to E1200 (38 mm)
air-permeability

Air permeability

ISO EN 12207 + ISO en 1026

up to Class 4 (38 mm)
wind-resistance

Wind resistance

ISO EN 12210 + ISO EN 12211

Class B5 (38 mm)
insulation

Sound insulation

ISO EN 10140 + ISO EN 717

up to 38 db
security

Security

ISO EN 1628 + ISO EN 1629 + ISO EN 1630

RC2: (WK2) *1
thermal-transmittance

Thermal Transmittance

Uw 1.61 W / m2 K (38mm)
Uw 1.08 W / m2 K (54mm)

watertightness

Watertightness

ISO EN 12208 + ISO EN 1027

up to E1650 (38 mm)
air-permeability

Air permeability

ISO EN 12207 + ISO EN 1026

up to Class 4 (38 mm)
wind-resistance

Wind resistance

ISO EN 12210 + ISO EN 12211

Class C5 (38 mm)
insulation

Sound insulation

ISO EN 10140 + ISO EN 717

up to 40 db
security

Security

ISO EN 1628 + ISO EN 1629 + ISO EN 1630

RC2: (WK2) *1
thermal-transmittance

Thermal Transmittance

Uw 1.55 W / m2 K (38mm)
Uw 1.07 W / m2 K (54mm)

watertightness

Watertightness

ISO EN 12208 + ISO EN 1027

up to Class 8A (38 mm)
up to Class 8A (54mm)
air-permeability

Air permeability

ISO EN 12207 + ISO en 1026

up to Class 3 (38 mm)
up to Class 4 (54mm)
wind-resistance

Wind resistance

ISO EN 12210 + ISO EN 12211

Class B3 (38 mm)
Class C4 (54mm)
insulation

Sound insulation

ISO EN 10140 + ISO EN 717

up to 38 db
security

Security

RC2: (WK2) 2

RC2: (WK2) *1

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