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Detached garage, thermally broken entrance.


Russdl

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After going to the effort and expense of insulating the slab, walls, roof and door I had to do something about the transition from outside to inside the garage. Garage slabs normally extend beyond the door creating a big thermal bridge that I didn't want. What I decided to do was use some GRP box section to thermally break the inside from the outside.

 

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It's early days but it seems to work well and it hasn't fallen to pieces with cars driving over it yet, which is a bonus. I may be on to a winner.

 

To start with I resin anchored some threaded bar into the slab and then bolted the GRP to the slab. I then rammed some left over foam glass into the gap underneath the box section for added support.

 

I also used GRP angle as a 'stop' for the EWI on the returns to the door and the door head. 

 

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I'd filled the box section with left over insulation and finished it off with expanding foam, added some left over mesh, shuttered it and made myself a concrete entry ramp. A quick lick of paint finished it off and it all largely seemed to go to plan as well. Here's hoping it stands the test of time.

 

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Solving that thermal bridge was a big concern of mine in the very protracted thinking stages and once I had (well, I think I have, happy for contrary feedback) it drove everything else and I went a bit nuts on the rest of the plan. Hence the insulated slab, walls, roof and door.
 

Hopefully it’ll stand the test of time - if we get a proper winter I’ll report back. 

 

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