5 real-demo-cases have been selected which on top of covering different building typologies and climates (Continental, Mediterranean and Oceanic) will also test different solutions offered by the BIO4EEB project.

Suburban two-families house refurbishment in Lithuania

It is estimated that today residential buildings make up 2/3 (64%) of the total area of the Lithuania’s building stock, where apartment buildings and individual (private – single-family house, blocked house) houses, judging by the area, are distributed in similar parts (29% and 34% of the total area of the building stock). The demo building represents national residential building stock with high replicability potential. The building was built in 2008. The total floor area of building is 388m2. The exterior load-bearing walls are built with silicate block, foundations made of reinforced concrete, metal roof, PVC double glazed windows, thermal insulation – polystyrene foam (thickness 150 mm), wall surfaces are finished with plaster. The building has a basement and two floors. The house is heated with heat pump and wood pellet boiler (combined).

Historical/protected residential complex refurbishment in Spain

This demo case residential complex was built in 1930s and is located at the northern part of Mallorca Island. This building is listed in the Catalogue of Elements of Artistic, Historical, Environmental and Heritage interest in Mallorca. Its protection level is subject to protection of certain elements, such as facades, terraces and gardens. The building has 3 floors (ground floor, first floor and attic) with a total of 600 m2 built area. In the whole house, there are original wooden windows without isolation and the typical Majorcan wooden/aluminium shutters. The roof is covered with clay tiles. The purpose of this demo-case is to demonstrate interior BIO4EEB renovation technologies’ performance in a historic residential building. As it is a protected building and the façade cannot be changed, all the renovation activities will focus on internal envelop with Posidonia + PECs Bio-based foams and installation of new windows of Bio-Polyurethane.

Single family residential refurbishment/new construction in Germany

This demo case was built in 1950 as detached single family house, now it will be restructured, modernized and extended as an apartment house with 3 condominiums. The total floor area is 425 m2 + 112 m2 in the cellar. The total area of external walls is 420 m2. The purpose of this demo-case is to demonstrate the application of the BIO4EEB technologies in new and existing buildings. The pre-fabricated rooftop extension and the new north façade were selected to test Bio4EEB technologies as panels and insulation on the exterior walls and on the roof. The north façade on the first and second storey are an additional opportunity to install and test five BIOPolyurethane windows in two different sizes and partitions. Approximately 115 m2 of the bio-based prefabricated façade will be applied to the roof-top extension walls whereas 65 m2 of the bio-based ventilated façade will be applied on the new parts of the north façade. The new rooftop is an opportunity to apply and test Bio4EEB panels and insulation on a surface of approximately 95 m2. The rest of the already existing exterior walls will be cladded with a conventional thermal insulation composite system. The implementation of conventional technologies and innovative bio-based Bio4EEB technologies at the same time will provide the opportunity to compare these.

Rural single family residential refurbishment in Czech Republic

The un-refurbished Czech rural houses built in the period 1921-1945 have rather poor energy performance. The energy saving potential of this part of the Czech housing stock is worth paying attention. About 60-70% of rural buildings originating from the pre-war period do not meet the current energy efficiency standards. This demo site is a typical rural family house built in 1927. Bathroom, kitchen, toilet, living room and one bedroom at the ground floor. Two bedrooms in the attics. All the vertical load bearing structures are 450 mm thick masonry cavity walls with 150 mm air space. The floor structure above the ground floor is a timber joist ceiling. The roof truss is made from timber and the roof is covered with clay roof tiles. The total floor area in the house is 144 m2. The conditioned floor area is 127,7 m2. The windows are wooden box-type windows, already renovated, the outer sash has a double glazing.

Refurbishment of former train maintenance halls into offices in France

The BIO4EEB experiment will take place on a requalification project of an industrial wasteland in Vitry-sur-Seine near Paris into a vast multi-year 18,000m² program. Inside this project, BIO4EEB will focus on the former train maintenance halls “Halles des Ardoines”. The building is the subject of an initial prefiguration phase where it is transformed into offices and work spaces for local sustainable SMEs, including CYNEO – BYCN’s collaborative reuse platform. The ambition of the general project is to create a vibrant, mixed-use neighborhood in a productive city. The “Halles des Ardoines” has the specific strong ambition to become the demonstrator of the low-carbon city. The purpose of this demo-case is to demonstrate the application of the BIO4EEB technologies in an existing historic building, while respecting the constraints of the façade style. Approximately 100 m2 of the bio-based prefabricated façade will be applied to the exterior walls. The process will include an initial 3D scan of the existing façade to facilitate industrialization and respect for the style of the façade. A monitoring before and after the implementation of BIO4EEB technologies will make it possible to compare the performance of the project.