a wall covering assembly comprising a front layer of a vinyl coated fabric or paper , a rear ceramic layer , and an intermediate layer made of an acrylic compound containing finely divided phase change material such as crystalline acryl hydrocarbons or salt hydrates . the wall covering assembly facilitates thermo - regulation due to latent heat absorption and latent heat release in the phase transition range of the phase change material , which enhances the thermal comfort of rooms and leads to energy savings .