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HOUSING FIT FOR A CLIMATE EMERGENCY: WHOLE LIFE CARBON
THINKINGEilidh ForsterTwitter: @eilidh_forster
INTRODUCTION
Committee on climate change recommendations
Timber frame housing on new builds by 2025 How will increased timber demand be met?
Increased forest cover to 17% No clear plan, planting targets failing, no emphasis on commercial forestry
Important relationship
OBJECTIVES
Potential role of wood in climate change mitigation –important relationship between forestry and construction
Impact of building materials selection on the environment
How to make informed design choices
CARBON CAPTURE & STORAGE+
1. Harvesting ensures continued C capture
2. Store C long-term plus
3. Avoid emissions from concrete & steel
70% of stored carbon is in building materials
Avoided emissions doubles benefits
Recycling prolongs C storage and increases avoided emissions
SUBSTITUTED MATERIALS = AVOIDED EMISSIONS
•Saving of 10,000 kg CO2 eq in typical semi-detached (20% of total embodied C footprint)
•For every kg of wood use you reduce the C footprint
•For every kg of concrete or steel avoided you reduce the C footprint
•Can we do more… cladding, windows, doorsBrick and block vs brick and timber frame
TERMINOLOGY
1. Embedded CC stored in the material
2. Biogenic Cemissions that originate from biological sources, such as plants, trees and soil
3. Embodied Cemissions released during production of a material/product
4. Operational Cemissions released during the use of a product throughout its life
MAKING INFORMED DESIGN CHOICES•Life cycle assessment (LCA)
•Early assessment ensures optimal design
•Affordable
•Achievable by non-experts (e.g. etoolLCD)
https://www.naturallywood.com/wood-design/life-cycle-assessment
POWER TO MAKE CHANGE
Construction sector is one of biggest consumer of timber = influence forestry
Materials selection can make significant impact• 70% of stored carbon is in building materials • Avoided emissions double the benefits of timber
THANK YOU
Eilidh Forster
Twitter: @eilidh_forster