What’s the difference between different ETAs? Are all ETAs the same?

At first glance, a European Technical Assessment (ETA) may seem straightforward. It confirms that a product has been assessed and can be used within the European regulatory framework. However, a closer look reveals that not all ETAs provide the same level of information.

These differences have practical consequences. They affect where a product can be used, what forces it can withstand and how reliably it will perform over time. For everyone involved, it is essential to understand what lies behind an ETA.

Each ETA is based on a European Assessment Document (EAD). These documents evolve as testing methods improve and industry knowledge advances. Newer versions of EADs often allow for a broader range of applications, include more detailed performance data, and reflect current technical standards. This gives engineers more verified values to work with and, in many cases, greater flexibility in design. An ETA based on an older EAD may still be valid, but it may not offer the same possibilities.

Equally important is the defined intended use. Each ETA clearly specifies where and how a product can be used, which substates in can be installed into under which loads and in which environmental conditions. This determines whether a product is suitable for a given project or application. A broader scope of use provides greater versatility, while a narrower one can limit options and increase the need for additional verification.

To understand the differences, it is important to first understand how an ETA is developed.

 

ETA - A step-by-step guide:

1.    The EAD
It all starts with a European Assessment Document (EAD). Every ETA is based on an EAD. The EAD describes how the product should be tested, and which properties should be assessed. If no suitable EAD exists for a product or application, a new one can be developed.

2.    EADs evolve over time
It is important to remember than EAD aren’t static, they are constantly changing overt time as testing methods improve and the industry’s technical understanding grows.

3.    Newer EADs often provide more information
More recent EADs, are frequently contain more detailed performance data with broader approved areas of use in line with updated technical standards.

4.    Benefits for engineers and designers
This provides greater benefits for people in the industry as they have more verified values to work with and greater flexibility in design and construction.

5.    Older EADs can still be valid
However, this doesn’t mean that an ETA based on an older EAD is obsolete, it can still be used. However, it may limit application possibilities compared to newer versions.

6.    Next key element: intended use
Each ETA clearly states how and where the product may be used.

7.    An ETA specifies several factors

• Which base materials the product can be used in
• What loads it is designed for
• Which environmental conditions it has been tested for

8.    This determines the application area
For example, whether the product is suitable for façades, infrastructure projects or specific structural systems.

It is important to remember that an ETA applies to a specific product, not to a product category. Differences in design, materials, and surface coatings affect how an ETA performs. These factors determine load capacity, corrosion resistance, durability, and behaviour during installation.

The declared working life is another key element. It is typically defined as 25 or 50 years and refers to the period during which the product is expected to perform as intended, provided it is correctly installed and used. This is directly relevant for long-term applications such as façades, infrastructure, and industrial installations, where durability is critical.

The scope and depth of an ETA are the result of deliberate choices made during the development process. Broader assessments and more comprehensive performance declarations require extensive testing, engineering work, and long-term investment. This effort creates value not only in the document itself but also in the confidence it provides to those who rely on it.

At the same time, an ETA is only one part of compliance. Equally important is the technical expertise behind it, understanding applications, supporting industry professionals in specification work, and ensuring that products are used correctly and in accordance with regulations.

For engineers, this provides reliable design data. For contractors, it ensures smoother installation and inspection. For distributors and OEM manufacturers, it strengthens product credibility and market acceptance.

An ETA is more than a formal requirement. It is a technical foundation that supports safe construction, reliable installation, and long-term performance. The level of confidence it provides depends entirely on the depth behind it.

 

What is the difference between different ETAs? 

Not all ETAs provide the same level of information or the same application possibilities. Each ETA is based on an EAD document that governs how the product is tested and assessed. Newer EAD versions often include more detailed performance data, broader application areas, and updated technical standards, providing greater flexibility in design and construction.

The ETA also defines the intended use: where and how the product may be used, in which materials, under which loads, and in which environments. This determines whether the fastener is suitable for a specific project, for example, façades, infrastructure, or other specific systems.

In addition, an ETA always applies to a specific product not an entire product category. Differences in materials, design, and surface treatment therefore affect performance, durability, and safety.