Prospectus Supplement



PUBLICATION OF PROSPECTUS SUPPLEMENT

Compagnie de Saint-Gobain, société anonyme with registered office at Les Miroirs, 18, avenue d'Alsace, 92400 Courbevoie, France (the Issuer).

The following prospectus supplement has been approved by the United Kingdom Listing Authority (the UKLA) and is available for viewing:

Prospectus supplement n° 2 (the Prospectus Supplement) dated 2 March 2015, supplementing the base prospectus dated 17 July 2014 for the Issuer's EUR15,000,000,000 medium term note programme.

A copy of the Prospectus Supplement has been submitted to the National Storage Mechanism and is available for inspection at: www.Hemscott.com/nsm.do.

To view the full document, please paste the following URL into the address bar of your browser:

http://www.rns-pdf.londonstockexchange.com/rns/5252G_-2015-3-4.pdf

For further information, please contact:

Gaetano Terrasini

Head of Investor Relations

Compagnie de Saint-Gobain

Tel. + 33 1 47 62 32 52

DISCLAIMER - INTENDED ADDRESSEES

Please note that the information contained in the Prospectus Supplement may be addressed to and/or targeted at persons who are particular types of investors and residents of particular countries only and is not intended for use and should not be relied upon by any person outside these countries and/or to whom the offer contained in the Prospectus Supplement is not addressed. Prior to relying on the information contained in the Prospectus Supplement you must ascertain from the Prospectus Supplement whether or not you are part of the intended addressees of the information contained therein.

Your right to access this service is conditional upon complying with the above requirement.