•Hydraulic lime is a good alternative to cement in manufacturing repair mortars.•Use of short fibers can reduce plastic shrinkage and improve durability of masonry.•Zeolitic additions further improve mechanical performances of hydraulic mortars. In a previous paper the authors demonstrated that adding glass fibers to hydraulic lime-based mortars leads to clear improvement in the post-cracking behavior. In order to enhance physical and mechanical performances of the above fiber reinforced mortars, the use of zeolitic addition was proposed. A phillipsite-rich tuff and a zeolite A LTA were selected and added in the mixtures. A significant decrease in open porosity and increase in mechanical behavior was achieved with each addition. In particular 20% of LTA produces an improvement of flexural and compressive strength up to 150% compared with fiber reinforced mortars without addition.