Could also just do a flitch plate above the door, doesn't look too hard
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youtu.be
Mild Steel Flat Bar | 120mm x 10mm | Steel Flat Bars
Mild steel flat bars (120mm x 10mm), used for joining to other plates to add resilience and stability. Buy steel from local suppliers.
![shop.buyabeam.com](https://shop.buyabeam.com/suppliers/bristol/flats-flitch-plates/10mm-thickness/products/120-x-10-flat-bar/assets/images/icons/favicons/cropped-buy-a-beam-favicon-1-32x32.png)
![youtu.be](https://i.ytimg.com/vi/0StFVm7Or9w/maxresdefault.jpg?sqp=-oaymwEmCIAKENAF8quKqQMa8AEB-AHUBoAC4AOKAgwIABABGGUgWShOMA8=&rs=AOn4CLBPke6pfgvHLk_F2ArJrqP5_4ZA4w)
How to make a flitch beam for a garden room with a large span roof
We did this before, but probably never did a decent video.hope this explains it more.
![youtu.be](https://www.youtube.com/s/desktop/a7b1ec23/img/favicon_32x32.png)