Sash Windows

Lasting performance & efficiency

Traditional Charm
& Character

Deciding to install double glazed sash windows can come with much trepidation – especially when you are contemplating replacing your original, traditional single glazed windows with new ones. It is a popular misconception that replacing your original sash windows with double glazed replacements means that you are going to lose the charm and character of your property.


Our double glazed windows are specifically designed to match the design of your original windows, providing insulation, and enhancing the efficiency of your home, without sacrificing the unique character you admire. Which is especially important if you live within a conservation area.

We perfectly match the traditional English sash, in which the sash window is operated with a pulley system and weights. A separation bar separates the weights (steel), which move up and down on both sides of the window frame. Spring versions are also available.

Here at Trade Timber Windows & Doors we take pride in the knowledge that we focus on the minor details that others may overlook.


Double Glazed & Draught Proofing

Many original traditional timber sash windows tend to be susceptible to draughts. Despite their ability to keep out the outdoors, sash windows were originally created for a different purpose.


They were designed at a time when fireplaces were the primary source of heat in homes. To keep the fires running, sash windows had to let in some air to allow the fire to draw and burn. Sash window draughts are no longer essential in the homes of today, as most have contemporary central heating installed.

Our modern double-glazed sash windows also reduce dust and noise penetration, which are normally a common occurrence with traditional single glazed sash windows.

Did you know that to ventilate a room, the bottom and upper sashes should be slightly open? Clean, Fresh air is pulled in from the bottom, whilst the warmer, hot air is expelled from the top.


Factory Paint Finished

All our windows and doors, unless specified otherwise, come factory finislhed with four coats of protective paint. Our specialised microporous paint technology not only protects your products, but it allows the timber to breathe, meaning it is more durable and lasts longer.

Why Factory Paint?

  • Reassurance that your windows and doors are installed as a finished product, with complete protection from the elements.
  • You may rest easy knowing that your new investment will be installed properly by our trained professional fitters.
  • A factory-sprayed finish guarantees an even, solid coat.
  • Financial savings from avoiding the need for scaffolding or other access challenges.

Frequently Asked Questions

What are sash windows?

Sash windows are a type of window that is composed of two parts, called “sashes.” The sashes are placed in a frame and slide vertically to open and close the window. Sash windows are typically found in older homes, although they can be used in new construction as well.

How do sash windows work?

Sash windows work by way of a system of weights and pulleys that allow the sashes to be opened and closed with ease. The weights are typically hidden within the frame of the window, and the pulleys allow for a smooth, even movement when opening or closing the window.

What are the benefits of sash windows?

There are several benefits to using sash windows in your home. For one, they provide good ventilation since they can be opened at the top or bottom (or both). Additionally, sash windows can be easily cleaned from the inside since they open outward. Finally, sash windows add a touch of charm and character to any home.

Are there any drawbacks to sash windows?

One potential drawback of sash windows is that they may not be as energy-efficient as other types of windows (such as casement or double-hung). However, this can be mitigated somewhat by adding weather stripping or other insulation around the edges of the window. Additionally, some people find that sash windows can be difficult to open if they are not properly maintained.

How do I maintain my sash windows?

To keep your sash windows functioning properly, it is important to regularly clean and lubricate them. You should also check the cords and pulleys periodically to make sure they are not frayed or broken. If you have difficulty opening or closing your sash windows, it is best to consult a professional for assistance.

Are sash windows energy efficient?

Yes, sash windows can be quite an energy efficient if they are properly installed and maintained. One way to make sure your sash windows are energy efficient is to get ones that are double-glazed. Double-glazed windows have two layers of glass with a space in between them. This space helps to insulate your home from outside temperatures, making it easier to heat and cool your home. Another way to make sure your sash windows are energy efficient is to make sure they are properly sealed. You can do this by checking for gaps around the edges of the window and caulking or weatherstripping them as needed.

Can I replace my existing windows with sash windows?

In most cases, yes – although you may need to make some modifications to your window frames first. If you’re unsure whether or not your existing windows can be replaced with new ones, it’s best to consult with a professional before proceeding with any work.

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