DIY Doctor

Main navigation

Gap above doorway causing cold in bedroom above garage?

Postby York75 » Sun Nov 07, 2021 10:05 am

Hi All,

I'm currently diagnosing a cold bedroom above a garage extension, I know many people post about this. But rather than the common questions I have a new one (I think anyway). FYI I am a DIYer.
The garage below the room has an exterior door. The concrete lintel is alongside a steel plate. This steel plate has holes in it and is covering a void of 15x88cm, not sure how deep it goes but atleast 10cm straight up. Within this, half of it seems to have a block of polystyrene in it but the other half is empty. The gap is roughly where the skirting is in the room above, and there is a draught coming from under the skirting.
So my question is, 1) why is there this gap? 2)can i fill it? Maybe just squirting expanding foam inside it or cover the outside with some concrete/fabric? 3) if I did any of those would I cause more problems further down the line?

I'll try add some photos

Any help really appreciated. Cheers guys.
Rank: Labourer
Progress to next rank:
Posts: 1
Joined: Sun Nov 07, 2021 9:53 am


Simply Build It

  • DIY How to Project Guides
  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!

  • Related Topics