This European Standard specifies the characteristics and performance of preformed plasterboard cornices intended to be used in building construction works either as part of the original specification or subsequently for improved decorative enrichment of the wall/ceiling angle in rooms. This standard covers the performance characteristics: reaction to fire and flexural strength. This standard covers also additional technical characteristics that are of importance for the use and acceptance of the product by the Construction Industry and the reference tests for these characteristics. It provides the assessment and verification of constancy of performance of the products. This standard does not cover plain plaster and gypsum fibrous plasterwork cornices.