Where Aesthetics Meet Efficiency

Sto delivers EIFS systems like StoTherm ci, which pair continuous insulation, air and moisture barriers, and drainage — all topped with a diverse array of finish options. These finishes mimic natural materials (brick, wood, stone) using lightweight, easy-to-install textures like StoCast and StoSignature.


Technology & Core Components

  • StoGuard® Barrier Systems: Offers multiple air- and water-resistive options, including vapor-permeable coatings like Sto Gold Coat®, Sto AirSeal®, and the vapor-retarding StoGuard VaporSeal®, tailored to enhance moisture control.
  • Adhesives & Base Coats: Includes products like Sto BTS® Plus, StoPrimer/Adhesive‑B, and Sto BTS® Xtra—all designed to ensure consistent basecoat thickness, high recycled content, and simple application.
  • Reinforcement Mesh & Impact Resistance: Sto mesh options—from standard to ultra‑high impact—embedded in the basecoat improve crack resistance and meet stringent ASTM E2458 impact ratings. Integrated Sto Mesh Corner Beads ensure crisp corners.
  • Insulation Options: EPS boards satisfying ASTM standards, including the Sto Pro‑D foam board with built-in V-groove drainage channels, deliver consistent R-value (approx. R‑3.7 per inch) and enhanced moisture management.

Specialized System Variants

  • StoTherm® ci Mineral: A fire-resistant variant utilizing noncombustible insulation to add durability and air/weather tightness—ideal for code-critical environments.
  • StoTherm® ci MVES: Designed for architectural expression, this system supports adhered masonry veneers such as thin brick, natural stone, or ceramics, layered over continuous insulation.

Finishes, Aesthetic Options & Customization

Sto offers a stunning variety of finish layers to suit any aesthetic direction:

  • Standard Finishes include:
    • Stolit® (textured, nature-inspired)
    • Stolit® Milano (ultra-smooth or stippled textures)
    • Lotusan® (self-cleaning lotus-effect coatings)
    • Stolit® X, Stolit® MAX, Sto Element™, and silicone-rich Sto Powerflex® Silco / Lotusan®options — all in diverse texture and color finishes.
  • StoSignature® allows near-infinite creativity with custom blended colors, textures, and effects tailored to your vision.

Performance Features & Installation Highlights

  • Design Flexibility: Sto systems adapt to substrates like steel, wood, and concrete, with adaptable detailing for transitions, joints, and penetrations.
  • Durability: StoTherm® ci offers wind load resilience (L/240), compatibility with HVAC openings and terminations, and storage regulations to maintain insulation effectiveness.

Maintenance & Refurbishment: Finishes are easy to refresh—StoCoat® Lotusan® makes maintenance straightforward while retaining aesthetic integrity.