Walter Collection, Hannover

Energetic optimization of the existing building, moss garden

For better thermal insulation of the lightweight concrete masonry the existing building was equipped with a back-ventilated curtain facade. Similar to the plumage of a bird the slate façade as external skin protects from water and the cold, on the other hand it serves as camouflage and as means of visual communication.

The local conditions like, for example, a sandy, nutrient-poor and acidic soil make it possible to create a moss garden, which can also survive under snowfields. Where normal flowering plants cannot grow cotton gras, saxifrage, lycopod, cranberries, sundew, bell heather and moor orchids can thrive.

PROJECT DATA

HWE-1
Shell construction, 1973

HWE-2
Local eagle owl

HWE-3
Plumage

HWE-4
Existing masonry block, lightweight concrete with enclosed expanded clay

HWE-5
Plates of argillaceous slate

HWE-6
Schistosity with blackish-grey, bluish-grey, greenish, yellowish, red and purple colour.
Oil and chalk paint on cardboard, 14,8 x 10,5 cm, 2000

HWE-7
Winter view, south-west

HWE-8
foxglove, mullein, larkspur
HWE-9
cranberry, cotton grass, lycopod

HWE-10
Winter view, north-east

HWE-11
Entrance area with figwort plants

HWE-12
Secret garden


ProgramEnergetic renovation (façade, roof, windows, oil condensing boiler), renaturation of the exterior spaces
StatusRealization
LocationHannover, Deutschand
AreaFacade: 200 qm, Garden: 2000 qm
ConstructionBack-ventilated façade, multi-layer layout
ServicesProgram and location analyses, artistic concept, technical concept, design planning, realisation, construction supervision
Date2000

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