# Internal insulation narrow door frames

**URL:** <https://community.carbon.coop/t/internal-insulation-narrow-door-frames/1013>\
**Category:** Uncategorized\
**Created:** [27 June 2025 08:12 UTC](https://community.carbon.coop/t/internal-insulation-narrow-door-frames/1013 "2025-06-27T08:12:32Z")\
**Posts on this page:** 3\
**Page:** 2

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**Author:** ![Tim\_Gilbert](https://community.carbon.coop/user_avatar/community.carbon.coop/tim_gilbert/32/233_2.png) [@Tim\_Gilbert](https://community.carbon.coop/u/Tim_Gilbert)\
**Post date:** [4 July 2025 08:26 UTC](https://community.carbon.coop/t/internal-insulation-narrow-door-frames/1013/21 "2025-07-04T08:26:36Z")

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I think you should have been answering @Eric_Fewster rather than me.

I have had exactly the same problem with Green Building Store, as they were then. Also for a door. I asked whether it could be arranged to share a pallet with another customer and I’d collect from their site, but they weren’t cooperative.

So far I haven’t replaced the door but the old one has now developed a fault. It is a thermally broken aluminium door from the eighties (advanced for its time) and I can’t get the spares. I have a Rationel Windows outlet near me and will be paying them a visit.

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**Author:** ![davemanby](https://community.carbon.coop/letter_avatar_proxy/v4/letter/d/6f9a4e/32.png) [@davemanby](https://community.carbon.coop/u/davemanby)\
**Post date:** [16 February 2026 16:18 UTC](https://community.carbon.coop/t/internal-insulation-narrow-door-frames/1013/22 "2026-02-16T16:18:12Z")

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Try/look at [Thermablok Aerogel Insulation Blanket - Thermablok - Intelligent Insulation - High Performance Thermal Insulation](https://www.thermablok.co.uk/our-products/thermablok-aerogel-insulation-blanket/) it is like felt 1cms thick.in builders units that is about 100mm celotex of insulation. Not cheap but they will/did sell strips. We use it often for insulating structural steels. Scroll down to the insulationg section [Case study: Morda Oswestry. – AIRTIGHT BUILD Ltd](https://airtightbuild.wordpress.com/morda-oswestry/)

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**Author:** ![Tim\_Gilbert](https://community.carbon.coop/user_avatar/community.carbon.coop/tim_gilbert/32/233_2.png) [@Tim\_Gilbert](https://community.carbon.coop/u/Tim_Gilbert)\
**Post date:** [16 February 2026 17:26 UTC](https://community.carbon.coop/t/internal-insulation-narrow-door-frames/1013/23 "2026-02-16T17:26:43Z")

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I have looked at Aerogel in the context of insulating window reveals and will be considering it again for the door reveal once I get round to replacing the door.

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