Sika SikaMix Frostproofer & Hardener 5L 878091

Sika SikaMix Frostproofer and Hardener 5 Litre

MPN: 878091 | Barcode: 5029347002350

This frostproofer and hardener is a liquid admixture designed to accelerate setting and improve frost resistance in mortar, render, screeds and non-structural concrete. It is used during mixing to reduce delays caused by cold weather and to help maintain consistent performance in low temperatures.

The chloride-free formulation allows safe use where steel reinforcement is present while improving early strength development and reducing setting time. It provides protection in wet mortar down to -8°C when used at the correct dosage, making it suitable for professional contractors and trade users working in cold weather conditions.

What This Product Is Used For

This admixture is added during mixing to improve performance and reliability in cold-weather construction work.

• Bricklaying and blockwork in low temperature conditions.
• Rendering and screeds requiring faster setting times.
• Pointing and patch repairs where reduced waiting time is required.
• Non-structural concrete work in cold weather environments.

Key Performance Benefits

• Accelerates Setting Time: Reduces delays and improves productivity.
• Frost Protection: Protects wet mortar down to -8°C when dosed correctly.
• Chloride-Free Formula: Safe for use with steel reinforcement.
• Improves Early Strength: Supports faster finishing and reduced waiting times.

Why Choose This Admixture

This product is selected when working in cold conditions where standard mortar or concrete mixes would set slowly or risk frost damage. It allows work to continue in lower temperatures while maintaining control over setting and curing performance.

Compared to standard mixes without additives, this admixture improves consistency, reduces downtime and helps ensure reliable results during winter construction and repair work.

How It Fits Into The Job

This product forms part of the mixing stage in masonry and concrete work:

• Step 1: Measure the required dosage based on temperature and cement content.
• Step 2: Add to the gauging water and mix thoroughly with cement and aggregates.
• Step 3: Apply and finish as normal, ensuring correct protection during curing.

Quick Use Guide

Add the admixture to the mixing water before combining with cement to ensure even distribution throughout the mix.

• Dosage: 2.5L per 50kg cement for -4°C, 5L per 50kg for -8°C protection.
• Mixing: Mix thoroughly to ensure consistent performance.
• Application: Apply using standard masonry tools.
• Protection: Protect freshly placed material from severe exposure during curing.

Compatible Products

This product is commonly used with a 40L builders mixing bucket for preparing mortar mixes and a Blue Spot Tools Soft Grip Brick Trowel 280mm for applying and finishing mortar during construction and repair work.

• Specification

  Weight	5 kg
  Brand	SikaMix
  Manufacturer	Sika
  Type	Cement Hardener Accelerator Frostproofer Admixture
  Size	5 litre
  MPN	878091

• Product FAQs

  Q: What is a frostproofer and hardener used for?
  A: It is used to accelerate setting and improve frost resistance in mortar, render and concrete when working in cold weather conditions.
  Q: How does this product protect against frost?
  A: It reduces the risk of freezing in wet mortar and allows work to continue in temperatures down to -8°C when used at the correct dosage.
  Q: When should this admixture be added to the mix?
  A: It should be added to the gauging water before mixing with cement and aggregates to ensure even distribution throughout the mix.
  Q: Can this be used with reinforced concrete?
  A: Yes, the chloride-free formulation makes it safe for use where steel reinforcement is present.
  Q: Does it affect the strength of the mortar?
  A: It improves early strength development and helps the mortar set more quickly, especially in colder conditions.
  Q: Who is this product best suited for?
  A: It is suitable for professional contractors and builders working on bricklaying, rendering or repair work in cold weather environments.

• Downloads

  Sika SikaMix Frostproofer and Hardener Safety Data Sheet
  Sika SikaMix Frostproofer and Hardener Technical Data Sheet