1. ​The consequences of poor installation  practices, and how these relate to the catastrophic failure of External Wall Insulation Systems
Paul Valentine
Technical Excellence Director

2. Introduction
A whistle stop tour of factors impacting on EWIS failure risk
and how they relate to potential failure modes

3. Solid wall systems
These are EWIS that do not form a cavity against the supporting substrate

4. Rail systems
These have rails that form a cavity against the substrate which support the EWIS

5. Characteristics of the substrate supporting structure

6. Characteristics of the insulation
Some properties of insulation that affect performance
and how key factors may typically map to common forms

7. Characteristics of the render system
Important characteristics of the render system that affect performance

8. Applied Actions – The design life environment
Actions to be considered as applied through the design life of the installation

9. Installation environment – temporary actions
Actions to be considered during the construction phase of the project

10. Failure mechanisms – Structural Bond Failure & Fixing Pull Out

11. Failure mechanisms – Structural Pull Through & Thermal Failure

12. Failure mechanisms – Fire

13. Elements of installation
So far we have considered in outline the system types, the characteristics to be considered and the failure mechanisms that can occur. We now set the context of installation.

14. Consequences of poor installation – One

15. Consequences of poor installation – Two

16. Consequences of poor installation – Three

17. Final Words
Invest in quality systems and practices

18. The End !
Questions ?

19. Thank you
Paul Valentine
Technical Excellence Director