Product Data Sheet Show all documents

Sika MaxMix® Concentrated Frostproofer and Hardener

Non-corrosive, air entraining frostproofer and accelerator for mortar, render and screeds

Sika MaxMix® Concentrated Frostproofer and Hardener is a highly concentrated, chloride free, air entraining admix which is designed specifically for cold weather working, eliminating the requirement for a second frostproofing admix. It reduces the setting time of sand and cement based mortars, renders, screeds etc and is the ideal choice for a cold weather admix providing frost protection below –4 °C. Being chloride free, it will not attack embedded steel and hence is suitable for use with brick ties etc.

  • Chloride free.
  • Improves frost resistance.
  • Reduces water absorption and penetration.
  • Improves workability and accelerates set.
  • Protects in sub-zero temperatures.
  • Easy to use, controlled dosage system, so no waste or spillages.
  • Powerful formula - 1 L treats up to 100 kg of cement.
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Product Data Sheet Show all documents

Usage

  • Mortars.
  • Floor screeds.
  • External/Internal cement based rendering.
  • Emergency repair plugging aid when mixed neat with cement.
 

Advantages

  • Chloride free.
  • Improves frost resistance.
  • Reduces water absorption and penetration.
  • Improves workability and accelerates set.
  • Protects in sub-zero temperatures.
  • Easy to use, controlled dosage system, so no waste or spillages.
  • Powerful formula - 1 L treats up to 100 kg of cement.

Packaging

1 L dosing bottle

Colour

Yellow / green liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

Certified for CE and UKCA mark under EN934-3.
Product Information

Shelf Life

12 months from date of manufacture in unopened containers.

Storage Conditions

Store in original unopened containers between +5 °C and +25 °C. Do not store above 30 °C.

Density

1.46 - 1.52 g/cm3 at 20 °C

pH-Value

5.5 - 7.5 

Total Chloride Ion Content

<0.1 % w/w

 

Application

Consumption

Recommended Dosage

250 - 500 mL per 25 kg cement.
Application steps

SUBSTRATE PREPARATION

  • All materials used must be free from ice and the temperature of the mix prior to placing must not be less than +4 °C.
 

Documents

FAQ

How does Sika® MaxMix® Concentrated Frostproofer and Hardener help in cold conditions?

It protects mortars against frost damage down to -4 °C and below, ensuring mixes gain strength quickly even in freezing temperatures.

Posted on: 19/09/2025
Is Sika® MaxMix® Concentrated Frostproofer and Hardener safe for use with steel reinforcement or brick ties?

Yes. Its non-corrosive, chloride-free formula makes it safe to use with reinforcement and brick ties.

Posted on: 19/09/2025
Can I add Sika® MaxMix® Concentrated Frostproofer and Hardener directly to the mortar mix?

No. Always dilute it in a portion of the gauging water first, then add to the mix. Never pour directly into dry materials.

Posted on: 19/09/2025
What is Sika® MaxMix® Concentrated Frostproofer and Hardener used for?

It’s a chloride-free, concentrated admixture designed to accelerate the setting and hardening of mortars and renders while also protecting them from frost damage in cold weather.

Posted on: 19/09/2025
What jobs is Sika® MaxMix® Concentrated Frostproofer and Hardener best suited for?

It’s ideal for mortars, floor screeds, external and internal renders, and can also be used as an emergency plugging aid when mixed neat with cement.

Posted on: 19/09/2025
Does Sika® MaxMix® Concentrated Frostproofer and Hardener contain a plasticiser?

Yes. The formula includes a plasticiser which improves mortar workability while reducing the amount of water needed.

Posted on: 19/09/2025