Sika 406 Stabilising Solution 5L Surface Primer and Sealer for Powdery and Porous Substrates

Product Name: Sika 406 Stabilising Solution
Size: 5 Litres
Boxed Weight: 5.2 kg
Appearance: Clear liquid (dries clear)
Type: Water-based surface primer and sealer
Manufacturer: Sika

Product Overview

Sika 406 Stabilising Solution is a ready-to-use, high-performance primer and sealer designed to stabilise and bind weak, porous, or chalky surfaces prior to painting or finishing. With its fast-drying, clear-formulation, and versatile compatibility, it provides a reliable base that enhances adhesion and ensures long-lasting results on a variety of substrates.

Ideal for both interior and exterior use, this solution is particularly effective over surfaces like plaster, rendering, stucco, pebbledash, blockwork, brickwork, and previously painted areas that may be powdery, dusty, or prone to flaking.

Key Features and Benefits

• Dries Clear Maintains the natural appearance of surfaces where needed.

• Stabilises Weak Surfaces Binds dusty or porous materials for improved topcoat adhesion.

• Versatile Use Compatible with a wide range of substrates including painted and unpainted surfaces.

• Interior & Exterior Suitable for use indoors and outdoors.

• Fast Drying Surface ready for overcoating in 24 hours under normal conditions.

• Easy to Apply Brush or roller application with minimal preparation.

Suitable Substrates

• New or old plaster and render

• Pebbledash and roughcast

• Stucco

• Previously painted surfaces

• Brickwork and blockwork

• Drywall and cement-based surfaces

• Porous concrete or masonry

Technical Specifications

Attribute Details Product Name Sika 406 Stabilising Solution Volume 5 Litres Boxed Weight 5.2 kg Appearance Clear liquid (dries colourless) Application Method Brush or roller Drying Time 24 hours (dependent on temperature and humidity) Coverage ~46 m per litre depending on surface porosity Shelf Life 12 months unopened in original container Storage Conditions Cool, dry, frost-free environment Tools Clean-Up Water, immediately after use

Application Instructions

1. Surface Preparation:

   • Remove any loose, flaking material using a wire brush or scraper.

   • Ensure surfaces are clean, dry, and free of oil, dust, or contaminants.

   • Repair major cracks or holes before application.

2. Application:

   • Stir product well before use.

   • Apply generously and evenly using a brush or roller.

   • Do not apply in wet conditions or if rain is expected before drying.

3. Drying Time:

   • Allow 24 hours drying time depending on conditions before overcoating with paint or finish.

   • In cold or damp weather, drying may take longer.

Health & Safety

• Always wear protective gloves and goggles during application.

• Work in well-ventilated areas.

• Keep out of reach of children.

• Clean tools with water immediately after use.

• Do not dispose of product in watercourses or drains.

Refer to the products Safety Data Sheet (SDS) for full handling and safety information.

Frequently Asked Questions (FAQ)

Q1: Can I paint directly over Sika 406 Stabilising Solution?

A: Yes. Once dry (after approximately 24 hours), it forms a stable base for most water-based and solvent-based paints.

Q2: Will it alter the appearance of the surface?

A: No. It dries completely clear, making it suitable where visual changes are not desired.

Q3: Can I use this on newly plastered walls?

A: Yes, it is ideal for new plaster and render to seal and prepare the surface for finishing coats.

Q4: Does this product act as a waterproofer?

A: No. While it helps bind surfaces and offers mild water resistance, it is not a dedicated waterproofing solution. Use appropriate waterproof coatings for water exposure.

Q5: Is this suitable for sealing flaking paint?

A: Yes, it can help stabilise flaking areas, but all loose and unsound material must be removed first for best results.

Q6: Can it be used on interior drywall?

A: Yes, Sika 406 is safe for interior use on plasterboard and drywall, particularly where surfaces are dusty or unevenly absorbent.

Why Choose Sika 406 Stabilising Solution?

Backed by Sikas global reputation for construction chemistry excellence, this professional-grade stabilising solution offers an easy, effective way to prime and seal weak, powdery, or aged surfaces before painting. Whether you’re prepping internal walls for decoration or sealing an exterior render for repainting, Sika 406 Stabilising Solution ensures a stronger bond, improved finish, and longer-lasting results.