This paper presents a study of aged mechanical properties of PVC/PMMA blends. For that purpose, composite of variable agent specimens from 1 to 4 year were prepared. The effect of strength values to increasing therefore PMMA polymer was used. As the PVC and PMMA are thermodynamically compatible polymers, therefore these polymers can be easily mixed with each other. The PMMA is causes significant modification in the blends structure and cells morphology. Several of mechanical tests, such as; tensile test, impact test, bending test and hardness test was investigated for the all blends. Based on the result the mixture has a stable foam structure, which is also resistant the aging. The mechanical properties were greatly influenced by the cellular structure of the foam. During the aging test the blends external changes can be determined. Due to this test, we can deduce the life of product.