Product Overview
Blue Circle Hydralime Hydrated Lime supplied in a 25kg bag is a high-calcium, fine white powder produced to enhance the workability and durability of mortar, plaster, and render mixes. Manufactured to BS EN 459-1 CL 90-S standards, it provides a consistent and controlled source of hydrated lime for modern and traditional construction applications.
The product improves plasticity, cohesion, and water retention in cementitious materials, ensuring smoother application and stronger, more durable finishes. When mixed with water, Hydralime can also be used to produce lime putty or limewash, extending its versatility for restoration and decorative work.
Its manageable 25kg bag size offers precision, convenience, and reduced waste, making it ideal for smaller or phased construction projects where ease of handling and accurate dosing are essential. Each bag contains 25kg of hydrated lime for reliable, consistent performance.
Features & Benefits
- High-calcium formulation: Provides excellent workability and plasticity in mortars, renders, and plasters.
- Enhanced water retention: Improves curing, minimises shrinkage cracking, and supports uniform drying.
- Improved adhesion: Promotes stronger bonding between mortar and masonry units for lasting strength.
- Certified performance: Conforms to BS EN 459-1 CL 90-S standard with CE marking for assured quality.
- Versatile mixing options: Suitable for use with Tarmac Mastercrete, General Purpose Cement, Snowcrete, Procem, and Sulfacrete.
- Compatible with heritage materials: Allows breathability and flexibility in restoration or conservation work.
- Ease of mixing: Quickly blends with water to produce lime putty or limewash.
- Eco-conscious material: Naturally derived product supporting sustainable building practices.
- 25kg bag supply: Compact and manageable for transport, precise dosing, and reduced storage requirements.
Applications
- Mortar enhancement: Improves workability and strength when used in cement-lime-sand mortars.
- Plaster and render mixes: Produces smoother, more resilient finishes for internal and external applications.
- Masonry construction: Provides a flexible and durable bonding medium for brick and block work.
- Restoration and conservation: Ensures compatibility with traditional materials in heritage repairs.
- Lime putty or limewash production: Can be mixed with water for decorative or specialist uses.
Installation Guidance
- Mixing ratios: Combine with cement and sand in accordance with project specifications or standard mortar mix designs.
- Preparation: Ensure clean mixing equipment and measure materials accurately for consistent results.
- Blending: Dry-mix lime thoroughly with other materials before adding water to ensure uniform dispersion.
- Application: Apply mixed mortar, render, or plaster in normal practice using suitable tools and techniques.
- Curing: Protect freshly applied material from rapid drying, frost, or rain until fully set.
- Storage: Keep bags sealed and stored in a dry, frost-free environment to prevent moisture absorption.
Compliance & Performance
- Material specification: High-calcium hydrated lime produced to BS EN 459-1 CL 90-S standard.
- Performance characteristics: Improves mortar plasticity, adhesion, and resistance to cracking.
- Compatibility: Suitable for use with a wide range of cement types and aggregates.
- Certification: Independently tested and CE marked for compliance with UK and EU standards.
- Shelf life: 12 months in unopened packaging under dry conditions.
- Important note: Do not use as a direct replacement for cement. Always follow manufacturer guidance and site specifications for correct mix proportions.