Sika Rendermix Red 5L

Product Size: 5 Litres
Boxed Weight: 5.3 kg
Color: Red
Product Code: Sika Rendermix

Product Overview

Sika Rendermix Red is a high-performance, water-resisting plasticiser designed to enhance the workability, durability, and water resistance of cement-based renders and screeds. Suitable for use in traditional sand/cement mixtures, it provides improved cohesion and ease of application while reducing the risk of cracking or shrinkage in the finished surface.

This advanced formulation is ideal for interior and exterior rendering applications and is especially useful in damp-prone areas or external walls. In addition to render and screed enhancement, Sika Rendermix can be used to improve the application and finish quality of pebble dashing and roughcast renders.

Key Features and Benefits

• Water-Resisting Additive: Significantly improves the water resistance of cementitious mortars and renders.
• Plasticising Action: Enhances workability, flow, and ease of trowelling for smoother finishes.
• Crack Reduction: Minimises shrinkage and cracking by reducing water demand and improving cohesion.
• Multi-Functional Use: Suitable for traditional renders, screeds, pebble dashing, and roughcast finishes.
• Improved Weather Resistance: Increases resistance to rain penetration and moisture ingress.
• Ready to Use: Convenient liquid formulation, mixes easily into mortars.
• Cost-Effective: Replaces the need for lime in mortar mixes, offering a modern alternative with improved performance.

Applications

Sika Rendermix Red is ideally suited for:

• External cement rendering of walls and facades.
• Internal render applications where additional water resistance is beneficial.
• Floor screeds in damp or semi-wet environments.
• Pebble dashing and roughcast render systems.
• Traditional sand/cement mortars requiring improved workability and reduced cracking.

Technical Specifications

Directions for Use

• Preparation:
  • Ensure all tools, mixers, and materials are clean and free from contaminants.
  • Follow standard preparation guidelines for sand/cement render or screed.
• Mixing:
  • Add 100–150 ml of Sika Rendermix Red per 25 kg of cement (depending on the required plasticising effect).
  • Mix the additive into the gauging water first, then introduce to the dry mix.
  • Ensure thorough blending to achieve a uniform consistency.
• Application:
  • Apply the render or screed in the usual manner using a trowel or float.
  • Use in accordance with local building regulations and standard practices.
• Curing:
  • Protect the finished render from rapid drying or frost.
  • Cure as necessary depending on environmental conditions and surface requirements.

Health & Safety

• Use appropriate PPE (gloves, eye protection) during handling and application.
• Avoid contact with skin and eyes. In case of contact, rinse thoroughly with clean water.
• Do not ingest. Keep out of reach of children.
• Consult the Safety Data Sheet (SDS) for full health, safety, and environmental guidelines.

Frequently Asked Questions (FAQ)

Q1: Can Sika Rendermix Red be used in waterproof render applications?

A: Yes. It improves the water resistance of cement-based renders but is not a substitute for a dedicated waterproofing system in high-pressure or submerged environments.

Q2: Is Sika Rendermix Red compatible with all cement types?

A: It is compatible with most Portland cement types. Avoid using with high-alumina cement unless approved by Sika technical services.

Q3: Can this product replace lime in a mortar mix?

A: Yes. Sika Rendermix Red provides similar plasticising benefits as lime, improving workability while also adding water resistance.

Q4: What color does the finished render appear?

A: Although the product is red in liquid form, it typically does not affect the final color of cementitious finishes when used at the recommended dosage.

Q5: Is it suitable for internal applications?

A: Yes, it is suitable for both internal and external rendering and screeding applications.

Q6: How long does it take to dry or cure?

A: Drying times will vary depending on the render thickness, ambient temperature, and humidity. Standard curing practices should be followed.

Why Choose Sika Rendermix Red?

Trusted by professionals and DIY enthusiasts alike, Sika Rendermix Red offers enhanced performance for traditional render and screed jobs. Whether you're improving the adhesion and finish of a decorative roughcast or need superior water resistance in a cement render, Sika Rendermix ensures a smoother, longer-lasting, and more resilient result. It combines the reliability of Sika technology with ease of use and cost efficiency—making it an indispensable choice on site.