Wood door that has sagged slightly

[richardindorset]

We have some big, heavy double glazed bi folds made from accoya. They are 5 years old and due for some paint but I've noticed the joints have opened up on the frames a little so the door is no longer square. Not sure the technical term for this, but before I paint them, is there a way to get them back to square? Work glue into the opened joints and then sash cramp with the dropped corner jacked up? Or just ignore it, fill it and paint over?

The doors operate fine but I don't want it getting worse.

The gaps are small and appear to worse in the lower corners only - furthest away from the supported side.

 

[JohnD]

Stand back and take photos of the entire doors and frames please.

Five years old?

I imagine they were quite expensive? Do you know if they were mortise and tenon construction?

Do you know the manufacturer?

 

[freddiemercurystwin]

Surely still covered by the warranty at 5 years old?

 

[richardindorset]

Sadly not under warranty. Manufactuer folded.

 

[JohnD]

the hinges are incorrectly positioned, which is surprising, but it looks to me like the wedges in the tenons are loose.

I would be possible to reshape it and rewedge, but I am no joiner.

 

[Deluks]

Cramp it up and pin the tenons?

 

[Diver Fred]

Looking at your posted pictures the door doesn't appear to opening a gap at the top. Measure the width top and bottom - should be the same. Then measure the diagonals - top Right to bottom left, top Left to bottom right.

If the doors are wider at the bottom then take them off, cramp up across the width, check for square. Then pin the mortise and tenons.
If the doors are out of square then it's take them off, pull square with a cramp across the diagonal. whilst that cramp is on cramp across the width and pin the mortise and tenon joints.

Definitely the hinges into the casing are wrongly positioned* and there should be a minimum of 3 and ideally 4 with that weight of door.
* 9 inches up, 6 inches down, and the 3rd in the middle or with 4 equally spaced between the top and bottom. No hinge should go into a joint.

 

[crank39]

It's a bifold door by the looks of it so the top and bottom hinges HAVE to be right at the top and bottom, ones probably a bogey wheel and top ones a guide