Floor and wall covering businesses supply and fit materials used to finish or protect floors and walls in homes and commercial premises. Their work may include carpets, vinyl, laminate, engineered or solid wood flooring, ceramic and porcelain tiles, stone, wall tiles and decorative wall coverings. Some businesses focus on installation, while others also sell materials, arrange measuring and advise on suitable finishes for different rooms and levels of use. Typical services include preparing and levelling surfaces, removing old coverings, laying underlay and fitting new flooring, as well as cutting and fixing tiles or wall coverings. Installers may add trims, thresholds, grouting and sealants, and can work around stairs, skirting boards and fixtures. Customers may also be offered repairs, replacement of damaged sections or maintenance guidance. The materials and methods used depend on the condition of the surface, moisture levels and the requirements of the space.