Sash Windows London

London Sash Window Installation & Repair

Sash Windows London Greater London (SW1): Sash windows provide a sophisticated, period look to any property in London and can improve your home's value with their authentic style and charm. If you need to replace your existing sash windows, the modern equivalents will be every bit as authentic looking as the original windows, and if you live in a listed building, a period property or your home is located in a designated conservation area, sash windows may be your only replacement choice due to local stipulations.

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In some cases a replacement sash window will be hand crafted by your specialist glazing company in London, to make certain they closely fit in with your needs, along with any restrictions with regards to conservation area and listed building status. Using timber from sustainable sources in hard or soft wood varieties, which are renowned for their robustness and anti-rot capabilities, a qualified tradesperson will skillfully fashion your windows. Unless of course, you would prefer the more modern look, with stylish composite, aluminium, uPVC framed sash windows to integrate seamlessly with the style and design of your property in London.

Sash Windows London Greater London (SW1)


Sash windows, unlike casement windows, don't open using a hinge mechanism. Two windows are installed with one, or both, being able to slide up vertically behind the other. To enable the window to be opened by any amount for differing ventilation requirements, counterweights and cords keep the window in place. Whilst contemporary versions of sash windows provide vertical or horizontal movement, together with tilting variants that are easier to clean, the original sash windows just moved in a down or up direction.

Superior room ventilation capabilities is one of the major benefits that sash windows have over their counterparts. You can establish a convection flow of air within your home, with cooler air entering through the bottom gap, and warm air escaping through the top gap, in sash windows where both the top and bottom sash are able to slide. This benefit is particularly useful in hot summer months and helps to increase the levels of personal comfort around your house in London.

Sash Window Fitters London UK (020)

To provide extra peace of mind for any householder in London and prevent any unauthorised opening of your traditional sash windows, security can be increased by adding reinforced or double glazing, threaded bolt screws, locks and stops. Adding a frame to frame sash lock is one of the better kinds of security for a sash window in London. This type of lock involves the use of a bolt or bar which fixes the lower frame to the top sash, preventing the opening of either sash. It enhances security even further by not being able to be accessed from outside by any potential burglars.


If your current sash windows in London have been damaged or no longer work correctly, it is a good time to think of either refurbishing or replacing them before they get worse. A qualified London sash window installer will be happy to offer you advice and guidance on whether it is possible to refurbish your existing windows, or perhaps would be better to exchange them for new sash windows.

If a full refurbishment is the decided plan of action for your current sash windows in London, then for this work to be completed successfully, they will need to be taken out of their frames. It could be as easy as scraping off several layers of paint which have built up over time, or maybe if the window glass is draughty and vibrating, the frame might need tightening in a purpose built jig. You'll probably find that your local sash window contractor in London will offer a survey of your windows to pinpoint any problems, propose solutions, and provide an estimate for the work involved. Whether your sash windows are affected by loose corner joints, broken glass, frayed cords or rotten frames, there's a fairly good chance they can be effectively repaired. Having said that, you must weigh up the advantages and disadvantages in terms of what's doable and what's actually worth doing from a cost viewpoint.

For anybody repairing a damaged sash window or trying to make a new one, there are an array of sash window mouldings available to purchase. This is helpful for small repair jobs because you can purchase the exact parts that you need. Commonly available mouldings include: staff beads, ovolo glass beads, sash bars, glazing bars, parting beads, top & bottom meeting rails, step cills, bottom rails, transom drips, sash stiles and stiles.

Sash Window Quotes in London Greater London


Looking on the internet and in sales catalogues, at all the different types of sash windows which are offered can get quite bewildering for most householders in London. If you just consider the three main designs, specifically: Edwardian, Victorian and Georgian, it will be easier. Each offers their own variations which can be tailored for your property design.

Sash Window Installation Near London Greater London

Georgian - Traditionally comprises six separate panes in the top sash, over six separate panes in the bottom sash, (six over six). The Georgian style can be modified to the Half-Georgian (a single pane in one half, six panes in the other), or a Georgian-variant which can have different sizes of pane in upper and lower, as long as one half of the window numbers six panes.

Victorian - The Victorian sash window is usually a two over two design which may also include a central bar, or variants such as asymmetric (two over three, three over two etc).

Edwardian - A 6 over 2 style that's quite similar in design to a half Georgian.

It is much simpler to ask your your local installation company for their advice on the best style of design to match your home in London.

All of these window patterns can be made for different styles of windows, i.e. bay or coupled windows, and also for any size of window. The Yorkshire Sash is the fourth and final important form of sash window. This model of sash window slides in a horizontal direction, and can incorporate any of the main elements and variants of the other three.

In addition to the many different styles of sash windows, these products are also made out of several different materials to match your personal preferences. The classic sash windows from the 1600s, and for most of the last 400 years were made from timber. Most of today's wooden sash windows are manufactured from sustainable softwoods like Scots pine, redwoods, spruce and Douglas fir, while the early windows were mainly crafted from English oak, of which there was an abundant supply in those days.

The first sash windows made from aluminium made an appearance in the 70s, closely followed by uPVC versions, which became more and more popular in London due mostly to their energy efficiency, durability, high level of security and low-maintenance attributes.

Sash Window Installers London (SW1)


Up until recently, sash windows were made with a single pane of glass. If you live in a listed building or your property is inside a conservation area it might be necessary to replace your sash windows with some having a similar arrangement. Modern advancements permit toughened glass with superior thermal attributes over the original glass, to be employed. This enables you to replace all of your sash windows yet preserve the appearance of the building as a whole.

A specialist sash window installer in London can offer guidance on ways to adhere to local legislation for your area, while offering the best and most cost-effective materials available. When existing materials have to be refurbished, due to requests by your local council or conservation officer, a window by window inspection report may be necessary to minimise any negative impact on the building. A specialist company will able to inspect and prepare the report together with any technical drawings, required by the planning officer, including full details of your restoration scheme, and whether any replacement work is required.

Through the installation of secondary glazing you might be able to do an upgrade on your sash windows in London. This will allow you to prevent condensation, reduce noise transmission and improve your thermal efficiency by adding a vertical sliding secondary glazed panel to the inside of your sash window. Secondary glazing solutions are an effective way to upgrade your sash windows, whilst still retaining the integrity and authentic character of the structure. And even where you're limited by planning restrictions, as in the case of a listed building, this can still normally be accomplished.


There are several contractors in the London area, who can supply you with a sash window installation which will last a lifetime. Where possible, you should ask relatives and friends for recommendations of window fitters in London. From the prospective contractors, see if you can get at least 3 different estimates. Any installation company that's a signed up member of the GGF (Glass and Glazing Federation), FENSA (the Fenestration Self-Assessment Scheme) or the Glazing Arbitration Scheme (TGAS), will reassure you of their skills and proficiency in sash window and glazing installation and renovations. Membership of these leading organisations in the glazing trade also provides insurance in the event of shoddy workmanship, and a means of finding mediation in case of legal proceeding due to defective products or poor craftsmanship.

Book a Sash Window in London UK

Sash windows can be installed in London and also in nearby places like: Camden, Havering, Hackney, Southwark, Belgravia, Shepherds Bush, Mayfair, St James's, Churchill Gardens, Waterloo, Waltham Forest, Pimlico, Covent Garden, Brent, Haringey, Vauxhall, Knightsbridge, Islington, Whitehall, Kensington, Victoria, as well as in these postcodes NW1 5HN, NW1 4QH, NW1 5HF, NW1 5BN, NW1 5DR, NW1 5BB, NW1 5AA, NW1 5EA, NW1 5GD, and NW1 5AJ. Local London sash window installers will likely have the postcode SW1 and the telephone dialling code 020. Checking this should make certain that you access local providers of sash windows. London home and business owners are able to benefit from these and numerous other comparable services. Click the "Quote" banner to obtain sash window installation quotations.

Sash Window Trickle Vents London

If you've got sash windows fitted in your home or office in London, you need to make certain that each room has good ventilation. Many homeowners appear to forget ventilation in favour of improving insulation and keeping heat in, however it's imperative if such issues as black mould, damp penetration and condensation are to be avoided.

One method that you can use to increase ventilation is to install trickle vents, then you'll no longer need to keep opening your windows to get that much needed airflow. These handy little vents often come as standard with uPVC windows, but if your sash windows made from wood or some alternative material, you might need to bring in a specialist to put some in.

Using the principle that cold air falls (while hot air rises), trickle vents are fitted to the head of a sash window, and as air enters from outside it "trickles" vertically downwards when entering the room and cools the glass surfaces inside, thereby reducing condensation and related problems.

So that you don't detract from the clean, smooth lines of your windows, you should try to get low-profile and flush fitting trickle vents where possible. These will look much tidier when fitted and are not so obtrusive as some trickle vent designs on the market.

Sash Window Mouldings London

There is a wide range of sash window mouldings available to buy for any homeowner mending a damaged sash window or trying to make a replacement one. When smallish repairs are needed, this is particularly useful, as you can just purchase the exact parts that are necessary for the task in hand, and you won't need to obtain a whole window. Sash window mouldings that are widely available include: staff beads, ovolo glass beads, sash bars, glazing bars, parting beads, top & bottom meeting rails, step cills, bottom rails, transom drips, sash stiles and stiles.

A quick online search for "sash window mouldings" or a similar phrase, will reveal a few potential suppliers, with both softwood and hardwood variants available in meranti, pine, American white oak, sapele, and possibly other timber varieties. You won't usually be able to buy these sorts of mouldings at your local B&Q or DIY superstore, since they are fairly specialist products. (Tags: Window Mouldings London, Softwood Window Mouldings London, Hardwood Sash Mouldings London, Sash Window Mouldings London).

Sash Window Repair London

Traditional timber sash windows can get pretty scruffy if they are neglected and not correctly maintained over time. The fact that your sash windows are draughty, decaying and rattling and letting in water, may not actually be down to you, because they could have been in poor condition for years before you even bought your property in London.

A fleeting look at these windows won't often reveal the enormity of the problem, and most householders would not even give it a second thought, but you can be assured that there are countless numbers of sash windows out there just waiting to be repaired. For this sort of work you need a sash window specialist who knows exactly what they're doing, and it shouldn't be done by any ordinary carpenter or odd job man.

Unless your wooden sash windows have clearly been neglected since time immemorial, they can generally be mended with a bit of hard work and effort, so if you call somebody in to inspect them and all you get is a sharp intake or breath and an overt attempt to sell you replacement windows (easier and more profitable for them), you must show them the door and keep on looking.

A genuine craftsman will carry out a thorough inspection of your sash windows, providing you with a detailed report of what needs to be replaced, what can be refurbished, and all the possible solutions. So you are in a position to make an educated decision about how you want to proceed, they will also give you an itemised quotation. Some common repairs include such things as:

  • Stile replacement
  • Draughtproofing
  • Sash replacement
  • The replacement of rotting timber
  • Minor repairs & repainting
  • Sill replacement
  • Furniture replacement
  • Sill splicing
  • The replacement of pulleys & sash cords
  • The addition of double-glazed panels

(Tags: Sash Window Repair London, Window Sash Repair London, Sash Window Maintenance London, Sash Window Repairs London).

uPVC Sash Windows London

For 400 years or more sash windows have been widely used London homes. Throughout the UK there are still surviving examples of sash windows from the late 17th Century. The traditional material for making sash windows is timber and it's only in recent decades that alternative materials have been used in their construction. In all areas of construction oak was the timber of choice, but as well as oak, ash was also regularly used for building these windows. When looked after properly these hardwoods are durable, strong and guaranteed to survive for many years.

However, in these environmentally aware times hardwoods are expensive and their use is the major cause of deforestation around the world. Timber nowadays is supposedly meant to come from wholly sustainable sources, yet according to recent estimates it is believed that around 60 percent of tropical hardwood arriving in the UK comes from countries where illegal logging is endemic.

Because of such issues, today's sash windows are mostly produced from faster growing softwoods, such as Baltic pine, European redwood and deal. Softwoods tend to come from sustainable sources, and are much cheaper than hardwoods. The downside with softwood is that it does not last as long as hardwood, and needs more regular maintenance and treatments.

Over the last 30-40 years, different materials have been employed in sash window construction. The first uPVC sash windows were introduced in the mid-80s. These were developed to accurately emulate the traditional sash windows, whilst enjoying the added benefits of uPVC. The first uPVC sash windows were mainly made in white, but a whole host of alternative colours have since been added.

These benefits can be gained by installing uPVC sash windows:

  • More secure.
  • Low or no maintenance.
  • A-rated for energy efficiency.
  • No sanding or painting.
  • Can be made to order.
  • Available in wood grain effect.
  • Easy clean characteristics.
  • High weather resistance.

Yorkshire Sliding Sash Windows London

There's a fourth type of sash window which is perhaps not so widely acknowledged as the classic Georgian, Victorian and Edwardian designs, and this is termed the "Yorkshire Sliding Sash Window" or "Yorkshire Slider". Some folks refer to this pattern as the "Horizontal Sliding Sash Window", because it accurately describes the mechanics of this window, with its sashes sliding from side to side (horizontally), contrary to the other designs which all slide vertically (up and down). Thought to have originated from North Yorkshire, these windows are usually seen in period cottages and other attractive listed buildings. (Tags: Horizontal Sliding Sash Windows London, Yorkshire Sash Windows London, Yorkshire Sliders London).

London Sash Window Maintenance

The best time to carry out sash window maintenance is in the spring. Once the window frames have healed from the winter, they should be oiled and beeswaxed. You should also clean and lubricate the pulleys and locks. In addition, you should inspect and repair any visible signs of damage.

During the maintenance process, the upper sash should be lowered six inches from the top of the frame. This prevents damage to the window hardware. Then, release the locking tabs. Once the upper sash is in its lowest position, it may be rested on top of the lower sash. When this procedure is completed, the sash pins should be reinserted into the window clutches and the locking tabs should click into the grooves.

Another important part of sash window maintenance is to check the weather-stripping. If it's cracked or scuffed, it's time to replace it. You may also notice signs of mildew, water leakage or mould. You should also check the window screens for damage. During the winter, they may get damaged by snow and ice. Therefore, it's best to remove the screens during winter to extend their life.

You should also clean the window and apply a wood hardener if necessary. The sash window is prone to rot if it's not treated. Rot can weaken the window's structural integrity and lead to leaks. To fix this, clean the affected area thoroughly and apply a wood hardener or oil. If the damage is extensive, you may need to replace the entire sash. While it is possible to do sash window maintenance yourself, you should seek the help of a professional if you're uncertain of the process. Get in touch with your local sash window installers in London for advice and help.

Sash Cord Replacement London

Sash Cord Replacement London

The replacement of sah window cords is a crucial maintenance task to restore the functionality of classic sash windows. Over time, the cords that hold the sashes in place may snap or wear down, causing the windows to become difficult to operate. To ensure easy and smooth sliding of the sashes, an experienced professional can replace the worn-out cords with new, durable ones, remedying this issue. Homeowners in London can preserve the authenticity and charm of their historical properties, enjoying fully functional and operational windows, through investing in sash window cord replacement. Sash window installers in London will replace any faulty sash cords in your home, and soon your windows will be running smoothly once again. (20473 - Sash Window Cord Replacement in London)

Sash Window Related Tasks

Sash Window Related Tasks London

There are a wide array of tasks that can be carried out by your local London sash window specialist including the installation of sash windows, sash window cord replacement, cheap sash windows, sash window mouldings, mock sash window installation, double glazing sash windows London, double-glazed sash windows, locks for sash windows London, Georgian sash window installations, sash bay windows, sash window glazing, Georgian sash windows London, the maintenance of sah windows, sash windows not closing, sash and case window installation, sash window repair, bespoke sash window installation in London, sash window quotations, sash window installations, sash window restoration, sash window replacement, sash window beading, secondary glazing, Edwardian sash windows in London, sash window condensation problems, sash window soundproofing, wooden sash windows London, flush sash window installations in London, sash window maintenance, sash window stops, and more. If there happen to be other London sash window requirements that you need but cannot see here, you should list them on the QUOTE FORM provided. Listed are just a selection of the tasks that are conducted by those installing sash windows. London providers will be delighted to keep you abreast of their full range of window installation services.


Sash Windows Near London

Also find: Islington sash windows, Hackney sash windows, Knightsbridge sash windows, Whitehall sash windows, Belgravia sash windows, Churchill Gardens sash windows, Shepherds Bush sash windows, Mayfair sash windows, Southwark sash windows, Covent Garden sash windows, St James's sash windows, Kensington sash windows, Waterloo sash windows, Waltham Forest sash windows, Havering sash windows, Haringey sash windows, Camden sash windows, Vauxhall sash windows, Brent sash windows, Victoria sash windows, Pimlico sash windows and more. Got problems with your sash windows? Don't panic! You'll find window installation services available across these towns and areas. Home and property owners in the area can get quotes for window installation by going here.

Sash Window Services London

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(This sash windows London content was edited and updated on 22-06-2024)