Why can I feel a draught on my brand new patio sliding doors?

[Wiifitmama]

It is blowing a gale here (In London) tonight. We have brand new sliding patio doors that were done as part of an extension project. Four panels of glass with the inner/middle two sliding outwards over the outer two. At the edges of the inner/middle two doors, I can feel a draught. Now granted the weather is very unusual tonight, but this is worrying me for winter. We insulated the heck out of our home as part of this project and this seems ridiculous. Is this normal for these doors? Or are the doors crap? (distinctly possible as we have had huge issues with the window company.

A joss stick is useful for this. In still air the smoke will riser vertically, but it will be pushed away by the smallest aircurrent.

A few places:
in the gap between the frame and the brick wall, if the gap has not been properly filled in (it was probably hidden with a bit of plastic trim) or if the cavity was not correctly closed

Might be where the door fits into the frame. If it is a sliding door there should be a furry pile strip that accommodates movement. If it is a hinged door probably rubber tube.

Might be where the door meets.

Might be that the frame, or the hole in the wall, or both, are not square so do not fit each other, or the frame has been pushed into a trapezoid shape. If out of shape, the panels (which MUST be square) will not fit together.

when the inner doors are pushed together, they, and the fixed panels, should both have a U-shaped edge, and the open ends of the two U's push into each other. Each U will be lined with a seal.

If the hole is out of square, or too small, or the frame is bent, the doors will not pudh far enough for the U's to fit together.

It is possible to fix this by taking one or both doors out, cutting in shorter, fitting a new shorter glass panel, or by fitting a slightly smaller door. However it is caused by bodge fitting. You might be able to identify it by sliding only one door at a time into the close position and observing the seal, then do it with both and see if it can still slide into the U.

When they left the factory, they are pretty sure to have been perfect, so it is pretty sure to be a fitting bodge.

Do the doors just slide or do they move in and seal when they close? If they just slide then it will be difficult to get them sealed well, but as above it should be square enough to mostly seal in less windy conditions.

Thank you PigletJohn. Your second post fits with what we think. The fitting was a bodge for sure. We are still in dispute with the company. This is just a new fault we hadn't yet uncovered until tonight's weather.

I should add, they just slide. They do not move in at all. There is a black rubbery looking thing where the edge of the niddle sliding doors meets the fixed panels.

Hi,

Did your doors also creak and make a cracking sound?

Was there ever a conclusion drawn?