Secil Natural Hydraulic Lime NHL 3.5

Secil Natural Hydraulic Lime is a high-quality NHL 3.5 manufactured from 100% burnt limestone, with nothing added to the raw material. Produced by Secil Martingança SA, a well-established European lime manufacturer, it offers consistent grading and reliable performance for traditional and conservation projects.

Ideal for stone masonry application, a general-purpose NHL, combining both aerial and hydraulic setting and hardening in a single additive-free formulation.

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Description
Product Documentation

Description

Product features

Good workability

Physical and chemical compatibility with old substrates

Highly Water vapour permeable

Slow development of mechanical strength

Absorbs CO₂, 100% natural and free of additives

More about Natural Hydraulic Lime NHL 3.5

✔ Compressive strength between 3.5 and 5 MPa, making it suitable for brickwork, pointing, and lime plastering and rendering.

✔ High breathability, preventing moisture build-up and potential structural issues.

✔ Slower setting time compared to NHL 5 (due to its higher free lime content), allowing for better workability in restoration and traditional building techniques.

✔ Compatible with historic materials, ideal for heritage conservation projects.