# Reuse button feature

**URL:** <https://community.realtimelca.com/t/reuse-button-feature/183>\
**Category:** Features and Ideas\
**Created:** [November 13, 2024, 10:41am UTC](https://community.realtimelca.com/t/reuse-button-feature/183 "2024-11-13T10:41:31Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Magda](https://avatars.discourse-cdn.com/v4/letter/m/dc4da7/32.png) [@Magda](https://community.realtimelca.com/u/Magda)\
**Post date:** [November 13, 2024, 10:41am UTC](https://community.realtimelca.com/t/reuse-button-feature/183/1 "2024-11-13T10:41:31Z")

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Hello

Wev’e just started using RealTime LCA in our studio and we are discussing the Reuse button feature. We work a lot with existing buildings and we are trying to figure out how to include them in our LCAs.

We are wondering what happens when we tick the Reuse button on a material? Does it mean the material is not included in the calculations at all or only excluded from some fases? There is a difference if you use structures existing on site or just reused materials that have to be transported and treated.

A way to approach it could be ticking the Reuse button on reused (but transported) materials and just excluding the structures existing on site from calculation (when they become gray) - just a thought.

Thanks a lot

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**Author:** ![Mads\_Ditlevsen](https://dub1.discourse-cdn.com/flex005/user_avatar/community.realtimelca.com/mads_ditlevsen/32/129_2.png) [@Mads\_Ditlevsen](https://community.realtimelca.com/u/Mads_Ditlevsen)\
**Post date:** [November 13, 2024, 7:40pm UTC](https://community.realtimelca.com/t/reuse-button-feature/183/2 "2024-11-13T19:40:25Z")

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Hi Magda

Thank you for your question.

The reuse button sets the materail to 0 according to the danish regulations, but the materials will still show in your inventory. Link to the regulation: [Nu regnes genbrugte byggematerialer for 0 kg CO2 i bygningers klimaregnskab | Social- og Boligstyrelsen](https://www.sbst.dk/nyheder/2024/-genbrugte-byggematerialer-for-0-kg-co2-i-bygningers-klimaregnskab)

We are also working on a new feature for what you are describing in regards to existing materials, but there is still no official method for calculating it.

Best regards  
Mads

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**Author:** ![Magda](https://avatars.discourse-cdn.com/v4/letter/m/dc4da7/32.png) [@Magda](https://community.realtimelca.com/u/Magda)\
**Post date:** [November 14, 2024, 8:32am UTC](https://community.realtimelca.com/t/reuse-button-feature/183/3 "2024-11-14T08:32:30Z")

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Ok, that answers my question, thanks a lot!