Sliding sash windows, with boxes for the weights, pulleys and cords, and the original design details intact, are just about the most delightful and efficient means of ventilation ever made.

Thanks to twenty years of continuous research and development, the Original Box Sash Window Company has been able to meet the GovernmentÃs new Building Regulations Part L for several years.

Traditional English timber sliding sash windows, which look just like the originals yet meet the new compulsory standards, that is what we supply and install. Each and every job, carried out by the Original Box Sash Window Company, qualifies for official registration.

To view the product technical specifications, CLICK HERE

Why keep windows in this old fashioned style ?

It’s all about original features. We assume that you have bought a character house because you like the style. Well the windows/doors are probably the most important features to keep in the original design to maintain that style. As you can now obtain them with all the modern benefits, it is extremely prudent to keep them.

Why timber ?

Timber is the best material for character, warmth, comfort, durability, window/door construction, looks, practicality, heat retention, need we go on.

Why use hardwood ?

Softwood needs to be treated with chemical preservative. No-one really knows the long term effects of this is a domestic environment. Why take a chance when beautiful hardwood is so readily available from sustainable sources ?

Can they be double-glazed ? Yes, and in keeping with all the original features. CLICK HERE. Will they be secure ? We fit a comprehensive range of high quality British Standard locks. The integral double-glazing makes them extremely difficult to break into. They are also glazed from the inside which means the glazing cannot be removed from the outside. CLICK HERE. Will box sash windows help to maintain the value of my house ? Period and character houses hold their prices better than modern ones. In today’s market, keeping up maintenance in a profession way, and re-placing modern features with ones authentic to the original design, is the way to maximise value. Are these old style windows guaranteed ? Yes, for your lifetime. The first ten years after installation are covered by Lloyds of London insurance (included in the price). CLICK HERE.

Will I have to maintain them ?

Yes, if you want them to last many, many years. But it’s very easy.

Will I have to paint them ?

The paint we use is micro-porous, i.e. it soaks into the timber and lets it breath. You can go over it as many times as you like without scraping or burning off. A full coating once every seven years to ten years, but inspect yearly.

Will replacement windows look the same as the originals ? Yes, right down to the timber mouldings and glazing bars. What if the originals have been removed ? We will look at the neighbouring houses/streets and research what the originals were like. There may be a little extra work in the fitting if the aperture have been altered. Our surveyor can advise CLICK HERE. Can I make the window bigger ? Sometimes, but it will most probably change the balanced look of the side elevation. Ask our surveyor CLICK HERE. Can I clean them easily ? Yes, just like any opening window.

Can I open them easily ? Yes, much more easily than your old ones. Will then be draught-proofed ? Yes. Will I be warmer ? Yes.

How much will it cost ?

It depends on many factors, for example:

The size and type of the window/s that you would like to replace.

The level of service you choose.

The age of your house, and if there are obstacles to overcome by our installers, e.g. structural.

Our surveyor can provide you with a no obligation Best Advice Report and Quotation. To do that he will need to visit the property and go through things with you. This will take an hour or two, depending on the complexity.

If you would like to discuss this with a Surveyor. CLICK HERE.