Historic vault masonry is a highly specialized restoration craft requiring deep knowledge of traditional construction techniques. The process begins with detailed documentation of the existing condition, including preserved vault fragments, geometry, and structural damage. Surveys, measurements, and photographic documentation are carried out to understand the original construction. Based on this analysis, various templates and formwork are created to accurately reproduce vault shapes and curves. Missing sections of the vault are reconstructed using materials and mortars appropriate to the historical period. Original masonry techniques and load distribution principles are carefully respected. Historic vault masonry is particularly relevant for churches, castles, cellars, and heritage buildings. Proper execution ensures both structural stability and architectural authenticity. This approach preserves the historical character of spaces while maintaining their long-term functionality.