Last edited 05 Dec 2018

BREEAM Life cycle impacts


[edit] Aim and benefits

The Mat 01 Life cycle impacts credits allow to understand, consider and reduce the environmental impacts of the projects from the construction materials used. When taken in the early phase of the design, this can help identify material quantity savings or material type changes, or when done later on, it can help identify best performing materials from environmental point of view.

[edit] When to consider

While the highest benefits are always coming in the very early design, most BREEAM schemes require this credit to be tackled in the design phase. The exception is the BREEAM UK NC 2018, which requires this credit to be addressed before applying for planning permission.

This credit can also be achieved with automated integrations with such energy modelling tools as IES Virtual Environment as well as DesignBuilder, and by automating the analysis using Revit models.

[edit] Step by step guidance

Tackling this credit requires following a number of steps which vary by the applicable BREEAM scheme. Some software tools include scheme-specific workflows to support this credit. For example, One Click LCA includes specific workflows for BREEAM UK NC 2018 (benchmarks and optioneering) as well as BREEAM International, BREEAM SE, BREEAM NOR, BREEAM ES and BREEAM DE (for the new construction and renovation versions).

[edit] Questions to ask while seeking compliance

The key is using a compliant software tool. BRE pre-approves the software that can be used for this credit. It cannot be documented without an approved software solution.

Compliant software tools are documented by BRE in the so-called Mat 01 calculator which is available in the BRE Extranet. However, for BREEAM UK schemes the approved software are listed here:

One part of the BREEAM UK compliance requires using IMPACt-compliant software. The IMPACT-compliant software can be found here:

For BREEAM NOR, the Mat 01 credit includes both use of an LCA software, as well as greenhouse gas accounting using the Norwegian national standard NS 3720.

For BREEAM NL, the Dutch regulatory method is applied and software complying with that can be found here:

In terms of software instruments, One Click LCA is approved for every BREEAM scheme as an LCA software, and allows targeting every credit for the Mat 01 LCA as well as associated EPD credit(s). It has several specific modules, including specific tools for IMPACT-compliant (BREEAM UK), Non-IMPACT compliant tool (BREEAM UK), BREEAM International/NOR/ES/SE/DE tool, and specific tool for BREEAM NL and a specific tool for BREEAM NOR’s national greenhouse gas accounting method.

[edit] Tools and resources

The highest rated LCA tool for BREEAM is One Click LCA, which has received a Mat 01 100% rating and allows users to calculate Life Cycle Impacts credits fast and easily.

[edit] Tips and best practice

Addressing the credit early on, and using automation to speed up this credit analysis are very important productivity factors.

[edit] Typical evidence

The evidence is generated by the LCA software. It takes the form of Excel spreadsheets, whose content varies by the BREEAM scheme.

[edit] Applicable Schemes

The guidelines collated in this ISD aim to support sustainable best practice in the topic described. This issue may apply in multiple BREEAM schemes covering different stages in the life of a building, different building types and different year versions. Some content may be generic but scheme nuances should also be taken into account. Refer to the comments below and related articles to this one to understand these nuances. See this document for further guidelines.

  • List applicable schemes here

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