EWI 24
EWI 24
excellent adhesion
Excellent Adhesion
highly flex
Highly Flexible
Highly Vapour Permeable
Highly Vapour Permeable
highly polymer
Highly Polymer Modified

EWI-24 Base Coat

The ecorend EWI-24 Base Coat comprises a technologically advanced formulation intended only for use in an ecorend EWI system application. A cement-based, polymer modified base coat offering advanced adhesion, waterproofing, and breathability, the EWI-24 can be used on multiple substrates and can be hand or spray applied.
Coverage
Approx. 1.7kg per mm/per m²
Application Temperature
+3˚C to 25˚C
Humidity
Less than 95%
Ready to Finish
2 to 8 hours @ + 3˚C to 25˚C
Water Demand
Approx. 5 to 5.75 litres per 25kg bag
Unit Size
25kg Bag Waterproof Packaging

Advanced Formulation for Superior Performance

The ecorend EWI-24 Base Coat is a high-performance, high-strength, cement-based base coat formulated exclusively for use within an ecorend external wall insulation (EWI) system. Designed to provide an ultra-reliable bonding layer, it offers exceptional adhesion, breathability, and waterproofing properties, ensuring long-term durability and protection.

With a carefully engineered formulation, the EWI-24 Base Coat is ideal for anyone looking for a high-performance solution to create a strong and stable base for render finishes.

Application Across Multiple Substrates

The EWI-24 Base Coat is engineered for exceptional compatibility with a variety of substrates, providing a reliable and durable bonding layer. Whether applied to masonry, concrete, or insulation boards, its flexible formulation allows for strong adhesion, ensuring long-term stability across different surface types.

Technical Features & Benefits

  • Advanced Polymer Modification – Enhances adhesion and flexibility, reducing the risk of cracking.
  • High Compressive Strength – Ensures a robust, impact-resistant surface.
  • Excellent Workability – Smooth application with a pot life of approximately 90 minutes.
  • Waterproofing Protection – Helps resist water penetration while allowing vapour movement.
  • Breathable Formula – Prevents moisture build-up, reducing the risk of damp-related issues.
  • Frost & Weather Resistant – Engineered for UK climate conditions, providing long-lasting durability.
  • Application Versatility – Can be applied with both traditional hand-applied methods and modern spray techniques for increased efficiency on site.
  • Multiple Substrate Compatibility – Bonds effectively to masonry, concrete, insulation boards, and other standard EWI surfaces.
  • Reinforcement Compatibility – Designed to be used with alkali-resistant fibreglass mesh for additional strength and crack resistance.

Efficient Application for Streamlined Installation

With the ability to be hand or spray applied, the EWI-24 Base Coat provides installers with maximum flexibility. The easy-to-mix formulation ensures smooth application and workability, helping to achieve a uniform and consistent layer that enhances the overall system performance.

For professional applicators, the spray application method significantly reduces labour time, making large-scale projects faster and more efficient without compromising quality.

Complete ecorend EWI System

Designed for seamless integration into ecorend’s full EWI system, the EWI-24 Base Coat plays a vital role in enhancing system strength and durability. It provides a solid foundation for the application of ecorend’s decorative and protective render finishes, ensuring a high-quality, long-lasting finish that withstands the elements.

For best results, always follow ecorend’s recommended preparation and application guidelines to ensure maximum performance and longevity.

Professional/Trade Use

This product is designed and intended for use by professional tradespeople and within commercial construction applications. It is not designed or marketed as a general household consumer product.

Professional and business users must ensure that all residual product and associated packaging are managed responsibly through an appropriately authorised commercial waste or recycling service, in accordance with applicable waste management regulations. Waste arising from professional or commercial use must not be disposed of through domestic household waste streams.

Where the product is purchased or used by a private individual, any residual product or packaging must be disposed of responsibly and in accordance with local authority requirements. Packaging and residual material should not be placed in normal domestic kerbside waste or recycling unless specifically accepted by the relevant local authority. Where required, material should be taken to an authorised waste facility or household waste recycling centre that accepts the relevant waste type.

For further information on responsible disposal, please visit www.ecorend.co.uk/waste

Technical Details

EWI-24 Base Coat 25kg – Technical Details
Coverage Approx. 1.7kg per mm/per m²
Application Temperature +3˚C to 25˚C
Humidity Less than 95%
Ready to Finish 2 to 8 hours @ + 3˚C to 25˚C
Water Demand Approx. 5 to 5.75 litres per 25kg bag
Unit Size 25kg Bag Waterproof Packaging
Pot Life 1 Hour +
Application Tool Stainless Steel Trowel, 6mm Notched Trowel, Sponge Float
Reaction To Fire Class A1
Dry Bulk Density 1250 kg/m3
Compressive Strength CS IV
Water Vapour Permeability µ ≤ 5/20 (BS EN 1745 Table A.12)
Water Absorption W2
Adhesion ≥ 1.0 N/mm2, (FP: A/B)
Thermal Conductivity (λ10, dry) 0.45 W/mK (BS EN 1745 Table A.12, mean value; P = 50%)
Recyclability 100% Fully Recyclable Packaging