RPM announces acquisition of Volteco

Acquisition strengthens RPM's portfolio of waterproofing solutions

RPM International Inc. (NYSE: RPM) today announced that a definitive agreement has been signed for the acquisition of Volteco S.p.A. (Volteco), an Italy-based leading supplier of below-grade waterproofing solutions, for its Tremco Construction Products Group (Tremco CPG). This strategic acquisition brings a unique and differentiated technology platform to Tremco CPG.

Headquartered in Ponzano Veneto, Italy, Volteco specializes in advanced waterproofing technology with calendar year 2025 sales of €28 million. The company is recognized for its AmphibiaTM waterproofing sheet membrane. Volteco also produces a line of bagged powder goods for patch and repair applications, alongside flexible liquids, mortars, resins and damp-proofing materials.

Volteco's cutting-edge waterproofing solutions have been pivotal in numerous high-profile projects, including the protection of historical landmarks in Venice and the construction of modern facilities like the Santa Giulia Ice Hockey Arena in Milan, a key facility for the Milan Cortina 2026 Winter Olympic Games.

Other notable applications include waterproofing for the strategic public work of an underground tunnel connecting the Abruzzo Regional Citadel to the L’Aquila bus terminal, a hub for intercity connections to over 22 cities in Italy, including Naples and Rome and ensuring the structural integrity of Y-40, the world’s deepest thermal pool.

The transaction is expected to close in the second quarter of fiscal 2027, subject to customary closing conditions.

"Volteco is an excellent complement to the product lines of our Tremco Construction Products Group," stated Frank Sullivan, RPM chairman and CEO. "This acquisition provides Tremco CPG with new technologies that can be leveraged through its global sales force to drive growth and enhance its 'Power of One' value proposition for customers."

About Tremco Construction Products Group

Tremco Construction Products Group (Tremco CPG), part of the RPM International Inc. portfolio, unites industry-leading building envelope solutions manufacturers and trusted brands, including Tremco, Nudura, Dryvit, Willseal, Flowcrete, Nullifire and Vandex, to deliver comprehensive, integrated construction systems. With operations spanning North America, Europe, Asia-Pacific, India and Latin America, Tremco CPG has a global presence supported by regional businesses and distributors who understand local market needs. Tremco CPG solutions ensure long-lasting performance for commercial, industrial and residential projects worldwide, while international teams collaborate on training, testing and innovation to build high-performing structures in any geography or climate.

About RPM

RPM International Inc. owns subsidiaries that are world leaders in specialty coatings, sealants, building materials and related services. The company operates across three reportable segments: consumer, construction products and performance coatings. RPM has a diverse portfolio of market-leading brands, including Rust-Oleum, DAP, Zinsser, Varathane, The Pink Stuff, Stonhard, Carboline, Finish Works, Tremco, Euclid Chemical, Dryvit and Nudura. From homes and workplaces to infrastructure and precious landmarks, RPM’s brands are trusted by consumers and professionals alike to help build a better world. The company employs approximately 17,500 individuals worldwide. Visit www.RPMinc.com to learn more.

For more information, contact Matt Schlarb, vice president – investor relations & sustainability, at 330-220-6064 or mschlarb@rpminc.com.