Patent ID: 8863457

Claim:
An interior decoration system comprising: a wall plastering comprising a wall plastering material and covering a wall of a building construction; and a unit fixed to the wall of the building construction and comprising: a body not covered by the wall plastering, the body having a functional, non-planar shape forming a volume configured to hold a secondary element, whereby the unit of the interior decoration system is provided with additional functionality; and wedge-shaped joining elements at peripheral edges of the body, wherein the wall plastering covers the wedge-shaped joining elements such that a top surface of the wall plastering is flush with the peripheral edges of the body and the unit is seamlessly integrated with the wall plastering, wherein the body and the wedge-shaped joining elements are constructed in a reinforced wall plastering material which has a predetermined composition with plaster as a substantial part, chosen such that the reinforced wall plastering material and the wall plastering material present around the body and covering the wedge-shaped joining elements comprise substantially the same substances and react in substantially the same way to temperature variations and humidity, wherein the unit further comprises at least one first reinforcing element, embedded in the reinforced wall plastering material of at least one of the wedge-shaped joining elements, which reinforces a connection of the unit to the building construction, and wherein the unit is fixed to the wall of the building construction by means of a fastener driven through the first reinforcing element and the corresponding one of the wedge-shaped joining elements into the wall of the building construction.