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Sash Guide

Welcome to our sash guide

On this website we give details of the extensive range of sash window hardware developed by Mighton Products for timber sash window requirements leading into the 21st century. It includes for both new and renovation work. Uncover the individual workings of a traditional sash window using our handy guide.

Click on the hotspots on the sash window for more information on each of the components.

  • top-rail

    TOP RAIL:

    The horizontal rail at the top of the top sash is referred to as the Top Rail.

  • top-rail

    BOX FRAME:

    The frame of the window containing the weights.

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    SASH CORD:

    The Sash Cord is used to attach the weights to the sash and runs through a sash pulley (Axle Pulley). Sash Cord is sold in rolls of 20m, 50m and 100m and available in 6mm or 8mm.

  • top-rail

    WEIGHT CHANNEL:

    These are the two runs either side on the sash window. (See picture) These are the pockets which the weights run to counterbalance the weight of the sash.

  • top-rail

    PARTING BEAD:

    This is a long narrow seal which can available in Timber, PVCu and timberwood. Its fitted to create separate channels for the top and bottom sash to run in and holds the sashes in place. It is also used to help weatherproof the window.

  • parting-bead-2

    PARTING BEAD:

    This is a long narrow seal which can available in Timber, PVCu and timberwood. Its fitted to create separate channels for the top and bottom sash to run in and holds the sashes in place. It is also used to help weatherproof the window. Cut the timber parting bead at the meeting rail and reverse it for the bottom sash so the brush is facing the timber frame.

  • top-rail

    STAFF BEAD:

    Used around the edge of the Box Frame to hold the bottom sash in place and create a seal to prevent heat from escaping and to improve the energy efficiency of the window.

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    MEETING RAILS:

    Literally where the central horizontal rails meet.

  • top-rail

    STILE:

    The left and right part of the frame on a sash.

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    CILL:

    This timber section sits at the bottom of the sash window and is usually made of hard wood, it's designed so that the rain water flows away easily.

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    BOTTOM RAIL:

    The horizontal rail at the bottom of the lower sash is referred to as the Bottom Rail. It is normally twice the height of the top rail.

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    WEIGHT:

    A sash window can either use Steel or Lead Weights to counterbalance each sliding sash. Top sashes are normally overweighted, whilst Bottom sashes are underweighted.

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    WAG TAIL:

    This is a strip of timber which sits inside the box frame and separates the weights so they do not touch each other.

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    TIMBER LININGS:

    The Box Frame has sections that create the casing in which the Weights are located.

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    PULLEYS:

    A wheel on an axle which is designed to support movement of the Sash Cord to counter balance the sash. Chain can be used in a Square Groove Pulley.

  • top-rail

    SOFFIT LINING:

    The top of a window is called the Window Head which is made up of the Timber Linings and a separate Soffit Lining. These are blocks which are used add extra support to the Frame.

sash-window-guide