Experiments Has been made on lime mortar which have a weak resistance so we added materials like pozolan, and bricks to improve the mechanical properties of the mixture, as we added fiberglass to the mix, and study their effect on the mechanical properties of mortar, also experiments has been made on natural limestone which used in the construction, experiments on samples of mural prismatic composed of stone and mortar to see pressure strength of mural samples, and mural samples subjected to curvature to determine tensile strength of stone walls with limestone mortar reinforced with fiber glass. We observed increase in the mural samples tensile strength about 73% when we added a small amount of fiber glass doesn't exceed 2% of the proportion of the existing lime in the mixture, which shows the effective improvement in the mortar extracted specifications.