::: Derwent Sash Windows :::


	The Replacement Sash Window Specialists Across The East Midlands							Information (01773) 747456

Registered Company
No. 25588

Derwent Sash Windows Ltd.
Company Registration
6056303

Established 1994
©2009 Derwent Sash Windows Ltd.

Energy efficient
Secure & authentic
The perfect sash window

There cannot be a more quintessential style of window.

Simple in design and elegant in proportion, sash windows remain the most beautiful and efficient style of window ever created.

Having Bygone Collection sash windows installed,
will reduce heat loss by 74%, compared to single glazed wooden windows.

Bygone Collection sash windows give you peace of mind from knowing that you, your home and your loved ones are safe.

Use the first sash window to obtain Secured by Design endorsement from the Police.

Derwent Sash Windows only supply the Bygone Collection sash windows - the most highly rated sash window.

All of which means you get the finest quality products
available, that will look better and last longer than
cheaper versions.

This adds real value to your investment in your home.

The Bygone Collection is a superb range of sliding sash windows. Even competitors say the product is in a league of its own.
1. Horns (continuous) These are decorative extras below the top sash. Originally their purpose was to prevent the sash being pulled down too far and loosening the lead weights inside the box. Today they are purely decorative, recreating the traditional appearance of box sash windows. Unlike any others, these will not fade or discolour from that of the sash. These are not just firmly secured to the sash and not relying upon springs that often pop out! These are actually sculpted from the sash itself to eliminate any joins or weld lines.
2. Timber Effect (finish) The Bygone collection is now available in a white woodgrain effect PVC window, OR as a standard white.
3. Cam Catches (security locks) This was perhaps the weakest part on old sash windows, as burglars would flick the latch with a butter knife! With a choice of colours from white to pewter, the key-locking (right and left handed) claw cams provide all the strength required to deter unwanted visitors.
4. Lift Out Pivot Bars (quick release system) As we know, windows are not just for letting in the light. Sometimes you may need to open the window to move things such as furniture through a window. We have created a split pivot bar technology, so you can remove the sash without the need to tamper with the balance mechanism. This two part pivot bar system allows a DIY method to quickly and safely remove and easily reinstall the sashes.
5. Astragal Georgian Bars Traditionally, double-glazing companies have found the cheapest and easiest way to put Georgian bars on to windows. This is evident with most companies putting Georgian "canes" inside the two sheets of glass. They rarely look real and act as an immediate give away. Cheap to produce, but extremely dull and a very poor imitation of the real thing. The brilliant white bars never get rained on so at first they may look similar to the rest of your new windows, but in time they will shout out "DOUBLE GLAZING" as they stay brilliant white against the weathered feel of the rest of the window. With our windows you have a choice. Internal bars, if cost is the only factor, however these do not look realistic. Or surface mounted, "real-feel", bonded astragal bars which add a third dimension to your windows. Protruding from the surface of the glass the way the muntin bars did on the originals - these create depth, character and shadow lines.
6. Balance Retaining Clips Goods in transit are liable to move about. It’s natural and impossible to prevent, be it movement in the factory, delivery vehicle or just the fitters installing the window. Not surprisingly then, sometimes the balance springs would slip off the "shoe" slide designed to connect the balance and sash together. When the balance slips off, it means a service call and the window being inoperable because only one side is being lifted. With every window of ours, the balances are held firmly in place with a retaining clip that once snapped into position locks the balance in place for life. You'll never need a service engineer to make adjustments because the balances have become detached.
7. Balances These are what make your sash windows work - just as the weights did in the original windows. Originally, on timber windows, the weight of the glass and sash was counterbalanced by a lead weight on the end of the cord. This meant that wooden windows would be easy to open (when not painted shut) and remain in the position required because the sash was the equal to the lead weights and so counter balanced. Little or no effort was necessary to move the sash because there is no friction between the sash and the frame, that’s why they were often drafty and rattled. When being tested for a Post Office Counters project they exceeded 50,000 cycles or simulated 68 years life expectancy if opened twice a day (actually they switched off the machine after 180,000 cycles!). Individually manufactured in 0.5kg increments (1lb), and tailored for perfect lengths, these balances have two springs; one wound clockwise, the other anti clockwise. So as a sash is opened, one spring is getting longer and the other compressing, getting shorter, counterbalancing each other for their entire life. This means they are incredibly reliable.
8. Brush Pile with Central Fin (draught proofing) Again, nothing standard about the brush piles being used. Our window even has a brush pile with a special central plastic strip, designed to retain its shape far longer than less costly piles, and increase the resistance to draughts by 30% extra.
Other features include; Trickle vents Chamfered sash Deep bottom rails Foam baffles Furniture colours including antique gold/brass, Pewter, Chrome and White Georgi clips Limit stops Pole eye & scroll handles Reinforcing Tilt release mechanics and latches Cill pads Warning labels

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