Insulated wall panel

A method of manufacturing a wall panel, the method comprising:

• forming a reinforced cementatious layer including the steps of:
• i) pouring or injecting a slurry of uncured cementatious product into a mold,
• ii) embedding reinforcing material therein, and
• iii) curing the cementatious product to obtain a cured cementatious product having a first side and a second side;
• applying, to the second side of the cured cementatious product, an insulation layer, the insulation layer comprising a foam, wherein the insulation layer is chemically bound to the second side of the cured cementatious product without the use of an adhesive;
• and
• applying a veneer layer to the first side of the cured cementatious product.