Replace a uPVC window handle

Swap a worn or stiff uPVC window handle for a new one in a few simple steps, no drilling needed.

WH-01Check the fault before buying a handleClose the window fully and try the handle. A handle that spins loosely without locking usually has a broken cam inside. A stiff or sticky handle often just needs the mechanism lubricated instead of replacing. If lubricating with a light oil or silicone spray fixes it, you can stop here.

1 can · Silicone spray or light oil

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WH-02Measure the spindle and screw spacingLook at the square metal bar (the spindle) sticking out of the window frame under the handle. Measure its length in mm, and check whether it is a fixed square spindle or a split spindle (two sliding halves). Measure the distance between the two screw holes, usually 43mm on standard uPVC handles. Note the PZ height too, usually PZ92 or PZ122, printed on the handle or measurable between the spindle centre and the top fixing screw.

1 each · Tape measure

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WH-03Buy a matching replacement handleTake your measurements to a hardware shop or order online, matching spindle length, spindle type and screw spacing exactly. Handles come in different colours and styles, so check the finish matches your other windows if that matters to you. A locking (key) handle is a straight swap for a non-locking one if the spindle and spacing match.

1 each · uPVC window handle

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WH-04Remove the old handleOpen the window slightly so the mechanism is not under tension. Turn or peel back the small plastic cover at the base of the handle to reveal two screws. Undo both screws with a pozidriv screwdriver and pull the handle straight off the spindle.

1 each · Pozidriv screwdriver (PZ2)

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WH-05Fit the new handleSlide the new handle's spindle into the mechanism, keeping the window slightly open so it seats properly. Line up the screw holes and refit the two screws, tightening them evenly by hand until snug. Do not overtighten, as this can crack the uPVC or make the handle stiff to turn.

WH-06Test and tidy upOperate the handle several times with the window open and again with it closed, checking it locks and releases smoothly. Snap the plastic cover back over the screws if your handle has one. Wipe down the frame and put your tools away.

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