The traditional vertical sliding sash window is made of one or more movable panels or ‘sashes’ that form a frame to hold panes of glass which are often separated from other panes (or "lights") by narrow Muntin muntin bars. Although any window with this style of Glazing in architecture glazing is technically a ‘sash’, the term is used almost exclusively to refer to windows where the glazed panels are opened by sliding vertically. Vertical sliding sash windows are also known as sash and case windows because the weights are concealed in a box case. The oldest known examples of vertical sliding sash windows were installed in the 1670s.
The vertical sliding sash window is typically found in Georgian architecture Georgian and Victorian architecture Victorian houses and the classic arrangement has three panes across by two up on each of two sashes, giving a "six over six" panel window, although this is by no means a fixed rule. Innumerable late Victorian and Edwardian period Edwardian Suburb suburban houses were built using standard sash window units approximately 4 feet (1.2m) in width but older, hand-made units could be of any size. It consists of an upper and lower sash that slide vertically in separate grooves in the side jambs or in full-width metal weatherstripping. This type of window provides a maximum face opening for ventilation of one-half the total window area. Each sash is provided with springs, balances, or compression weatherstripping to hold it in place in any location.
Construction was usually of Softwood softwood and units were generally single Glazing in architecture glazed. Traditional problems with wooden sash windows include Rot rot, swelling or distortion of the woodwork, rattling in the wind (due to shrinkage of the wood) and problems brought on by careless application of paint. The sliding mechanism makes vertical sliding sash windows more vulnerable to these problems than traditional Casement window casement windows.
Vertical sliding sash windows are relatively high maintenance, but offer advantages in return (classic good looks, conformance with conservation requirements relating to older houses and buildings, use of natural resources, etc.). It is also possible to clean all the glass from within the building by sliding the two panes to different positions.
A significant advantage of vertical sliding sash windows is that they provide efficient cooling of interiors during warm weather. Opening both the top and bottom of a sash window by equal amounts allows warm air at the top of the room to escape, thus drawing relatively cool air from outside into the room through the bottom opening.
These days, the need for creature comforts and energy conservation means the traditional vertical sliding sash or sash and case window is largely consigned to history. But, happily, there are now modern, energy efficient, high performance variants which maintain the classic good looks of the traditional vertical slider window.
Norscot supplies two options:
A timber sash and case vertical slider window with Georgian style and aesthetics which are so characteristic of the traditional sash and case window, but incorporating modern technology to meet the demands of the 21st Century.
The timber sash and case vertical slider is available in four variants; Box, Simplex, Spiral Balanced and Tilt and Slide. The Box and the Simplex are the most traditional style, utilising the weights and cords system, with the Simplex providing an easy clean system. The Spiral Balance uses special springs which mimic the weights and cords without using the same amount of space. This means that the box is now replaced with a more modern casement. Undoubtedly the premium window in our range, this sash and case will lend its elegance to any modern or traditional building.
The Tilt and Slide sash and case is the latest addition to our window range. This product is similar to the Spiral Balanced window except that both sashes can be tilted inwards to facilitate easy cleaning. As such, this window is perfect for residential developments or tower blocks where outside cleaning could be a problem. This variant is also available as Secured by Design as well as being certified to an extreme weather rating, which enables the window to withstand the highest levels of water and air pressure.
The new VEKA Vertical Slider brings together three powerful elements - one of today’s most popular window styles, the industry-leading fully sculptured Matrix FS and the quality assurance that comes with everything carrying the VEKA brand.
A great looking classically-styled window, it is suitable for both retro-fit and new-build installations. The pleasing slimline appearance belies a high performance, energy-efficient design. Slimline sashes offer improved window looks and superior Window Energy Rating performance.
VEKA remains the No.1 choice of social and commercial specifiers throughout Britain and Ireland with a reputation second-to-none for technical excellence and superb good looks.
There can be little doubt Norscot has stood the test of time. This means customers can expect products which are “fit for purpose” and a reliable service. They can also have total confidence in the comprehensive guarantees offered by the company.