Biobased construction materials
This methodology covers projects that manufacture biobased construction materials and/or use these materials in building construction or renovation.
Methodology name
Biobased construction materials
Version
3.0
Methodology ID
RBW-BIOBM-01-CONST-V3.0
Release date
July 6th, 2026
Status
Public consultation
See the glossary for methodology-specific terminology 👇
Glossary
Biobased construction material
Materials derived from biomass that are used in construction and other applications
Biogenic carbon
Carbon from organic matter that can be sequestered and stored in biobased products during their production, and released back into the atmosphere if they are incinerated or decayed. It is considered part of the short, natural carbon cycle, as opposed to fossil based carbon
Biobased product
A construction product containing biomass and its associated biogenic carbon.
Building element
A component of a building, composed of construction products. To be eligible under this methodology, it must include at least a fraction of biobased products.
Biomass
The biodegradable fraction of materials from biogenic origin, such as trees, plants, and agricultural and urban waste
Environmental Product Declaration (EPD)
A standardized and independently verified document that communicates the environmental performance of a product, including construction materials, based on a life cycle assessment
Reference service lifetime
The expected or predefined period of use for a product or construction material, measured in number of years. Used for assessing its environmental impact over its life cycle
Modules A-D
Components and terminology of an environmental assessment under EN 15804, outlining the stages of a life cycle assessment for construction materials. They encompass (A) Production, Construction and Installation (B) Use (C) End of Life, and (D) Benefits and loads beyond the system boundary.
Project biobased material
The biobased material from the project that is subject to removal and/or avoidance Rainbow Carbon Credit issuance. Its production/use is the mitigation activity for this methodology.
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