Lime mortar, a traditional binding agent composed of lime and sand, offers distinct advantages over cement-based alternatives. Its superior flexibility and breathability make it an excellent choice for stonework preservation. By employing lime mortar, one can enhance the durability and structural integrity of stone constructions while simultaneously opting for a more eco-friendly and sustainable solution. When undertaking the replacement of lime mortar, it is imperative to ensure proper preparation of the joints. The existing mortar must be meticulously removed to create adequate space for the new mixture to adhere and solidify effectively. Following this crucial step, the exposed joints should be thoroughly saturated with water, establishing optimal conditions for the fresh mortar to set. Upon application of the lime mortar, it is advisable to envelop the stonework with hessian, a natural fabric material. This covering serves a dual purpose: it cultivates an ideal environment for the curing process while safeguarding the newly applied mortar from potentially detrimental weather conditions. Once the mortar has partially set, it should be carefully brushed back. This final step exposes the aggregate within the mortar, resulting in a structure that is both watertight and permeable to air, ensuring long-lasting protection for the stonework. We also do sandstone restoration, stone cleaning and stone masonry repairs throughout Edinburgh and surrounding areas. Call today to arrange a free quotation.