Sika external wall insulation (EWI) systems combine high performance insulation with durable render finishes to create energy efficient and attractive façades. Suitable for both new build and refurbishment projects, EWI systems help to reduce heat loss, lower energy bills and eliminate condensation by keeping the building fabric warm and dry. These systems not only improve thermal performance but also enhance aesthetic appeal, extend the lifespan of properties and support sustainable construction.

Combination of Sika Logo and Logo of Tradecraft Building Procucts Ltd.

Tradecraft is the official distributor of Parexlanko products for Sika in the Republic of Ireland and Northern Ireland.

Advantages of Sika's External Wall Insulation (EWI) Systems

Benefits for refurbishment projects

  • Improves thermal performance and energy efficiency
  • Reduces utility bills
  • Quick and easy to install
  • Minimal disruption to occupants during installation
  • Wide choice of colours and finishes to enhance facade design
  • Original appearance of the building can be maintained
  • No internal living space is lost
  • Can increase property value and aesthetic appeal
  • Can extend the useable life of a building
  • Reduces condensation and helps prevent damp or mould growth

Benefits for new builds

  • Creates simplicity in design
  • Provides a cost effective, fast-track solution for external façades
  • Meets the requirements of Building Regulations Part L for improving thermal performance
  • Conserves energy, minimises heat loss and reduces carbon footprint
  • Contributes to sustainability standards
  • Creates durable, weather resistant façades
  • Enhances occupant comfort by keeping interiors warmer in winter and cooler in summer
  • Improves acoustic performance by reducing external noise

Wondering which external insulation system is ideal for your façade project?

Get an easy-to-understand first impression of which options are right for you here.

External wall insulation system build-up with dash finish

Components of an EWI System

Finishing layers

Sika external wall insulation systems are made up of high-quality products that are designed to work seamlessly together. They are typically comprised of:

  1. Adhesive
  2. Thermal insulation board
  3. Mechanical fixing devices
  4. Base coat 
  5. Reinforcement
  6. Finishing layers