STEICO Special Dry is a high-performance, breathable wood fibre insulation board designed for sarking applications in pitched roofs and external sheathing for timber frame walls. It provides exceptional thermal insulation, moisture management, and windtight protection, making it an ideal choice for energy-efficient and breathable construction. Manufactured from sustainably sourced wood fibres, STEICO Special Dry enhances a building’s performance while maintaining a vapour-open structure, ensuring a healthy and durable building envelope.
Key Benefits:
✅ Superior Thermal Performance – Low thermal conductivity (λ = 0.040 W/mK) improves energy efficiency and reduces heat loss.
✅ Highly Breathable & Vapour Open – μ-value ≤ 3, ensuring moisture regulation and preventing condensation buildup.
✅ Weather-Resistant & Windtight – Can withstand temporary exposure to rain and wind during construction.
✅ Acoustic Insulation – Reduces airborne noise for improved indoor comfort.
✅ Eco-Friendly & Sustainable – Made from natural wood fibres, fully recyclable, and free from harmful additives.
✅ Enhances Summer Overheating Protection – High thermal mass helps regulate indoor temperatures, reducing overheating risks.
✅ Optimised for Timber Frame & Roof Applications – Provides stability, insulation, and additional weatherproofing.
Applications:
🔹 Sarking Board for Roofs – Installed over rafters for additional insulation and wind protection.
🔹 External Sheathing for Timber Frame Walls – Enhances thermal efficiency and airtightness while maintaining breathability.
🔹 Low-Energy & Passive House Construction – Supports high-performance building designs with natural insulation.
🔹 Heritage & Conservation Projects – Ideal for breathable wall and roof upgrades in older buildings.
Technical Features:
- Thermal Conductivity (λ-value): 0.041 W/mK
- Density: >180 kg/m³ – Provides strength and durability while remaining lightweight.
- Vapour Permeability (μ-value): ≤3 – Maintains a breathable wall/roof system.
- Water-Resistant Surface – Protects against rain and wind during installation.
- Available in Various Thicknesses – Customisable for different insulation requirements.
Why Choose STEICO Special Dry?
STEICO Special Dry is a high-performance, breathable, and eco-friendly insulation solution that enhances thermal efficiency, moisture management, and structural durability. Whether used for sarking applications or external timber frame sheathing, it ensures a highly efficient and long-lasting building envelope.
