Sika SikaMix 25L Mortar Plasticiser Admixture 445917

Sika SikaMix Mortar Plasticiser 25 Litre

MPN: 445917 | Barcode: 5055492700544

This mortar plasticiser is designed to improve the workability, consistency and durability of cement-based mortars used for bricklaying, rendering and pointing. It helps produce a smoother, more workable mix while reducing water demand and improving handling during application.

The liquid admixture improves mortar plasticity and helps reduce shrinkage, cracking, bleeding and segregation. The 25 litre trade size is suited to contractors, builders and masonry users working on repeated or high-volume projects.

Its formulation improves frost resistance and reduces the need for lime, helping create a more consistent mortar mix while reducing the risk of lime bloom and efflorescence.

What This Product Is Used For

This mortar plasticiser is used during the mixing stage to improve the handling and performance of cement-based mortars.

• Improving workability of bricklaying and blockwork mortars.
• Supporting smoother internal and external rendering mixes.
• Pointing and repointing brickwork and masonry joints.
• Reducing water demand while improving mortar consistency.

Key Performance Benefits

• Improves Workability: Produces a smoother, easier-to-apply mortar mix.
• Reduces Water Demand: Helps maintain consistency without making the mix too wet.
• Improves Frost Resistance: Supports better performance in cold weather conditions.
• Replaces Lime: Simplifies mortar preparation and helps reduce the risk of efflorescence.

Why Choose This Plasticiser

This plasticiser is selected where a more workable and consistent mortar mix is required for bricklaying, rendering or pointing. It is suitable for trade users who need reliable mortar performance across repeated batches.

Compared to traditional lime-based mixes, this liquid admixture helps reduce batch variation, improves trowelability and supports better control during application.

How It Fits Into The Job

This product forms part of the mortar mixing process:

• Step 1: Add the plasticiser to the gauging water.
• Step 2: Mix with cement and sand to create a workable mortar.
• Step 3: Apply the mortar for bricklaying, rendering, pointing or repointing.

Quick Use Guide

Add the plasticiser to clean mixing water before combining with cement and sand to ensure even distribution through the mortar mix.

• Dosage: Use approximately 125ml to 250ml per 50kg of cement, depending on the required level of plasticising.
• Mixing: Mix thoroughly to achieve a consistent mortar blend.
• Application: Use the prepared mortar as normal for brickwork, rendering or pointing.
• Storage: Keep the container sealed and store in a suitable dry area when not in use.

Compatible Products

This product is commonly used with a Faithfull Large 40L Builders Bucket for mortar preparation and an Amtech 13mm Tuck Pointing Trowel for pointing and finishing masonry joints.

• Specification

  Weight	25 kg
  Reference Code	SIKAMIXP25
  Size	25 litre
  Manufacturer	Sika
  Type	Liquid Mortar Admixture
  Reference Code sika	445917

• Product FAQs

  Q: What is mortar plasticiser used for?
  A: Mortar plasticiser is used to improve the workability and consistency of cement-based mortars, making them easier to apply for bricklaying, rendering and pointing.
  Q: Does this product replace lime in mortar mixes?
  A: Yes, it replaces the need for lime while improving mortar performance and reducing the risk of efflorescence and inconsistent mixes.
  Q: How much plasticiser should be added to a mix?
  A: Typically 125ml to 250ml per 50kg of cement is recommended, depending on the required level of workability.
  Q: Can this be used for both internal and external work?
  A: Yes, it is suitable for internal and external applications including brickwork, rendering and pointing.
  Q: Does it improve performance in cold weather?
  A: Yes, it enhances frost resistance and helps mortar perform more reliably in colder conditions.
  Q: Who is this product suitable for?
  A: It is suitable for professional contractors, builders and DIY users working with mortar for construction, repair and maintenance tasks.

• Downloads

  Sika Mix SikaMix Plus Mortar Plasticiser Technical Data sheet
  Sika Mix SikaMix Plus Mortar Plasticiser Safety Data Sheet
  Sika Mix SikaMix Plus Mortar Plasticiser Declaration Of Performance 1
  Sika Mix SikaMix Plus Mortar Plasticiser Declaration Of Performance 2