Building elements - Finland

21,63 € / CORC

Carbon Removal Information info

Permanence info : Over 50 years
Status of production info : Audited
Unit of product volume info : m3
Net negative per unit info : 0,4869
Year of CO2 removal info : 2019
Amount to negotiate info : 74

Description info

Over the centuries, log construction has formed part of the Finnish scenery and mental landscape. Log house production is energy self-sufficient, and even produces added energy, as it generates more energy waste by-product than the energy it takes to manufacture the product. Hirsitaloteollisuus is the Finnish Log House Industry Association and its member companies build 80% of the log houses in Finland.

How it works

Growing trees captures CO2 - a tonne of wood binds 1,8 tonnes of CO2 while growing. But the CO2 may go back to the atmosphere if the trees are cut, decompose or are used for paper or energy. In the case of wooden building elements, the place in the value chain where it makes no economic sense to let the CO2 escape back into the atmosphere is the facility where the logs are cut to measure for a specific building. After this point it would be unwise to use the resulting elements for anything else than creating a long term carbon storage.

In Europe, buildings are regulated to have a minimum lifetime of 50 years, and in real life the CO2 storage is likely to be longer. By storing CO2 for a minimum of 50 years, wooden building elements present an opportunity for companies to invest in carbon capture and storage, and take proactive steps towards carbon net zero.

The wood used by Hirsitalo is sustainably harvested according to Forest Stewardship Council principles. The average (145 m2) Finnish log house stores over 30 000 kg of CO2 and locks it into long-term storage that stays out of circulation for decades.

After the production has been verified for carbon negativity, the extra carbon stored in the wooden building elements is issued CO2 Removal Certificates, CORCs, per each ton of CO2 removed from the atmosphere.

Examples of usage info

Annual construction:

  • 1300 personal homes, Finland
  • 1500 vacation homes, Finland
  • 60 public schools and daycares, Finland

Co-benefits info CORCs only quantify the net-removal and storage of emissions, not reduced or avoided emissions, increased biodiversity or other positive benefits. Here are co-benefits self-reported by the removal supplier.

  1. Better indoor air: Our products improve the indoor air quality and provide healthier living conditions.
  2. Green jobs: manufacturing wooden building element creates green jobs and often in regions where news jobs are badly needed.
  3. Replacement of materials and their emissions: Use of  our product can displace use of other materials like cement and steel that would have caused emissions. Nearly 4 tons of CO2 emissions may be avoided for each tonne of dry wood used that displaces concrete-based materials.
  4. Inherent cascading recyclability: Log houses can be recycled in many ways unlike metal or concrete building structures: log houses have traditionally been moved to new places log-by-log. If they are ripped apart, the wooden material can be reused for packaging, biochar and many other applications. And as the last step in its life-cycle wood chips from the house can serve as bioenergy.
  5. Maximum sink and storage at the same time: A full grown tree trunk is as good a carbon storage in the forest as it is in the building element, maybe slightly better protected from fires and insects in the building. The difference is in the sink part – how much new carbon capture can be achieved in the same forest. Harvesting full-grown trees from forests makes room for reforestation – and our timber comes from certified forests that are always re-grown.

Acceleration impact info

The extra income from Puro is used for member companies’ development initiatives, such as improving the recyclability of log houses. It will also be used to develop tighter collaboration with universities, for example investing more funds in student theses.

Climate impact

1 tonne of log removes  0,4869  tonnes of CO2 eq. from the atmosphere into long-term storage in the product. Life-Cycle Assessment made by Rakennustieto followed the methodology described in ISO 14044 and ISO 14064 standards where applicable.

Audit Information

Compliance to Puro methodology requirements is done by independent assessor DNV LG. Their auditor visits the production facility, validates the accuracy of data, including the carbon net-negativity evidence presented in a Lifecycle Assessment (LCA) or Environmental Product Declaration (EPD) report, and issues an audit statement.
Independently verified by info : DNV GL, Heikki Lahtinen

Hirsitaloteollisuus Ry

Hirsitaloteollisuus Ry
Company URL:
Phone:+358 50 376 5901
Email address:
Contact person: Seppo Romppainen
Location: Kidekuja 2, 88610, Finland
Interested in buying larger amounts? Please send a message!
You can buy minimum 5 and maximum 1000.

Purchase CORC from Hirsitaloteollisuus Ry

108,15 €
Price excluding VAT. Prices include service fee.
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