New Construction / UK / 2014 / 06-Materials /

Mat 03 – Responsible Sourcing of Materials

Information correct as of 26thOctober 2021. Please see kb.breeam.com for the latest compliance information.

Assessing furniture - KBCN00019

Fixed furniture within the building should be assessed. Examples of this include: built-in desks, kitchen units, toilet cubicles, any use which constitutes a significant fitting. Movable furniture which is not fixed to the building should be excluded from the assessment.  

BS 8903:2010 superseded - KBCN0938

BS 8903:2010 Principles and Framework for Procuring Sustainably - Guide, has been superseded by BS ISO 20400:2017 Sustainable Procurement - Guidance.
This change will be updated in future re-issues of the manual.

Cut-off - KBCN0598

The current CN 'Route 1 Cut- off See step 1 in the Methodology section' in the technical manual should refer to Route 2 and 3 as well.
14.11.2016 Compliance Notes in technical manual to be updated accordingly in next reissue.
03.11.2021 Issue 2.0 of the UK RFO technical manual corrected.

Drop-down menus in the tool - KBCN0789

When using the Mat 03 calculator tool, some of the entry fields are no longer restricted to drop-down menus but allow free-text entry.  This provides greater flexibility of use for the tool making allowance for updates to Guidance Note GN18. If a responsible sourcing scheme is not in the drop-down menu, assessors should check Guidance Note GN18 for the scheme and manually enter the name of the recognised scheme and its point score.

FSC Controlled Wood - KBCN00054

FSC Controlled Wood is a system developed to ensure that the non-certified portion in products labelled as Mixed Sources do not come from unwanted sources. It is not an FSC certification on its own and products classed as FSC Controlled Wood do not meet the BREEAM definition of responsibly sourced.  

GN18 BREEAM Recognised Responsible Sourcing Certification Schemes and BREEAM Scheme Applicability - KBCN0723

BREEAM awards credits for responsibly sourcing construction products (typically under the Mat 03 issue) to encourage responsible product specification and procurement in construction. To achieve these credits, applicable specified products (as listed in the relevant technical manual) must be covered by Environmental Management System (EMS) or a responsible sourcing certification scheme (RSCS) recognised by BREEAM. View V3.5 of full guidance note (current version) View V2.0 of full guidance note (licensed assessors only - optional for projects registered prior to release of V3.0 in September 2016) View all Guidance Notes (licensed assessors only)

GN24 Demonstrating Compliance with BREEAM Issue Mat 03 - KBCN0721

The purpose of this Guidance Note is to provide additional guidance to assessors and specifiers on demonstrating compliance with the criteria set out in Mat 03. It should be read in conjunction with the Technical Manual for the relevant assessment scheme. The following is covered: — Definition of terms used — How to deal with constituent products/materials including those with certification that is different from the overall product — The precision required in estimating quantities: — For the cut-off volume — Of products/materials in the building (route 2 only) — Of different material categories in products/materials. — An example route 2 calculation — ‘Broken chain’ situations — How to treat building services View full Guidance Note (licensed assessors only) View all Guidance Notes (licensed assessors only)

Legally harvested and traded timber – Examples - KBCN0956

The following examples are considered compliant for BREEAM purposes. Legally harvested:
  1. Evidence of compliance with the CPET (see here, timber bought inside the UK only)
  2. FSC, PEFC or SFI certification
  3. Evidence of compliance with the EUTR (timber bought inside the EU only)
  4. Risk assessment/due diligence documentation demonstrating a low risk of non-compliance with the ‘legally harvested’ requirements given in the manual.
Legally traded:
  1. Evidence of compliance with the CPET (see here, timber bought inside the UK only)
  2. FSC, PEFC or SFI certification
  3. Risk assessment/due diligence documentation demonstrating a low risk of non-compliance with the ‘legally traded’ requirements given in the manual.

Legally harvested and traded/Legal and sustainable timber – Reclaimed/recycled timber - KBCN0654

Timber should, wherever possible, be sourced in accordance with the UK Government’s Timber Procurement Policy. However, if for reclaimed timber the original procurement details are unobtainable, robust evidence to demonstrate it has been reclaimed can be acceptable. The government UK Government Timber Procurement Policy Timber Procurement Advice Note (6th edition) states: As an alternative to demanding timber and wood-derived products from a Legal and Sustainable source, Contracting Authorities can demand ‘recycled timber’. Documentary evidence and independent verification will also apply to recycled timber and recycled wood-derived products but will focus on the use to which the timber was previously put rather than the forest source. And defines ‘recycled timber’ as: “…recovered wood that prior to being supplied to the Contracting Authority had an end use as a standalone object or as part of a structure and which has completed its lifecycle and would otherwise be disposed of as waste. The term ‘recycled’ is used to cover the following categories: pre-consumer recycled wood and wood fibre or industrial by products but excluding sawmill co-products (sawmill co-products are deemed to fall within the category of virgin timber), post-consumer recycled wood and wood fibre, and drift wood. It also covers reclaimed timber which was abandoned or confiscated at least ten years previously.” As per the above policy, BREEAM requires “Documentary evidence and independent verification” that all reclaimed/recycled timber products meet the definition of ‘recycled timber’ given above.
01/06/2020: Amended to clarify and extended applicability to Mat 03

Mat 01 / Mat 03 calculator not big enough - KBCN0647

If a project has more specifications than there is rows available in the tool you can group specifications that have the same green guide rating/responsible sourcing level with each of the specifications with the same rating listed in the same row. The proportion that they contribute to the overall area is also combined. For example where a project has 30 different upper floor specifications, if 10 upper floor specifications are A+, 10 are A, 5 are B and 5 are C then you would only need to use 4 lines.

On site fabrication - KBCN1292

Where concrete (or another construction product) is produced on site, there is no requirement to provide responsible sourcing certification for the end product. As in this case fabrication on site is effectively part of the onsite building process, the certification of the individual products (e.g. aggregates, cement), as delivered to site, shall be used in the assessment instead.

Outdoor foundations - KBCN0787

Outdoor foundations for lighting poles, bike racks, charging stations, etc., need to be included under hard landscaping, provided they are above the cut-off volume.

Raised access floors - KBCN00018

For the purposes of Mat 03, raised access floors should be considered as part of the floor structure. HQM - Applies to HQM's Responsible Sourcing of Construction Products assessment issue.

Responsible sourcing – Apportioning areas within a building - KBCN1334

Where there are common elements between the various areas within a building, for example where multiple assessments are conducted for different parts of a building, or where one area of a building is under assessment and others are not, an apportioned approach can be taken to Mat 03.  For products following Route 2, an allocation process can be considered acceptable. An explanation of the allocation process used should be provided and the following guidance applies;  Common elements (e.g. roof, foundations, external walls etc) - apportion a percentage of the total impact of the element to each assessment based on their percentage share of the GIFA (e.g. if an assessment accounts for 10% of the total GIFA, 10% of the element's impact is apportioned to that assessment)  Elements that are only in a given assessment (e.g. internal partitions, internal finishes etc.)- 100% of the impact is allocated to the assessment they are in.  Route 1 products do not take in to account quantities so, if they are common element, they will still need to be included in the assessment. 

RSCS summary score level for BES 6001 products - KBCN0955

For products certified under BES 6001, the rating score (between 5 and 7) can be found in the Green Book Live. This is the rating that needs to be entered in the Mat 03 calculator. The RSCS score that is entered into the Mat 03 calculator comes from the relevant table in Guidance Note 18. However, for BES 6001, the score is per certificate because 6001 works at different levels of rigour.  Once you have found the product, by searching on the page below, click 'More..' on the right-hand side to reveal further details, including the BREEAM score level. GreenBookLive Responsible Sourcing

Scope of ‘Building services’ location/use category - KBCN000001

'Building services' refers to the equipment and distribution systems specified for providing heating, power, ventilation, lighting, air-conditioning and domestic water services in a building. As a minimum, this location/use category should include the equipment and controls specified for the building services. Refer to Guidance Note GN24: Demonstrating Compliance with BREEAM Issue Mat 03 issue for more information.
18/10/2018  Applicability to UK NC2018 removed; relevant guidance is included in the technical manual.

Setting of Responsible Sourcing Certification Scores (RSCS) - KBCN00017

Mat 03 credits require the majority of the materials used to be sourced with a high RSCS score. While maximum points (10) are available for reused materials the points available for RSCS's are typically less than 10. The available points are representative of the relative merits of each source while also providing some incentive for each scheme to improve and gain higher scores in the future. The latest points scores for each RSCS route are available in the latest version of GN18.  

Sustainable Procurement Plan: Relevant Standard - KBCN0767

The correct standard in the definition of Sustainable Procurement Plan is now BS ISO 20400:2017, which supercedes 8903:2010 - Principles and Framework for Procuring Sustainably. In the UK manuals BS 8903:2010 was incorrectly listed as BS 8902:2009. All relevant references will be updated to BS ISO 20400:2017 in the coming re-issues of the manuals.
05/10/2017 New reference to BS ISO 20400:2017 added.
03/11/2021 Issue 2.0 of the UK RFO technical manual corrected.

Information correct as of 26thOctober 2021. Please see kb.breeam.com for the latest compliance information.