This invention is related to a concrete wall production method with on-site casting The invention is particularly related to a method where the external facade of the building is formed together with the production of walls by placing the external facade siding into concrete mould that have been prepared for casting concrete during the on-site production of cast concrete walls. The aim of the invention is provide a method, which comprises the steps of preparing the moulds that shall be used in on-site cast concrete wall production, placing the external facade siding elements of buildings into the mould when the mould is being prepared, lifting the mould together with the external facade siding and carrying it to the area where the concrete will be poured therein, and pouring said concrete into said mould, and ensuring that the external facade sidings are fixed to the concrete while the concrete is setting.
