RPM Expands Building Envelope Portfolio with Kalzip Acquisition

The deal aims to boost RPM's global reach and shift toward higher-margin, engineered construction systems.

Apr. 2, 2026 at 5:22pm

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RPM International has expanded its building envelope portfolio with the acquisition of Kalzip, a global leader in aluminum roofing and façade systems. The move is expected to complement Tremco CPG's existing waterproofing and structural offerings, while also supporting RPM's strategic push toward international expansion and participation in more resilient construction sectors.

Why it matters

The Kalzip acquisition comes at a pivotal time for RPM's Construction Products Group, which recently delivered record sales but saw a decline in EBIT margins. The integration of Kalzip is expected to support long-term margin improvement by shifting the portfolio toward higher-value, engineered systems that are less exposed to volatility in traditional construction and restoration markets.

The details

Kalzip, known for its work on landmark infrastructure projects like the Estadio Santiago Bernabéu and LAX Train Station, will contribute high-performance, design-oriented exterior solutions to RPM's building envelope offerings. The deal is seen as a strategic building block rather than an immediate step change, enhancing RPM's portfolio depth, expanding its international reach, and reinforcing its shift toward higher-margin, system-based construction solutions.

  • RPM recently delivered record sales of $737.4 million in its Construction Products Group.
  • EBIT margins in the Construction Products Group declined 200 basis points to 13.4% due to temporary inefficiencies from plant consolidations and project delays.

The players

RPM International

A multinational corporation that manufactures and sells specialty coatings, sealants, and building materials.

Kalzip

A global leader in aluminum roofing and façade systems, with a dominant footprint across Europe and an impressive track record of landmark infrastructure projects.

Tremco CPG

A subsidiary of RPM that provides waterproofing and structural offerings within the building envelope portfolio.

PPG

A key competitor of RPM with a strong global footprint across architectural and industrial coatings.

Sherwin-Williams

A dominant player in architectural coatings, supported by its extensive distribution network and strong brand equity.

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What’s next

The integration of Kalzip is expected to support RPM's long-term margin improvement by shifting the portfolio toward higher-value, engineered systems.

The takeaway

The Kalzip acquisition is a strategic move by RPM to enhance its building envelope portfolio, expand its global reach, and shift toward higher-margin, engineered construction solutions that are less exposed to volatility in traditional markets. This deal aligns with RPM's broader efforts to differentiate itself through a diversified portfolio of specialty coatings, sealants, and building materials.