PU sealants for expansion joints

On a construction site, a poorly sealed expansion joint is always discovered after the fact — basement leak during first rain, stain spreading on facade after two years, structural crack appearing five years later. Each of these failures costs the builder repeatedly: immediate rework, end-customer lawsuits, reputation lost on next projects.

PU sealant solves where silicone and acrylic fail: structural joints with real movement — bridges, industrial floors with heavy traffic, tall tower facades with daily thermal expansion. Regulatory driver grows: performance standards (NBR 15575 in Brazil, equivalents in other markets), environmental certifications that score durability, and export markets for prefabricated components requiring documented sealing.