Window handle turning but the window won't lock? The espag (espagnolette) lock in the edge of the sash has probably failed. On an inline espag, the square hole for the handle spindle sits in the centre of the faceplate. We stock replacement inline espag window locks from Maco, Avocet, Nico, Kore and Versa.
Match the faceplate width, length and cam positions of your old lock. If the spindle hole is set back from the faceplate, you need an offset espag instead.
Measure the width of the strip on the edge of the sash and its overall length.
On an inline espag the spindle hole is in the middle of the faceplate. Check this before ordering.
Note how many mushroom cams or rollers there are and where they sit, so they line up with the keeps on the frame.
Look on the faceplate for a name or part number, such as Maco, Avocet, Nico or Kore.
Open the window fully and remove the handle. Undo the screws along the faceplate on the edge of the sash and ease the old lock out of its groove. Fit the new lock in the same position, refit the screws and handle, and check it locks smoothly with the window open before you close it.
An espag window lock where the handle spindle goes into the centre of the faceplate, as opposed to an offset espag where it is set back.
Only if the old ones are worn or don't suit the new lock. See our window keeps.
Browse all uPVC window locks: inline espag, offset flat faceplate, offset U-rail, shootbolt and window keeps.
Not sure which window lock you have? Send us a photo of the faceplate and gearbox with a tape measure in shot, and we'll match it for you.
Send us a photo to identify your partMonday to Friday, 8:30–12:30 and 13:00–15:30
