Roof extension with extensive greening
At Ackerstraße 14-15 in Berlin Mitte, two new residential units each with a usable floor space of approx. 316 m² were built on the top floor of two transverse buildings.
After a structural upgrade of the wooden beam ceiling, the existing roof truss was demolished and restored to its original dimensions in accordance with the fire protection concept. The wind brackets of the roof structure were removed. Their function is now taken over by steel components.
The typical "Berlin roof" received a hard roofing as tile covering on the outside in the sloping roof areas as well as a bituminous roof covering in the flat roof area with an extensive greening applied on top.
The apartments are accessed through the existing staircase. The interior walls and apartment partition walls are built in drywall. The floors of the living areas received parquet flooring, in the kitchen and bathroom tiles have been used. Each apartment is equipped with a front roof terrace including wooden flooring.
Location: Ackerstraße 14-15, 10115 Berlin Mitte
Client: Ackerhöfe GbR Berlin
Executing company: ARIKON Sanierungsbau GmbH
Construction time: 08/2019 – 10/2020
Implementation: Loft conversion
Construction volume: 1,54 Mio. EUR
Special features:
- Safety staircases with flushing ventilation (compensation for omission of the second escape route)
- Crane erection in the inner courtyard of the first transverse building
The converted attic with a view of the television tower
The extensive greening
The extensive greening
Front roof terrace with wooden flooring and skylight with external sun protection
Roof terrace with wooden window door and external blinds
Wooden parquet flooring in the living area with adjoining roof terrace
The renovated and refurbished kitchen
The renovated bathroom
The stationary tower crane for the construction project was lifted into the first inner courtyard with the help of a truck-mounted crane
The stationary tower crane
The stationary tower crane
