Dictionary

Safety pane

Pane of toughened or laminated glass with improved breaking strength and breaking pattern compared to ordinary glass. The illustration shows an insulating pane with laminated glass on one side.

Sash

The part of the window in which the IGU is mounted. See Sash window.

Sash window

A window sliding vertically with two parts (sashes) that overlap slightly and slide up and down inside the frame.

A single hung sash window has one movable sash (usually the bottom one) and the other one is fixed.

A double hung window has two sashes, an upper sash and a lower sash, positioned one over the other to allow venting from the top or bottom.

Secondary glazing

Additional glazed sash/casement usually placed on the inside of the frame. It improves the heat and sound insulation of the window. It can also be placed on the outside.

Secret nailing

A way of nailing glazing profiles with small fittings in stead of nails.

Shutter

A wooden or metal panel to be placed on the outside before the window to protect against sun light, the cold or burglary. It is fixed by hooks on the outside or on the inside by revolving wings on a bolt mounted on the mullion so that the wings can be turned across the shutters.

Side and bottom hung

See tilt-and-turn.

Side frame

The side of the window frame. See also frame.

Side hung window

A window hinged in one side.

Sill

A piece of sloping brick edge, clinkers or the like forming the base of a window. On the outside it covers the wall from the bottom frame till the edge of the wall. It leads away the water from the window and the façade. When on the outside, also called window ledge. The term sill or cill is used for both inside and outside.

Skylight

A small window or roof hatch built into the sloping roof. Made for non-insulated rooms. See roof window, roof dome.

Slide hinge

A window hinge moving the rotation axis of the sash when opening the window. Used for reversing window.

Sliding window

Sliding windows have sashes that move horizontally on a track. Both sashes may slide, or  only one of the sashes moves and the other is fixed.

Spacer bar

A component used to separate the glass sheets of an insulating pane. Usually made of aluminium, steel or vinyl/PVC. Also called spacer profile, spacer.

Stay bar

Iron bars installed across a leaded window in order to strengthen the construction.

Striking rebate

The part on the inside of a window frame against which the window sash strikes. Also called striking bead.