Sash Windows in London

DM Window Solutions is one of London’s leading manufacturers of sash windows. We offer a wide variety of products, such as traditional sash windows as well as box sash windows, made from wood and other materials. As a trusted London company, we provide our clients with products of the finest quality, crafted with an expert level of craftsmanship.

In our windows, we use the finest technologies to bring together the best characteristics of traditional windows designs and combine them with modern solutions. Our windows come in spring and lead-balanced varieties. Regardless of the options you choose, all of the products prepared by our London company are manufactured using only the best softwood and hardwood from sustainable sources. The unique design of our timber sash or casement windows allows us to achieve a highly elegant, traditional style that still utilises incredible, innovative technological solutions.

Among those solutions are:
– draught-proofing,
– Secured by Design fasteners,
– Angel Ventlock®.

They make them very safe and at the same time efficient in terms of heat exchange.

The best thing about the sash windows that we do at DM Windows is that they are NOT at all different to those back in Victorian and Georgian times. Well, not on the outside, to be precise. Of course, standards regarding performance, thermal efficiency, glass units, treatment for timber and security – they all changed. The funny thing is though that all of those could be innovated, improved and developed depending on the need and the law requirements but these are things that can remain hidden, so to speak. However, none of it changed the immortal looks of the traditional sash window one iota. This is the mark of an ingenious design – one can improve the whole thing without actually changing a thing!

Lead Balance Sash Box Window

Centuries of using the lead balance sash box windows have done nothing to dent the popularity of this type of windows in the UK. If we think about it for a minute, a lot of things went out of fashion since the 17th century. Yet, not the sash box window with pulleys! This phenomenal success story is due to many excellent qualities of the sash window such as the best possibly suited design for the British weather, finely adjustable ventilation with little probability of rain getting inside and appealing aesthetics. By the 18th century, they became exceedingly popular throughout the whole Britain Empire – virtually everyone wanted to have glazed sash windows, from cottages to palaces. Dwellings architecture has changed dramatically since then, but the sash windows are still immensely popular. They simply refuse to die! There seems to be some confusion in historical documents around where the sash box windows, as we know them, were actually invented – in Holland or in Britain. The uncontested fact seemed to be, nonetheless, that they were definitely developed and innovated by the British. The main fact is that now we have the top-one-nation-most-favourite-window-of-all-times, may it live forever!

Features

Our timber sash windows are manufactured from the highest quality of timber and being constantly improved and innovated. Moreover, they can be tailor-made to suit any configuration. They can accommodate single, slim-line or double glazing to help meet the requirements of architects, planners, contractors and individual customers alike. Using classic design and solid craftsmanship, our manufacturers create bespoke vertical sliding sash windows to match the original design in order to retain the period character of your house. Each of our traditional windows is made to fit the original opening exactly, to provide a timeless elegance and sophisticated finish. Unique draught-proofing in our sash windows overcomes the old problem of cold draughts associated with sliding sashes, thus maximizing heat retention.

What makes our products and services to stand out from the crowd?

The answer comes from us as well as from our customers, among them architects and developers.
It’s the unique combination of the highest quality with the lowest market price.
The vast majority of our new clients were forwarded to us by our existing happy clients.
With our dedicated approach to replacement of windows, it is no wonder!
It is likely that your existing sash windows are an intrinsic part of the aesthetic appeal of your home.

That is why DM Windows can help you to carefully consider if you should replace them.
We would give you all the pros & cons based on our expertise and years of experience so you can be in a position of making a well-informed decision on your own. We have dedicated teams of expert joiners in our workshop and installers at hand, who are pools of talent, enthusiasm and knowledge. All our sash windows are bespoke, which means that we can make an exact like-for-like copy of your existing windows. No project is too big or too small for us! Whether you are coming to us with one window or a hundred to be replaced, we are going to supply you with exactly same top notch quality and treat you with respect. The key to our popularity is the ability to understand and empathise with our customers’ tastes & expectations, awareness of timescales & budget and flexibility in negotiations on the scope of the projects. We are a maker of happy homeowners! They are proud of their homes having our beautiful and impressive windows. Usually, the relationships we have with our customers last for years. They are very attached to our windows, our fitting crew and our excellent customer service from the office-based team.
A typical sash box window with lead balances consists of a number of individual boxed frames constructed in one or more moveable sections of window that slide over each other by the use of lead counterweights and chords.

Standard Specification

– High quality operating system of weights, cords and pulleys.
– Timber: Softwood (European Redwood) with a hardwood sill as standard.
– Other hardwood options available: European Oak or Red Meranti from Malesia.
– Only engineered (laminated) wood used to advance the quality, durability & performance.
– Timber harvested only in sustainable and certified forests.
– Fully factory finished with 3 microporous coatings applied on an anti-rotting & anti-fungi primer.
– Spray-painted with Remmers typically to RAL 9003 or to client’s specification.
– Any colour from the RAL Palette is available with us.
– Alternative options available on request, such as: acoustic upgrade, solar-reflective & solar-control glass.
– Double glazing: standard, safety or double-safety glass depending on the requirements to meet Part L.
– Sample glass spec – Safety: 4mm/16Argon/4mm Toughened (ESG4) Low E with Warm Edge Spacer Bar. U-Value 1.1W/m²K
– Achieving excellent U-Value for the whole window, much lower than the standard of 1.6W/m²K required by law.
– Optional for Listed Buildings & Conservation Areas: single or slim-line glazing finished with putty.
– Internally glazed in order to provide a secure anti-burglar solution & easier maintenance.
– Timber parting beads.
– Elegant glazing/Georgian bars.
– Possibility of leaded lights in different configurations.
– Optional: sets of architraves & window boards.
– Secured by Design lockable heritage Fitch sash fastener.
– Ironmongery sash fasteners & sash lifts available in 3 basic colours: Polished Chrome, Satin & Brass.
– Optional restrictors: Angel Ventlock, traditional secure stop bolts and more.
– Fully weather-stripped – 3 different types of seals.
– Optional, but required by law for new build: trickle vents.
– Excellent thermal and acoustic performance.

Spring Balance Sash Window

Spring balance sash box window is a modern alternative to the traditional and immortal sash box window with lead weights, cords and pulleys, which has been around for centuries. A spring sash balance (or a spiral balance) is a pre-tensioned, spring-loaded device used in order to counter-balance an individual sash in a box sash window frame. Such sash balances eliminate the need for sash weights, sash cords and pulleys. As a result, there is no need for a bulky box-section-frame to both sides to hide from view any weights, etc. The in-build reveal in the window opening is therefore made redundant. Slimmer sightlines also mean that the glass area automatically becomes larger, letting more natural light into the building. That is exactly why the sash spring balanced window offers a more economical solution in comparison with its predecessor. It is often used in new build, because an architect would specify flush reveals. Also developers regularly incorporate spring sash windows where the costs need to be competitive but the end result still needs to be historically accurate and look great. Our spring sash window offers specification that ensures that aesthetic, thermal and acoustic requirements for properties are achieved. There are also some variations available. In addition to the usual spring sash window, there is now a new and innovated type, where the springs are covered. In this design, the spring balances on both sides are hidden from view to maintain authentic style of the traditional sash box window. Besides, such solution allows the new sliding sash window to be more in line with the old-style unbeatable aesthetics.

Our flagship product combines authentic style with precision engineering. Our sliding sashes are ideal replacement sash windows if you want to retain your house’s historic charm without windows that rattle or jam.
Using classic design and solid craftsmanship, our manufacturers creates bespoke vertical sliding windows to match the original design in order to retain the period character of your house. Each window is made to fit the original opening exactly, to provide a timeless elegance and sophisticated finish.
Unique draught-proofing in our windows overcomes the old problem of cold draughts associated with sliding sashes, thus maximizing heat retention.
Optional secure and safe ventilation locking as also Secured by Design fasteners are also available on request to our traditional windows.

Standard Specification

– High quality spring balances from Caldwell Hardware Ltd.
– Timber: Softwood (European Redwood) with a hardwood sill as standard.
– Other hardwood options available: European Oak or Red Meranti from Malesia.
– Only engineered (laminated) wood used to advance the quality, durability & performance.
– Timber harvested only in sustainable and certified forests.
– Fully factory finished with 3 microporous coatings applied on an anti-rotting & anti-fungi primer.
– Spray-painted with Remmers typically to RAL 9003 or to client’s specification.
– Any colour from the RAL Palette is available with us.
– Alternative options available on request, such as: acoustic upgrade, solar-reflective & solar-control glass.
– Double glazing: standard, safety or double-safety glass depending on the requirements to meet Part L document.
– Sample glass spec – Standard: 4mm/16 Argon/4mm Low E with Warm Edge Spacer Bar. U-Value 1.0 W/m²K
– Achieving excellent U-Value for the whole window, much lower than the standard of 1.6W/m²K required by law.
– Internally glazed in order to provide a secure anti-burglar solution & easier maintenance.
– Timber parting beads.
– Elegant glazing/Georgian bars.
– Possibility of leaded lights in different configurations.
– Optional: sets of architraves & window boards.
– Secured by Design lockable heritage Fitch sash fastener.
– Ironmongery available in 3 basic colours: Polished Chrome, Satin & Brass.
– Optional restrictors: Angel Ventlock, traditional secure stop bolts and more.
– Fully weather-stripped – 3 different types of seals.
– Optional, but required by law for new build: trickle vents.
– Excellent thermal and acoustic performance.

We are experts

We are experts in manufacturing, supplying and installing traditional English windows on the UK’s market. We can offer you a free of charge, non-obligatory survey and detailed quotation within hours after that. We are famous for providing an excellent standard of service. All our projects have GGFi insurance covers and are FENSA certified.

This is how we would describe the main benefits from having our premium sash windows:

– In the current economic climate of austerity following the 2008 crisis, everyone looks for ways to save money or to invest wisely. Wood is a naturally insulating material. It means that our timber windows help to retain heat within your home, which will in turn lower your household carbon emissions, keep your home wonderfully warm and reduce your fuel bills.
– You can be the proud owner or a more attractive and stylish home thanks to the timeless beauty of our timber windows. Also, properties with timber windows always secure a better value on the market.
– You are going to be more environmentally friendly. Wood as a natural material is automatically more eco-friendly than manmade options such as metal or uPVC. Especially if the wood is sustainably sourced, as is ours, meaning that the trees are being replanted to replace the ones which were cut down to make new windows.
– If properly maintained, timber windows can last a lifetime and very well resist wear and tear. It is not unknown to see around the 150-years-old sash windows! Your wisely spent money will benefit generations to come.

Double Glazed Sash Windows

DM Window Solutions offers a robust selection of double glazed sash windows. Using the latest technology, our double glazed windows help you reduce efficiency cost much more than traditional, single glazed windows, while sacrificing none of the looks and charm of old school sash windows. Our windows are created using materials of the highest quality, including the timber of your choice. You can decide on any aspect of the looks of your windows, from the type of wood, through the colour, to the exact shape. Find out for yourself why this type of window is the most commonly used one in the UK with our amazing double glazed sash windows.

The Finest Quality from DM Window Solutions

With their traditional shape and mechanisms aided with modern technological improvements, sash windows are the style of window found in the UK most commonly. With their classic looks, they are a perfect choice for your home, whether it’s an ultra-modern city flat, or a traditional home in the countryside.

Using the latest technology, we are able to provide you with double glazing for your sash windows, which lets us use two layers of glazing without adding thickness to the glass. Thanks to this, our windows become more energy-efficient, with an increase in efficiency up to 30%. Simply by choosing our windows, you can greatly decrease your energy cost, which is especially crucial in heating months. Our double glazed sash windows are very discreet and easy to maintain, letting you preserve their charm with no hassle.

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