Hollow Core Floor Plate Rectosten Spacer Stringer (for Private Housing) Stringer (for Industrial Buildings) Purlin for RectoSten Insulating Floor RectoSten/DF Insulating floor RectoLight light floor/DF floor with reversed floor plate Rectobéton floor Rectobéton Floor/DF Rector RS Floor Floor-Voided Floor Plate Column Beam with Constant Inertia (IC) Beam with Variable Inertia (IV) Bridge Beam Stock Beam (PSR) Rector Flat Beam (PPR) Rectangular Beam (PR) Floor Plate Pre-lintels Pre-wall ThermoLight Thermal Bridge Breaker ThermoRupteurs Thermal Bridge Breaker ThermoSten Thermal Bridge Breaker Thermoprédalle
| 1897 | Foundation of the Oscar Lesage tile works in Mulhouse | |
| 1953 | Foundation of RECTOR S.A., patent and trademark registration for the RECTOR prestressed concrete joist by the Costamagna Processes team in Cagnes-sur-Mer. Regarding the RECTOR brand name, the first suggested trade name was Record, it was then changed to Rectiligne (Rectilinear in English) and finally to its present name, to highlight the quality of its products, the staff’s upright business conduct, and the permanent commitment to innovation. | |
| 1960 | Production of the RECTOR prestressed joist by the Oscar Lesage tile works in Mulhouse | |
| 1976 | Foundation of Lesage Préfabrication S.A. | |
| 1993 | RECTOR company buyout by the Lesage Group in Mulhouse | |
| 2004 | Lesage préfabrication absorbs Rector SA and becomes Rector Lesage |
| 1980 | Launch of the RECTOR notched joist. | |
| 1995 | Launch of the current RS prestressed joist | |
| 2004 | Launch of the RECTOLIGHT floor | |
| 2005 | Launch of the RECTOR pre-walls | |
| 2006 | Launch of the THERMOPREDALLE, the pre-slab with thermal bridge breakdown | |
| 2007 | Launch of the IPSEO insulating floors range |
| 1987 | Start of the RECTOR pre-slabs production in Strasbourg | |
| 1988 | Second poduction unit for pre-slabs in Courcelles-sur-Seine (27) | |
| 2002 | New production hall for industrial beams in Voreppe (38) | |
| 2003 | Creation of a production site in Tournefeuille close to Toulouse (31) | |
| 2004 | Creation of a production unit for pre-walls in Courcelles-sur-Seine Creation of the Rector school and training centre in Verberie (60) | |
| 2006 | Takeover of the Société de Préfabrication de l'Ouest (SPO) in Briec-de-l'Odet (29) | |
| 2007 | Inauguration of a new production site in Berre l'Etang (13) | |
| 2008 | Extension of the Ravel (63) site and creation of new production units (pre-walls and pre-slabs) | |
| 2009 | Launch of a production unit for pre-walls in Nantes (44) |
In France, the Rector Lesage Group currently includes 13 plants: Longueil Sainte-Marie (60), Weyersheim (67), Mulhouse (68), Courcelles-sur-Seine (27), Couëron (44), Voreppe (38), Ravel (63), Draguignan (83), Andancette (26), Briec (29)
and the most recent ones, Tournefeuille (31), Contes (06) and Berre l'Etang (13).
Rector also has 7 agencies and depots: Avrainville (91), Hagondange (57), Mérignac (33) and Brive-la-Gaillarde (19), Ludres (54), Saint Thibery (34) and Toulon (83).
| 1996 | Takeover of the Koraton company in Courtrai in Belgium | |
| 2003 | Creation of the RECTOR Polska sales subsidiary in Zawiercie in Poland | |
| 2008 | Creation a production site at Chzranow, in south of Poland (Silesia) near Cracow. |
Abroad, besides the production unit of RECTOR Benelux Koraton at Courtrai (B) and the latest plant of RECTOR Polska at Chzranow (PL), there is also a licensee, CZ NORD, in the Czech Republic.
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