Who owns Isover?
Isover is owned by Saint-Gobain (France, Euronext Paris: SGO).[1]
This ownership is reported in official statements but has not yet been matched to a regulatory filing.
Evidence: Compagnie de Saint-Gobain — Document d'Enregistrement Universel 2025 (Universal Registration Document), Compagnie de Saint-Gobain / Autorité des marchés financiers (info-financiere.gouv.fr), 11 March 2026. Last checked .
Key facts
- Current owner
- Compagnie de Saint-Gobain reported
- Owner HQ
- 🇫🇷 France, Courbevoie
- Origin
- 🇫🇷 France
- Category
- Home, garden & DIY › Home improvement › Building materials
- Parent ticker
- Euronext Paris: SGO
- Last verified
- · 1 sources
About Isover
Isover is Saint-Gobain's mineral (glass) wool insulation brand, produced through subsidiaries including Saint-Gobain Isover France, which is 99.80% owned, and Saint-Gobain Isover G+H Aktiengesellschaft in Germany, which is 100% owned, according to the group's 2025 Universal Registration Document. It is marketed alongside Placo and the acoustic-ceiling brand Ecophon in interior fit-out systems built with recycled raw materials, and Saint-Gobain runs certified installation-training programmes for Isover products through partner and client academies in several countries.
Ownership timeline of Isover
- Current owner Saint-Gobain [1] reported
Where Isover sits in Saint-Gobain
Controlling ownership as of . Brands grouped under the entity that owns them; large groups are collapsed.
Open the full Saint-Gobain ownership tree →
See the full Saint-Gobain brand portfolio (4) →
Other brands owned by Saint-Gobain
Saint-Gobain controls 4 brands on Brandtree, 4 of them in home, garden & diy.
Also in home, garden & diy
- CertainTeed (1904)
- Placo
- Weber
Other brands in building materials, and who owns them
The 104 brands in building materials on Brandtree belong to 33 owners. The largest is James Hardie, with 8; Saint-Gobain has 4.
| Brand | Owner | Owner based in |
|---|---|---|
| Golden Bay | Fletcher Building | 🇳🇿 New Zealand |
| Artevia | Holcim | 🇨🇭 Switzerland |
| AZEK Exteriors | James Hardie | 🇮🇪 Ireland |
| Blenture | Votorantim Cimentos | 🇧🇷 Brazil |
| Adbri | CRH | 🇮🇪 Ireland |
| Byggmakker | Kesko | 🇫🇮 Finland |
| Cacique Max | Loma Negra | 🇦🇷 Argentina |
| Alutions | Tecnoglass | 🇨🇴 Colombia |
About the owner: Saint-Gobain
Saint-Gobain is a publicly listed company headquartered in Courbevoie, France, founded in 1665. Brandtree records 4 brands under its control, and it is listed as Euronext Paris: SGO.
Compagnie de Saint-Gobain is a French industrial group founded in 1665 by Louis XIV as a royal glassworks manufactory and today one of the world's largest makers of light and sustainable construction materials, organised around interior and exterior building solutions and construction chemistry. Its headquarters, Tour Saint-Gobain, is in Courbevoie in the La Défense business district near Paris, and its shares trade on Euronext Paris.
Saint-Gobain: full profile, brands and acquisition history →
🇫🇷 Isover and other French brands
Brandtree records a controlling owner for 327 brands that began in France. 102 of them (31%) are now controlled by a company headquartered in another country; Isover is not one of them.
Frequently asked questions
Who is the parent company of Isover?
The parent company of Isover is Saint-Gobain, a publicly listed company headquartered in France.
Is Isover French?
Yes. Isover originated in France and its owner, Saint-Gobain, is also headquartered in France.
Is Isover still owned by Saint-Gobain?
Yes. As of 23 September 2026, Isover is still owned by Saint-Gobain. The ownership record was last checked against primary sources on that date.
Sources (1) & corrections
Last verified . Every ownership fact above is backed by one of these primary documents. Numbers in brackets in the text refer to this list.
- [1] Compagnie de Saint-Gobain — Document d'Enregistrement Universel 2025 (Universal Registration Document) — Compagnie de Saint-Gobain / Autorité des marchés financiers (info-financiere.gouv.fr), Annual report, published 11 March 2026; retrieved 23 September 2026.
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