French Doors Will Not Close: What's Usually Going On

French doors that won't close, meet unevenly in the middle, or need a shoulder barge to shut usually have a mechanical cause rather than being genuinely too big for the frame. Because a pair of doors has to meet each other precisely as well as the frame, small movements are more noticeable than on a single door.

Why french doors show problems differently to a single door

With a single door, there's only one edge that has to line up with the frame. With a pair of french doors, both leaves have to meet the frame correctly and also meet each other exactly in the middle, at the meeting stiles. That means any small amount of drop, twist or hinge wear on either door shows up clearly as a gap, an overlap, or a door that won't quite reach the striker plate.

It's worth working out early on whether one door or both are affected, and whether the problem is at the top, the bottom, or right through the height of the door, since this narrows down where to look.

Hinge wear and dropped doors

The single most common cause of a french door not closing is a dropped leaf, where the hinges have worn or the screws holding them into the frame have loosened over time, letting the door sag very slightly. Even a few millimetres of drop is enough to throw the door out of alignment with the striker plates along the frame.

This usually shows as the door dragging on the threshold, or the top corner catching on the frame while the bottom seems to have room to spare. Tightening the hinge screws, or in some cases packing the hinge slightly, can correct minor drop, but a badly worn hinge will need replacing rather than adjusting.

The frame and threshold

Timber frames in particular can swell in wet weather and shrink back in dry conditions, which explains why some french doors close fine for most of the year and only stick during a damp spell. uPVC and aluminium frames are less affected by moisture but can still move slightly if the surrounding wall or lintel has settled.

A threshold that's collected debris, or a weather bar that's slightly bent, can also stop a door reaching all the way home even when the hinges and frame are otherwise fine, so it's worth checking along the bottom edge before assuming the fault is higher up.

Locking points and the keep

French doors typically lock into several points along the frame using a multi-point mechanism, and if the doors are even slightly out of alignment, these locking points won't line up with their keeps. This can feel like the door is closing normally but the key won't turn, or that the handle needs lifting with real force to engage the hooks.

Forcing a misaligned lock repeatedly is one of the most common ways a multi-point mechanism ends up damaged, since the internal gears aren't designed to take that kind of resistance regularly.

• Check whether the door closes but the key won't turn, versus the door not reaching the frame at all
• Look for scuff marks on the frame near the locking points, which suggest the door is catching there
• Try lifting the handle gently rather than forcing it if the hooks feel tight

The meeting point between the two doors

Where the two leaves meet in the centre, even a small twist in one door can leave a visible gap or an overlap that stops the other leaf sitting flush. This is often mistaken for a sizing problem, when in most cases it's the hinges on one or both doors that need adjusting rather than the doors being wrong for the opening.

What you can safely check yourself

Before calling anyone out, it's worth checking that hinge screws are tight, clearing any debris from the threshold and track, and looking closely at where the door is actually catching. This costs nothing and sometimes resolves a minor issue on its own, but persistent misalignment, a badly dropped door, or a lock that won't engage properly are best left to a glazier to avoid making the fault worse.

Getting french doors working properly again

We cover hinge adjustment and replacement, lock repairs and general realignment on french doors across Central London and the M25. If the lock mechanism itself has failed, our door lock repairs and hinges and handles services cover the parts most likely to need replacing, and upvc window repairs covers the wider frame if that's part of the issue. Send a few photos through the quote page or call Mark on 07535 916982 to talk through what you're seeing.

Call Mark on 07535 916982 or request a callback.