Side hung window hinges

What lengths suit most side-hung sashes?

Common sizes are 12" and 16" for average vents; larger/heavier sashes may use 20". Match the length of your old hinge for best closing geometry.

13 mm vs 17 mm stack height on side-hung

Stack height sets how the sash sits in the frame. 13 mm = lower profile; 17 mm lifts the sash slightly. Re-use the same stack height as your old hinge to avoid fouling and poor sealing.

Do side-hung hinges come in egress or easy-clean versions?

Yes. Egress side-hung hinges open wider to maximise clear escape space. Easy-clean adds a sliding position so you can reach the outside pane from indoors. Check your vent width/height and any safety requirements before choosing.

What screws and fixings should I use?

• Stainless countersunk screws only (to avoid rust marks).
• Typical sizes: 4.0–4.8 mm diameter, 16–25 mm length depending on profile.
• Use all available holes; don’t mix old and new screws if heads are damaged or spun.

How do I set the friction correctly?

Each hinge has a small friction screw near the pivot. Open the sash, then adjust both sides evenly until the sash stays put when half open but still closes smoothly. Over-tightening can cause stiff operation and premature wear.

My side-hung sash has dropped — will new hinges fix it?

Often the cure is to re-heel & toe the glass (re-pack the glazing diagonally) to lift the handle side. Dropped sashes can make new hinges feel “wrong” even when fitted correctly, so check packing before blaming the hinge.

Clearances and snag checks before ordering

• Measure hinge length and stack height from the old part.
• Confirm the sash doesn’t foul trims or trickle vents when fully open.
• Photograph the end caps and slider on your old hinge — useful to match like-for-like.

Should I fit restrictors on side-hung windows?

Restrictors are great for child safety and windy locations. Choose a model with an override release if the window needs to double as an escape route.

Installation tips for a neat close

• Replace hinges in pairs and keep the frame/sash fixings level and parallel.
• Lightly nip screws, test close, then fully tighten — this avoids pulling the sash out of square.
• After fitting, check gasket compression all round; adjust friction last.