Approved Substrates for U-STUCCO™ Application

U-STUCCO™ is the only advanced stucco system engineered for ICF and ICCF construction, converting EPS-based walls into fire-rated, energy-efficient, and moisture-protected assemblies. With direct adhesion to foam, single-pass application up to 1 inch, and an added R-value of 2.2 per inch, it enhances safety, thermal performance, and durability. Ideal for residential, commercial, and industrial projects,

U-STUCCO™ helps ICF/ICCF structures meet NFPA and ASTM standards while qualifying for LEED credits.

U-STUCCO™ is an ideal finish for AAC and CMU blocks, enhancing their inherent strength and insulation with unmatched fire, water, and crack resistance. Its lightweight formula bonds directly without complex prep, applies up to 1” in a single coat, and provides added R-value for energy efficiency. Hydrophobic yet breathable,

U-STUCCO™ protects AAC and CMU walls from moisture intrusion, mold, and efflorescence while improving sound dampening and durability. This combination makes it the perfect solution for long-lasting, high-performance masonry construction.

U-STUCCO™ is the perfect complement to MgO panels, combining their non-combustible, mold-resistant properties with superior fireproofing, water resistance, and added insulation. Its lightweight, fiber-reinforced formula bonds directly to MgO without primers, applies up to 1” in a single coat, and enhances both thermal and acoustic performance. With hydrophobic yet breathable protection,

U-STUCCO™ prevents trapped moisture and cracking, making MgO assemblies stronger, more durable, and code-compliant for high-performance construction.

U-STUCCO™ is a game-changing solution for 3D printed concrete, designed to overcome the unique challenges of layered construction. Its ability to be applied up to 1” thick in a single pass makes it the perfect stucco for smoothing and leveling uneven surfaces common in 3D printed walls. Beyond surface correction,

U-STUCCO™ adds continuous thermal insulation (R-2.2 per inch), greatly improving energy efficiency in modern structures. It also doubles as an interior plaster, delivering a smooth, durable finish while providing superior water, mold, and mildew resistance.