The section from the lower part of the window to the floor. May be clad with a wooden panel.
Pin hinge
Furnishing for side hung windows.
Pivot window
A window, which sash opens around a horizontal axis halfway down the sash. The top of the sash opens inwards – the bottom of it opens outwards.
Pivot-hung window
Window with a sash opening on its vertical axis. One side of the sash opens inward – the other one outward. The centre of rotation may be more or less asymmetrically located.
Plant on bar
Ornamentation muntin (glazing bar) fixed on the outside of an IGU.
Plate glass
See flat glass;
Porthole
Small round or oval window usually in ships.
Post-modernist window
A window from the architectural period Postmodernism, about 1975-1990. A mix of details from earlier styles added with bright colours. Therefore no distinctive window from this period. However, coloured sashes and frames recur.
Profile
The view when making a cross-section of e.g. the frame or sash of a window.
Projecting casement
A window opening as a casement, but during opening the axis of rotation is moved to the middle. An opening between the side frame and the casement makes cleaning of the outside of the window possible from the inside.
Projecting top hung window
When opening the window the sash is lowered a bit vertically downwards. The top sash has a vertically movable rotation centre.
PU
Short form of the synthetic material polyurethane. Hard PU can be used for e.g. window components. PU foam can be used for insulation around windows and doors.
Putty
A sealant fixing the pane in the outside rebate on old windows. The traditional sealant is Linolic putty
Putty rebate
The rebate, into which the putty is pressed to keep the pane in place.
PVC
Short form of PolyVinylChloride, the most common plastic type used for plastic windows.
