Doors on the wonk

[Andy Unique]

Hi,

I have an outbuilding with a pair of large doors, both like the picture below. They’ve started to sag towards the centre, which might not be a surprise given their size and the lack of bracing.

I’m not sure what I can do to fix it so I was hoping for some advice.

I see 2 problems; getting them square and then keeping them that way. To square them up I was considering mounting some eye bolts through in the top right/bottom left corners and putting a ratchet strap on there. I could then dowel through the tenons to try and pin them (since properly re gluing them isn’t really an option).

I guess the door also needs diagonal bracing? I’m not sure if the centre member is mortised in to the top and bottom or just there to support the cladding, but I see 2 options: a 2 piece brace birds mouthed in to the centre vertical, or cut a gap through that centre member and run a single long brace through the middle.

The depth of the door would allow for timber about 30mm thick to be used.

Any thoughts gratefully received, along with any alternative solutions. I am not exactly a master carpenter so whatever option is most likely to work with the best margin of error is probably best..

Thanks

 

[mattylad]

Diagonal bracing would likely have preventing them sagging in the first place.
Take them off and lay them on a flat surface, ensure one corner is against an immovable object (wall etc.) and knock the opposing corner until it's square. Then redo gluing and screwing and fit braces is about all I can suggest (I'm no expert).

 

[Scally-Ho]

In addition to all of the above, and after the above, I also suggest fitting large flat "L" brackets to each corner intersection. When I say large, at least 12" to each leg and maybe even more if can be found. Screw each bracket to door using 12G stainless screws as a minimum and to a length that will be just 1/8" from breaking through to the face of the door.

 

[foxhole]

https://www.amazon.co.uk/Stainless-multifuctional-Bracket-Triangle-Cabinet/dp/B08PCGFKWR/ref=asc_df_B08PCGFKWR?mcid=671ac179230e3fb1a4e0592f62c17ae4&hvocijid=10078401264180593324-B08PCGFKWR-&hvexpln=74&tag=googshopuk-21&linkCode=df0&hvadid=696285193871&hvpos=&hvnetw=g&hvrand=10078401264180593324&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9044927&hvtargid=pla-2281435176938&psc=1&gad_source=1

 

[foxhole]

https://www.amazon.co.uk/100mm-Small-Bracket-Corner-Repair/dp/B0968Q4WGN

 

[foxhole]

Or remove door and ensure it’s square and face with a sheet of ply .