Tradilys Protect is a specialist natural hydraulic lime (NHL) dehumidifying render designed for the rehabilitation of damp, salt-contaminated masonry. Formulated without cement, it provides a breathable and sustainable solution for treating walls affected by rising damp, capillary moisture, and salt deposits (chlorides, nitrates, sulphates).
This innovative mortar combines high vapour permeability with low capillary absorption, allowing walls to dry naturally while buffering and controlling damaging salts. By reducing moisture retention, it safeguards against mould, efflorescence, and structural decay, making it especially suited for heritage buildings, renovations, and conservation projects, as well as new eco-conscious construction.
Tradilys Protect is easy to apply by hand or machine, delivering a soft, creamy consistency that simplifies application. Its macroporous, aerated structure ensures optimal salt storage and evaporation without damaging the wall fabric.
Key Benefits
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Cement-Free & Eco-Friendly – formulated from natural hydraulic lime with mineral and pozzolanic fillers.
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Highly Breathable – promotes rapid evaporation of moisture and safe drying of masonry.
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Salt-Buffering Performance – reduces the migration of salts such as nitrates, chlorides, and sulphates.
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Heritage Compatible – compressive strength (CS II) suited to older masonry with lower resistance.
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Easy Application – creamy, workable mortar for manual or mechanical use.
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Versatile Use – suitable for interior and exterior walls, new builds, and restoration.
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Standards Compliant – CE certified to EN 998-1 (R, CS II) and DTU 26.1.
Technical Information
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Application: 2 coats (5mm rough coat + 20–40mm main coat). If the required thickness exceeds 3cm, apply in multiple coats, allowing one day between each layer.
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Mixing Water: 4.7–5.3L per 25kg bag
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Coverage: ~12kg/m² per 10mm of thickness
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Density (wet): 1.5 kg/l | Density (cured): 1.4 kg/l
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Water Vapour Diffusion (µ): < 6
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Compressive Strength: CS II
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Thermal Conductivity: 0.45 W/mK
Why Choose Tradilys Protect?
Unlike conventional renders, Tradilys Protect is specifically engineered to treat damp and salt-laden walls while preserving breathability. By allowing walls to expel moisture safely, it protects the long-term health of the building fabric and creates a drier, healthier indoor environment.
Ideal for heritage restorations, lime-based repairs, and sustainable construction, Tradilys Protect provides a durable, natural, and reversible solution to one of the most common issues in masonry conservation.
