Timber Windows has developed the country’s finest network of specialist, local showrooms dedicated to the supply and correct installation of beautiful timber windows and doors.

We are passionate about the difference that real wood can make to your home; our suite of products has lead the market in the breadth of application, uniqueness of design, quality of construction and performance in use.

Installing well-made, well-specified timber windows and doors can really enhance the beauty and value of your home.

Please visit one of our specialist local showrooms, and we look forward to working with you on your exciting project!

Tatra Glass was formed in 1990 specifically to import antique stained glass, glass bullions and glass rondels (or glass roundels) from Poland.

We now have a stock holding of over 6000 square metres of stained glass, consisting of over 160 stained glass colours, 30,000 glass rondels and 500 glass bullions.

A glazing division, Quorn Glass, was formed in 1992, which in 1994-1995 re-glazed over 2000 square metres of clear antique restoration glass in Somerset House, London.

New premises were purchased in 1999 together with a glazing company in Loughborough, and our glazing division is now known as Quorn and Loughborough Glass. We also became a member of the Glass and Glazing Federation.

We now have a stained glass factory of over 10,000 square feet, with a large stained glass showroom displaying the full range of antique glass, coloured glass and stained glass for customers or architects to view.

We also stock Schott heritage range of glass and can provide heritage double glazed units – please look at our Restoration page for details.

The Sash Window WorkshopWhich? Trusted Trader of the Month Nov 2021 specialise in manufacturing, installing and repairing timber windows and doors across London and the South. Our employees are experts in their fields and will provide you with high quality, thermally efficient windows and doors that will work perfectly.

Our History - The Sash Window Workshop was founded in 1994 by our Managing Director, Richard Dollar. The company started trading in a converted pig shed in Ascot, Berkshire.

Today we are still an independently run company. However, we now operate from two purpose designed workshops in Bracknell, Berkshire and employ around 70 members of staff.

We have experience working on a wide range of properties, from small flats to prestigious buildings, including Buckingham Palace and The Admiralty Buildings.

Our Goal - We believe that windows and doors are an important feature in any home and that they must not only be as energy efficient as possible, but also be in keeping with the architectural style of the building. Our goal is to ensure that they enhance the look, feel and value of your property.

Whether you are looking to draught seal a couple of windows in your home, or working on a large project to replace multiple windows and doors, we recognise the importance of providing a tailor made solution to suit your requirements.

Customer Service - Customer service is very important to us. We value and rely on customer recommendations for much of our new business. We are proud to be able to offer our customers extensive knowledge and experience in the timber window and door industry, combined with excellence in the delivery of both products and service.

We understand that your requirements are unique and have set ourselves service standards to ensure that we meet your precise needs. Our aim is to ensure that you will want to recommend us to others! We are therefore proud that over half our orders come from existing customers and recommendations.

Selectaglaze is particularly passionate about the importance of retaining the finest examples of our architectural heritage through the listing process. But preserving a past does require sensitive interventions that enable the buildings to meet the changing needs of owners and ensure a sustainable future.

How does secondary glazing help windows in heritage and Listed buildings? - Windows generally have thermally inefficient single glazing and draughty, ill-fitting frames that provide little security and poor acoustic performance. With the thoughtful retrofitting of discreet secondary glazing, all these performance elements can be improved.

Can secondary glazing be used in Listed and historic buildings? - The various national heritage bodies have responsibility for managing the historic environment, so will advise local planning authorities and government departments on development proposals that can significantly affect Listed buildings or conservation areas. In most cases secondary glazing is fully accepted by Conservation Officers as a reversible adaptation i.e it can be removed, if required, at a later date with almost no impact on the original fabric of the building apart from repair of fixing holes and some redecoration. When designed carefully the original windows remain unaltered and aesthetically uncompromised.

It is often asked if secondary glazing will help with condensation and various other questions.

Do I need Listed Building Consent for secondary glazing? - Listed Building Consent is required for any alterations that would affect an area of historic significance and it is a criminal offence to carry out these works without consent. If you wish to carry out any work on a Listed building you will require Listed Building Consent through your local authority. If the building is in a conservation area, then advice should be obtained from a Conservation Officer at your local planning authority.For further details please check the planning portal

Listed Building Consent Assistance - Selectaglaze has a wealth of experience in providing secondary glazing for Listed buildings and helps by offering:

The widest available selection of frame styles allowing sympathetic designs to be developed for windows of all shapes and sizes
Bespoke joinery sub frames where required to provide discreet interfaces with surrounding structure
Frames that can be finished in almost any colour to closely match the existing decor

Selectaglaze can assist with preparation of a consent application for a fee. All windows are surveyed, and drawings prepared to accompany the application but no guarantee can be given on consent.

Founded in 1902, we are the longest established, largest and most successful Patent Glazing Company in the UK, thereby making us the recognised market leaders in this field.

We remain dedicated specialists in the design, manufacture and installation of Roof Patent Glazing systems, Skylights and Lanterns for contracts anywhere in the UK.

Our highly experienced and directly employed fixing staff has installed millions of square metres of Patent Glazing throughout the decades and examples of our finished work can be seen on many of today's prestigious buildings, Railway Stations and shopping centres.

With more than a century of experience behind us, we have the expertise and resources to carry out the most demanding and largest patent glazing projects in the UK.

Steel Window Service, a member of the Steel Window Association, has been in the industry since 1951 and is recognised as a leading company specialising in the design, supply and fix, servicing, repair and replacement of steel windows.

Experienced in carrying out contracts of all sizes in the commercial and domestic sector, we offer a full advisory and project management service directly to the public local authorities, property management companies, housing associations, architects and main contractor builders.

With a comprehensive quality assurance system in place, the directors have addressed health and safety issues and our teams of directly employed fixers are all experienced skilled workers who have been with the company for many years.


Our Windows - The modern steel window is galvanised for positive rust-proofing, and with a durable and attractive polyester powder coating, provides a long-lasting product with low-cost maintenance.

The large range of SMW, SMW+, W20, W30, W40 and fire rated steel window and door products we offer, allow versatility of design and enables us to offer replica replacement windows of an exact match in historic and listed buildings, as well as offering far greater levels of thermal and acoustic insulation to meet the ever-increasing demands of the UK Building Regulations.

The introduction of double and triple glazing units to our ranges, up to 28mm thick, has not affected the slender elegant sightlines that are synonymous with mild steel windows, as well as the well-proven values of inherent strength, fire resistance, maximum security and resistance to vandalism.

As an alternative to sometimes costly replacement, we also offer a complete overhaul, upgrade and repair service. Steel windows and doors can be made entirely operable and draught free by servicing - a process of oiling, easing and adjusting the opening frames, removing excess paint and straightening if necessary, to ensure correct closure. Security locks and trickle ventilators can be supplied and fixed. Full draught-proofing services are offered. Fittings can be tightened, re-fixed or replaced to match where necessary and panes re-glazed.

Should the buildings in your care require repair or replacement work one of our experienced estimator surveyors would be glad to meet you on-site to discuss particular requirements and offer technical advice.

Design - Our expert team using CAD systems are able to offer a full technical service ensuring the best possible design solution for the discerning client.

We produce full working drawings to provide an 'as built' view of proposed windows as well as full-size sectional details for your approval prior to manufacture on all contracts.

Project Management - Individual projects are assigned a personal project manager to handle the assignment from conception to completion. Close site supervision ensures successful installation by our directly employed teams of experienced CSCS certified operatives.

Storm Windows is a family-run company, with 20 years’ experience specialising in the manufacture and installation of custom-made secondary glazing for historic, period and listed properties nationwide.

Our skilled team are trusted by conservationists, architects and homeowners across the UK to help preserve original and feature windows, however unusual or out of shape they may be.

Our glazing will ensure you reap the rewards of modern glazing with a warmer, quieter and more energy efficient home whilst preserving the character of your property.

We recognise the increasing pressure on listed property owners to meet tighter planning regulations, along with ever-increasing conservation regulations and requirements, which is why our secondary glazing is even more important.

Our talented team of craftmen manufacture each individual product and we are able to make units which are out-of-square, shaped, arched or curved, and suitable for many different types of windows, including sash, casement and York sliders.

We aim to continue to evolve secondary glazing to be an integral part of your historic property whilst conserving the character of your home.

Sash Repairs Limited is a small specialist sash window repair and restoration company based in North West London. We believe that traditional sash windows are one of the most important features of a home. In particular, they add character and charm. Importantly they keep the architectural design of Edwardian, Victorian and Georgian style buildings throughout London.

Sash windows in need of repair look run down due to poor maintenance. Sadly they can bring down the overall appearance of a property, making it seem uninviting. This is where we can help. At Sash Repairs we offer all sash window services.
Sash Window Restoration

This includes simple repairs right through to a full overhaul. We can also fit our discrete draught proofing system. We specialise in tailoring each job to your individual needs and budget. Our company is well established with an impressive client list.
East India Club

We have over 15 years experience in renovating and repairing timber box sash windows. From your initial enquiry right through to the completion of works, we provide the highest standard of customer service. We deal with every step of the process professionally and swiftly. At Sash Repairs we only employ fully qualified carpenters and joiners with many years of experience working within the sash window industry.

To put your mind at rest we are also happy to supply references as testament to our workmanship, along with copies of qualifications achieved by the individual Sash Window installer who will carry out the work at your property.

Sash Repairs covers all London postcodes and would be delighted to give advice and a no obligation quote for the repair, restoration and draught proofing of single or double glazed traditional sliding sash windows.

London Sash Window Company - The concept behind Refurb-a-Sash is to offer an affordable alternative to replacing period Victorian sash windows with unsightly & inappropriate modern and uPVC replacements.

Our sash window company was formed in 1992 and we began doing exactly as our name suggests. We provide solutions to common problems such as rattles, draughts, broken cords and poor security for period sash windows throughout London.

Sash windows in London from award winning Refurb-a-Sash Ltd, a local specialist London sash window company who provide replacements and refurbishments for single and double glazed windows. Refurb-a-Sash Ltd are Certass accredited and have been providing timber sash window repairs and installations in West London and local areas for 30 years. Our comprehensive repair and replacement services include traditional wooden / timber sash windows, casement windows and French doors.

London Sash Window Company ShowroomWe cover most local areas including all of South West and West London (plus parts of Surrey and Middlesex – so do ask) and offer expert services for …

– Installation of new sash windows and draught / sound proofing of existing timber windows.
– Full or part replacement sash windows (traditional and modern)
– Original box sash window replacements or repairs.
– Noise reduction / soundproof windows with acoustic glass & the best advice for listed building owners.

Our modern single and double glazed sash windows, casement windows and french doors are manufactured in London by our expert, fully trained and experienced team of craftsmen. We faithfully replicate original features using traditional joinery methods with all selected timber being preservative treated and hand prepared, and the wooden window frames are then spray paint finished. With plenty of five star reviews and testimonials, we truly are one of the best sash window companies in London.

The London Crown Glass Company specialises in high quality conservation glasses selected from the best of the traditional European craftsman glassblowers.

If you study the facade of any fine, old building you will see at once that original window glass is very special. Old glass distorts the image, reflects, sparkles and flashes in the light to produce an unique, pleasurable and quite fascinating effect.

These reflective qualities add greatly to the personality of old buildings.

Before 1900 most glass was handblown and as a result it was impossible to achieve a perfectly flat product. However skilled the blower, his glass contained some blemishes such as "ream", a small wave or fold in the glass, and "seeds", small air bubbles.

These imperfections are the true characteristics of handblown glass.

For the past forty years the float glass process has resulted in a perfect product whose uniform reflective capacity, when used in a period building, robs it of its personality and sparkle.

It is most important, therefore, when restoring period windows that you choose the correct glass.

Within our range there are products suitable for all types of building, dating from the reign of Elizabeth the First to that of George the Fifth.

The London Crown Glass Company is a family business founded by Christopher Salmond, whose family have supplied window glass for four generations from the early nineteenth century. He is available to identify and list original period window glass for clients and to advise on the most authentic handblown glass where replacement is necessary.

The list below shows a few of the major listed buildings, where London Crown glass is glazed

Chris Wood, formerly of Mumford & Wood, acquired Lomax + Wood Limited following a buyout of his partners to become sole shareholder in October 2014. After joining the company in June 2013 the company has gone through major changes including rebranding, a new website, technical IT system, the upgrading of product designs and a broadening of the overall quality timber window and door offer. The company, under its former brand of Ambass-A-Door, was established in 1994 as a wooden sash window specialist. Now Lomax + Wood offer a full and comprehensive range, including aluminium clad timber windows and doors or alternatively aluminium composite windows and doors.

The Wood family, through Dennis Wood who worked in partnership with Derek Mumford and formed Mumford & Wood, have designed and supplied quality timber windows and doors for over sixty years. Although the Mumford and Wood business partnership between these distinguished gentlemen is no more, Chris Wood who was the MD at Mumford and Wood carries on the tradition through Lomax+Wood.

Lomax+Wood supplies made-to-order timber sash windows, casements and wooden doors to commercial and private customers based on classic heritage and contemporary designs. All the ranges of these stylish, high-performance timber windows and wooden doors are designed in house and are manufactured to suit your requirements. With a wealth of knowledge and experience, Lomax+Wood would be delighted to help you with your fenestration requirements. Contact us for your quotation today and the level of service will be tailored to suit your requirements.

Kierson Sash Window and Timber Restoration has over 30 years experience in the repair and preservation of wood. The company specialises in the restoration of timber windows and all timber architectural features including doors, columns, conservatories, orangeries, corbels.

Kierson understands the need to incorporate modern advances into historic properties but it does this without signifcantly altering the appearance. Kierson repairs, draughtproofs and generally overhauls and upgrades all timber casement and sash windows.

Kierson provides excellent customer service, undertaking each project in a sympathetic manner and tailoring its work to each individual client's requirements. All operatives are fully trained to use a very high quality repair system which incorporates modern technology and traditional repair methods. Kierson is happy to work alongside architects, conservation officers and private individuals.

Histoglass is widely recognised as the market leader in quality, efficacy and reliability when it comes to replacement glazing for period properties. We have an untarnished reputation thanks to our superb products and unfailing commitment to client service.

Established in 2007, Histoglass has exclusive UK distribution rights to a range of outstanding glazing products which are precision-engineered in Germany by a 60-year-old family firm. We’re proud to have a high-profile national and international client base, extending from private residences to nationally significant Grade-I and Grade-II listed buildings.

Our connections - We’re well-known among architects’ practices and large construction firms. We also deal direct with some major property owners including iconic country estates, royal palaces, famous colleges, and the National Trust and English Heritage.

Beware of imitations - Imitation is said to be the sincerest form of flattery – and we’re very flattered that a number of companies, such as Slimlite, Timbalite and Thin Sealed Units, feel they can offer units similar to ours. However, Histoglass has always been at the forefront of innovation: we offer the thinnest double glazing units on the market; our thin doubled glazing meets all six parts of BSEN-1279; and we’ve introduced MONO Sysyems, pushing the envelope of insulation in historic buildings. With 10 years of unrivalled quality and service under our belt, and a seriously impressive client list, you can be sure we’ll continue to deliver innovative products to the highest possible standards.

A planning advantage? - Thanks to our work with many planning departments, Histoglass projects are often viewed more favourably. Planning officers in some conservation areas even insist on the use of Histoglass.

Spanning two generations, Hawkscroft Ltd has a professional family interest along with a sense of enjoyment and appreciation in the work that we undertake on older buildings and listed properties. We specialise in both conservation window work and contemporary window projects and it is fair to say that we have a vision and passion for this line of interesting and challenging work.

Managing Director Paddy Jones has worked in the window industry for over 15 years and has extensive experience in the area of conservation works and bespoke contemporary projects. Our team includes experienced and industry qualified carpenters and glaziers with the necessary experience to survey, manage and oversee site works. Paddy brings specialist glazing skills which include lead (lattice) window making, stained glass work and conservation practices. Father Toby Jones has over four decades of experience working with Listed and Historic Buildings and continues to run a traditional building (sister) company, established in 1990, which specialises in conservation, restoration and renovation works.

Hawkscroft Ltd is truly a family business which includes Phoebe Jones involved in office management, Diana Jones in administration, Sara Jones in the field of design and hand painted replacement stained glass and Kipper the border terrier holds the position of security operative (and of course breaker of many hearts).

Hawkscroft Ltd have undertaken a variety of conservation and new contract work in Warwickshire, Gloucestershire, Oxfordshire and the surrounding area for a number valued clients notably Shakespeare’s Birthplace Trust on the Birthplace Building, Ann Hathaway’s Cottage, Mary Arden’s Farm, Hall’s Croft and New place buildings along with a large contract for Spitfire Bespoke Homes on their flagship Haseley Manor project near Warwick. Hawkscroft Ltd has also completed project work for award winning architects 'Design Storey', completed many more bespoke projects for private clients and worked on numerous churches, historic buildings and listed properties.

Lamberts-Glass is glass with a soul. We are the only manufacturer in Germany who still uses traditional methods to produce window glass: Mouth-blown glass is worked into flat panels in a complex procedure. We even manufacture coloured glass, so-called ‘streaky glass’ or ‘flashed glass’, by hand.

Our manufacturing methods result in glass with a specific structure, making it particularly suitable for use in historic preservation or glass art. Whether it’s the magnificent windows of the Dresdner Frauenkirche or modern glass artworks in the Rockefeller Centre - Lamberts Glass adds a special touch to old and new buildings alike.

Craft Glass Ltd :- We are a traditional glazing Company that have been manufacturing new traditional leaded lights, restoring existing leaded lights and restoring metal windows and flat iron casements for over 30 years.

We can refurbish just about any type of window or glass panel but our particular area of expertise is leaded lights and metal, or crittall windows, Craft glass can also restore your decorative glass panels and fix broken windows.

Working with contractors on large projects or with private clients on residential properties we take care to preserve the windows that you care about.

Most of the window restoration projects that Craft Glass carry out involve Grade I and Grade II listed properties but plenty of projects involved working with customers who simply just love slim window sight lines or the traditional old leaded light look and want to create features of windows at their property which can’t be replicated with modern style windows.

Old rusty metal windows / crittall windows, flat iron casements are just some of the terminology used, but all metal windows can be restored and outlast the new products available.

Founded almost 200 years ago, Crittall Windows is the worlds’ leading manufacturer of steel windows. We have a proud history of delivering excellence and our core values of trust, honesty, and respect still remain true today. Using cutting edge design and manufacturing expertise we are unparalleled in our engineering and production capacity. We offer the widest range of hot rolled steel window profiles which allow us to respond to individual project requirements and offer maximum custom capacity.

Crittall are specified for historic and refurbishment projects, replicating and replacing architecturally significant metal windows. We manufacture and supply for new build projects for contemporary, commercial and residential buildings designed by some of today’s foremost architects, working with architects and contractors around the globe.

At Clement we are experts in steel window fenestration. We offer residential clients and building professionals a choice of high quality steel windows, doors and screens, tailor-made to your specific requirements, together with a popular collection of conservation rooflights.

We provide a complete service – from the provision of technical drawings through to manufacture, installation and after sales support – whether your project is a traditional restoration project, one involving Listed Buildings or Conservation Areas, or a new build. We specialise in replacement windows for heritage projects, yet our windows are the solution for most schemes where metal windows are required.

Our previous work includes prestigious steel window projects across the UK and in the USA and our range of rooflights, which are available from stock, are popular in several European countries. We are delighted that so many of our clients come back to us again and again because they know they will not find a better product anywhere else.

Choose Clement and you will enjoy technologically advanced, low maintenance steel windows which will meet the latest performance requirements for insulation, weatherproofing and security and which will last for many years.

All of our windows are sensitively crafted to the highest standards in our own ISO 9001 approved factory. The process of manufacturing a steel window – from rolling into shape and welding to hot dip galvanising and powder coat painting - is a complex one which takes time and attention to ensure the end product is the standard people have come to expect from Clement.