• Scaffolding and temporary roof: LAYER
  
  Layher is the European leader in the scaffolding business. Since 1980, when the company began business in France, it has revolutionised the design of scaffolding, making it a major contribution to improved safety and productivity that is readily available to all professionals.
  
  
  
  

• Hoarding/Decorative scaffold wrap: JCDecaux Artvertising/JCDecaux Palissades
  
  JCDecaux Palissades fences off work sites and provides communication opportunities.
  JCDecaux Artvertising decorates the city and creates innovative opportunities for expression.
  
  
  
  

• Historical panels and photos: ALTO SIGNALETIQUE
  
  Alto has been a signage designer and manufacturer since 1997.
  
  
  

• Masonry - Building stone: H. CHEVALIER/QUELIN
  
  
  Founded in 1946 by master stonemason Henri Chevalier the company first specialised in building restoration before moving into renovation and major rehabilitation. Then, 20 years ago, it turned to a third activity: creation of a stone-cutting workshop.

  
  
  

  
  
  
  

Ever since it was founded, Quelin has been involved in the conservation and safeguarding of historical buildings. Because of its skills - which have been recognised by a Qualibat high-technical-competence certificate issued for restoration of historic monuments - it is able to meet the requirements of a large range of clients (ministries, local and regional authorities, and private individuals).

• Sculptures: TOLLIS/JEAN GARLEITA
  
  Founded to exploit a patent for cleaning façades of construction stone using compresses (instead of the traditional technique of removing dirt by abrasion), Tollis specialises in the restoration of stone, metal and mosaic sculptures. Restoration of sculptures has been its main line of business since 2003.

  For the Hôtel de la Marine demonstration project, Tollis paired up with an ornamental sculptor, Jean Garleita.

  References: the facade of the Sorbonne chapel, the gallery of the Paris Museum of Decorative Art.
  

  
  
  
  

• Roof framing and covering: BERNARD BATTAIS & FILS
  
  
  Founded in 1969, Bernard Battais & Fils is a company specialising in the restoration of roof covering and framing, especially for historical buildings.
  
  
  

• External joinery: ATELIERS PERRAULT FRERES
  
  
  Ateliers Perrault Frères is a company specialising in ornamental iron and metalwork, joinery, cabinetmaking and carpentry. Its services include both restoration and production of identical copies of historic items.
  References: Richelieu Wing of the Louvre, Fontevraud royal abbey, Château de Versailles, etc.
  
  

• Paintwork: ARCANES
  
  Arcanes specialises in the restoration of monumental décor. It was founded by two professional painting restorers: Cinzia Pasquali and Véronique Sorano-Stedman.
  
  
  

• Giltwork: ATELIER MARIOTTI

  Founded in 1973 by Lucien Mariotti, the company has two main activities: restoration and conservation of giltwork and ornamental furniture, and production of copies.

  
  
  
  

• Joinery: ATELIERS DE LA CHAPELLE
  
  Founded in 1969, Ateliers de la Chapelle comprises four complementary workshops:
  - a restoration workshop specialising in large décor elements, parquet flooring, and solid and veneered or inlaid wooden church and domestic furniture;
  - a joinery workshop specialising in the manufacture of bookshelves, parquet flooring, and panelling; this workshop also has a cabinetmaking section specialising in the manufacture of classic and contemporary chairs and furniture;
  - an ornamental and statuary sculpture workshop;
  - an engineering and design office.
  
  
  

• Parquet flooring: PARQUETS BRIATTE
  
  Parquets Briatte specialises in parquet flooring and is one of the leaders in its profession.