Method for the manufacture of an insulation moulding, in particular of refrigerating appliances, in which the moulding is provided by filling a cavity between an inner and an outer wall of an open-box-shaped mould with a polyurethane reaction mixture and allowing the polyurethane reaction mixture to cure to a polyurethane containing polymer C, the inner and outer wall being arranged in a fixed distance to one another and each wall comprising a bottom face and a plurality of side faces (1, 2, 4, 5), whereas the polyurethane reaction mixture is fed through an inlet opening positioned in the middle area of the bottom face of the outer wall, wherein before filling the cavity, the mould is turned with the bottom face of the outer wall downwards so that the polyurethane reaction mixture is foaming upwards to fill the cavity, characterized in that the polyurethane reaction mixture comprises an isocyanate component B which is reacted with an emulsion comprising an isocyanate-reactive composition A, containing a polyol mixture A1 consisting of at least three polyols A1a, A1b and A1c as the continuous phase and at least one physical blowing agent T as the disperse phase, wherein: (i) A1a is a polyether polyol having a hydroxyl value from 15 mg KOH/g to 550 mg KOH/g and a functionality from 1.5 to 6.0, obtained by the addition of an epoxy to one or more starter compound(s) selected from the group consisting of carbohydrates and difunctional or higher-functional alcohols; (ii) A1b is a polyether polyol having a hydroxyl value from 100 mg KOH/g to 550 mg KOH/g and a functionality from 1.5 to 5.0, obtained by the addition of an epoxy to an aromatic amine; (iii) A1c is a polyester polyether polyol having a hydroxyl value from 100 mg KOH/g to 450 mg KOH/g and a functionality from 1.5 to 3.5, obtained by the addition of an epoxy to the esterification product of an aromatic dicarboxylic acid derivative and a difunctional or higher-functional alcohol. an isocyanate-reactive composition A, containing a polyol mixture A1 consisting of at least three polyols A1a, A1b and A1c as the continuous phase and at least one physical blowing agent T as the disperse phase, wherein: (i) A1a is a polyether polyol having a hydroxyl value from 15 mg KOH/g to 550 mg KOH/g and a functionality from 1.5 to 6.0, obtained by the addition of an epoxy to one or more starter compound(s) selected from the group consisting of carbohydrates and difunctional or higher-functional alcohols; (ii) A1b is a polyether polyol having a hydroxyl value from 100 mg KOH/g to 550 mg KOH/g and a functionality from 1.5 to 5.0, obtained by the addition of an epoxy to an aromatic amine; (iii) A1c is a polyester polyether polyol having a hydroxyl value from 100 mg KOH/g to 450 mg KOH/g and a functionality from 1.5 to 3.5, obtained by the addition of an epoxy to the esterification product of an aromatic dicarboxylic acid derivative and a difunctional or higher-functional alcohol. (i) A1a is a polyether polyol having a hydroxyl value from 15 mg KOH/g to 550 mg KOH/g and a functionality from 1.5 to 6.0, obtained by the addition of an epoxy to one or more starter compound(s) selected from the group consisting of carbohydrates and difunctional or higher-functional alcohols; (ii) A1b is a polyether polyol having a hydroxyl value from 100 mg KOH/g to 550 mg KOH/g and a functionality from 1.5 to 5.0, obtained by the addition of an epoxy to an aromatic amine; (iii) A1c is a polyester polyether polyol having a hydroxyl value from 100 mg KOH/g to 450 mg KOH/g and a functionality from 1.5 to 3.5, obtained by the addition of an epoxy to the esterification product of an aromatic dicarboxylic acid derivative and a difunctional or higher-functional alcohol.