The core activity of the company 'Toumi Toiture & Alina Promotions' encompasses the following areas:
* Roofing (Couverture): The company offers various types of roofing, including natural stone, tile, Eternit, Prefa, flat roofs, ventilated facades, and Bardo roofs.
* Sheet metal work (Ferblanterie): The company provides a wide range of services in the field of sheet metal work, including the installation of skylights, cladding of gutters, and the installation of chimneys.
* Waterproofing (Étanchéité): The company offers services in the field of waterproofing of flat roofs, including insulation and the laying of bituminous roofing membranes.
* Renovation (Rénovation) and Maintenance (Entretien): The company provides renovation and maintenance services for roofs and buildings.
* Real Estate (Immobilien): The company also offers services in the field of real estate sales.
Overall, the core activity of the company can be described as 'roofing, sheet metal work, and building renovation'.