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12 ANATOMY OF A SASH WINDOW
1 BOX FRAME 8 BOTTOM RAIL
The frame of the window containing The horizontal rail at the bottom of
the weights. the lower sash is referred to as the
Bottom Rail. It is normally twice the
height of the top rail.
KNOWLEDGE HUB 2 PULLEYS 9 CILL
This timber section sits at the bottom
A wheel on an axle which is designed
of the sash window and is usually
to support movement of the Sash Cord
made of hard wood, it’s designed so
to counter balance the sash. Chain can
that the rain water flows away easily.
be used in a Square Groove Pulley.
10 WEIGHT
3 WEIGHT CHANNEL A sash window can either use Steel or
Lead Weights to counterbalance each
These are the two runs either side on sliding sash. Top sashes are normally
the sash window. These are the pockets overweighted, whilst Bottom sashes
which the weights run to counterbalance are underweighted.
the weight of the sash.
11 TIMBER LININGS
The Box Frame has sections that
create the casing in which the
4 PARTING BEAD Weights are located.
This is a long narrow seal which
is available in timber, PVCu and
timberwood. Its fitted to create 12 WAG TAIL
separate channels for the top and This is a strip of timber which sits
bottom sash to run in and holds the inside the box frame and separates
sashes in place. It is also used to the weights so they do not touch
help weatherproof the window.
each other.
Cut the timber parting bead at the
meeting rail and reverse it for the 13 SASH CORD
bottom sash so the brush is facing
the timber frame. The Sash Cord is used to attach the
weights to the sash and runs through
a sash pulley (Axle Pulley). Sash Cord
5 MEETING RAILS is sold in rolls of 20m, 50m and 100m
Literally where the central horizontal and available in 6mm or 8mm.
rails meet.
14 SOFFIT LINING
The top of a window is called the
Window Head which is made up of the
Timber Linings and a separate Soffit
6 STAFF BEAD Lining. These are blocks which are
used add extra support to the Frame.
Used around the edge of the Box
Frame to hold the bottom sash in place 15 TOP RAIL
and create a seal to prevent heat from The horizontal rail at the top of the
escaping and to improve the energy top sash is referred to as the Top Rail.
efficiency of the window.
7 STILE 16 PULLEY STILE
The left and right part of the frame Forms the internal sides of the box
on a sash. frame and contains the pulleys and
the parting bead.
0800 056 0471 order before 4.45pm for same day fast despatch
