The core activity of JA TOIT sàrl is to provide services in the construction sector, particularly in the following areas: carpentry, roofing and timber framing, sheet metal work and processing, roofing, installation and assembly of windows, doors, Velux (skylights) and parquet (parquet floors), staircase construction, and exterior fittings (such as terraces and balustrades). The company thus offers a wide range of services in the construction sector, from planning to the execution of construction projects.