| 1928 | Tremco founded in Cleveland, Ohio by William Treuhaft | |
| 1952 | | Willi & Christiane Illbruck founded a small business for production of steel wool dies in Leverkusen, Germany |
| 1954 | Entered European market with a joint venture in the UK | |
| 1969 | Expansion to France via joint venture | |
| 1979 | Joint venture in the Middle East, sales offices in Bahrain and Saudi Arabia | |
| 1980 | Tremco Inc acquired by BF Goodrich | |
| 1983 | | The second production facility comes into being in Bodenwöhr, Bavaria |
| 1985 | New manufacturing facilities in Wigan, UK | |
| 1986 | Acquired Kamia GmbH, Germany and Tretol Ltd, UK | |
| 1992 | Acquisition of Götakemi AB, Sweden | |
| 1995 | Acquisition of Europox, Finland | |
| 1997 | Tremco was acquired by RPM. Moved to new European HQ and R&D facility in Slough, UK | |
| 1999 | | Complete takeover of Cocon Arkel, Netherlands |
| 2000 | Integration of Nullifire Ltd into Tremco Europe | Acquisition of Perennator brand from Dow Corning |
| 2001 | | Complete takeover of Resatec, France |
| 2002 | | Setting up representative office in Russia. Acquisition of Fastherm, Czech Republic |
| 2003 | Acquisition of Koch Waterproofing Solutions, USA | Acquisition of Colymit, Belgium and Alfas, UK |