SecilTek Isovit Lime is a breathable adhesive and basecoat mortar, formulated with Natural Hydraulic Lime (NHL) for use in external wall insulation (EWI) systems and on traditional masonry facades. It is specifically designed to bond and base coat cork boards, mineral insulation boards, and other vapour-open systems, providing strong adhesion, high breathability, and long-term durability.
As a lime-based alternative to synthetic adhesives, Isovit Lime supports natural moisture movement, prevents trapped condensation, and is ideal for heritage buildings, solid wall retrofits, and any project requiring compatibility with breathable, natural materials.
Key Benefits
✅ Natural Hydraulic Lime Binder – Formuled with Natural Hydraulic Lime it is ideal for breathable construction.
✅ Breathable & Vapour Open – Promotes moisture regulation and reduces condensation risk.
✅ Dual Function – Acts as both an adhesive for insulation boards and as a reinforcing base coat before rendering.
✅ High Adhesion Strength – Provides strong, flexible bonding to a wide range of mineral and natural substrates.
✅ Crack-Resistant & Durable – Accommodates slight building movement without delamination.
✅ Eco-Friendly & Compatible with Heritage Substrates – Suitable for restoration and conservation projects.
Applications
🔹 Adhesive for Natural Insulation Boards – Bonds Cork boards, mineral wool, and other insulation boards to masonry.
🔹 Basecoat in EWI Systems – Used beneath breathable lime or silicate topcoat renders.
🔹 Suitable for Solid Wall & Traditional Masonry – Ideal for stone, brick, and earth construction.
🔹 Retrofit & Heritage Projects – Recommended for breathable upgrades where cement-based systems are inappropriate.
Technical Features
- Binder: Natural Hydraulic Lime (NHL)
- Form: Pre-mixed dry powder – add clean water on site
- Vapour Permeability: High – maintains breathability of insulation and wall structure
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Application Thickness:
- As adhesive: approx. 5–10 mm
- As base coat: approx. 6mm + embedded mesh
- Substrate Compatibility: Masonry, lime plaster, wood fibre insulation, cork boards, mineral boards
- Packaging: 25 kg bags
- Coverage: Approx 4m2 as an adhesive and 3m2 @ 6mm as a base coat.
- Finish Compatibility: Suitable for lime renders, mineral paints, and silicate coatings
Why Choose SecilTek Isovit Lime?
SecilTek Isovit Lime is the natural, breathable solution for securing and finishing external wall insulation systems in eco-builds, restorations, and conservation settings. Its NHL-based formulation ensures maximum compatibility with natural materials, while delivering strong adhesion, vapour permeability, and long-term performance.
