Construction.449 2020-09-20by Antony Templier127 Views Construction.449 Written by Antony Templier Greb house of 140 m² with a floor. Project Data Place:Salles-sous-Bois Completion: Construction:Tunnel (GREB technique) with counterfacing mortar Visitable:No Press photos:No Living Area:140m2 U-Value (Wall):W/m2K U-Value (Roof):W/m2K Categories: Projects France, Greb house of 140 m² with a floor.