Dempsey Dyer
II Commercial
Whatever the size of your project, we can provide the high quality windows and doors to match. Efficiency is a priority, and we will ensure that strict budgets and time scales are met.
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Leading UPVC and timber manufacturers
Operating since 1977
Range of Deceuninck, Alunet and Accoya systems
Manufactured in the UK
Sit back, relax, and learn more about Dempsey Dyer – the industry specialists.
Watch nowHere at Dempsey Dyer, we’ve been manufacturing top-quality timber and uPVC windows and doors for the trade for many years. In that time, we’ve built an excellent reputation and relationship with our customers, allowing us to understand what it takes to be the very best and provide installers with exactly what they need.
We’re proud to be many customers’ ‘one-stop shop’ for expertly manufactured windows and doors. With service and products that you can count on, there’s always a reason (or three) to choose Dempsey Dyer. As part of this offering, we often talk to our customers about our ‘good, better, best’ options – for any project, we have the products that will work for you.
In this guide, we’ll take you through our ‘good, better, best’ offering and demonstrate what this means for you – and why you should partner with us for your upcoming projects. With online lead generation tools and innovative window designer software, plus our exceptional product range of windows and doors, there are so many reasons to choose Dempsey Dyer – your one-stop shop for timber and uPVC home improvements!
If you’re looking for market-leading uPVC and timber windows for your next installations, you’ve come to the right here. We manufacture high quality profiles from Deceuninck in a wide range of styles including casement flush sash, mock sash and Stormproof.
Classic casement windows are enduringly popular, boasting a simplicity that suits all kinds of homes and customisation capability to suit any property and express homeowners’ personalities. Plus, with the current and ongoing focus on thermal efficiency, modern casement windows with double glazing are an excellent choice and an effective upgrade on older, outdated profiles.
For a higher-end option, we’ve developed our own Stormproof Windows. These bridge the gap between timber and uPVC, providing a timber-look style coupled with exceptional performance. Stormproof wood-effect windows are a more comprehensive investment that can be further enhanced with a range of hardware options and other accessories to complete the look and further bolster the all-around reliability.
Whether your customers are looking for simplicity done perfectly or a unique design at the top of the market, you can rely on Dempsey Dyer as your one-stop shop for windows to have what you need.
Our range of doors is as comprehensive as our windows, further cementing us as the one-stop shop for door manufacturing in the UK. As customers become more attuned to the wider market and surer of what they’re looking for, our product range has quite rightly expanded to adapt to ensure we offer exactly what people need.
Timber and uPVC doors continue to be popular choices for both modern and traditional homes alike. We offer most configurations in both materials, so whether you’re looking for sliding patio doors, French doors, bifold doors or classic entrance doors, we can help. Work with your customers and us to design a door that’s right for them, in the best material, enhanced with the right hardware, and manufactured to these specifications perfectly.
Composite doors, similarly, have become increasingly popular, combining the performance of uPVC with the look and feel of timber, for the best of both worlds. We offer market-leading composite doors as part of our one-stop shop for doors. So as with our windows, whether you’re looking for something classic or cutting-edge, we can help.
Choose Dempsey Dyer for the doors that you need for your next projects, manufactured to your specifications, to exceed your expectations, every time.
For the best windows and doors on the market, expertly manufactured to suit you, choose Dempsey Dyer. We pride ourselves on having something available for all kinds of projects with our ‘good, better, best’ offering, so we’ll always have what you need. Get in touch with us today to join us and find out more.
With energy efficiency at the forefront of everyone’s minds no matter where they are in the journey – from manufacturers and tradespeople to homeowners – it’s only right that there is a lot of discussion around which type of windows and doors are the most thermally efficient.
One of the most popular types of windows at the moment is aluminium. This material offers a distinctive, striking aesthetic that is ideal for modern homes looking to retain their up to date appeal or even traditional homes looking to bring themselves up to date.
But how does aluminium compare to timber and uPVC as an energy efficient window? It’s one of the products we offer here at Dempsey Dyer, and thermal efficiency is highly important to us, so we want to make sure our installers and homeowners stay educated about its properties to make an informed decision. That’s why we’ve put together this guide on aluminium windows’ thermal efficiency. Read on to find out more.
Several years ago, aluminium windows were not thought to be one of the most energy efficient options on the window market. That’s because, as a material, aluminium has high levels of heat transference. So, once installed, when customers would heat the inside of their homes, the windows would absorb this heat – and its transference properties would pass the warmth to the outside world, so it was lost.
From an energy efficiency perspective, this is far from ideal. If homeowners are spending money and energy heating their homes, the last thing they want is for it to escape – what’s more, frustratingly, with the help of their windows, rather than them stopping it. This leads to lost heat and therefore lost money.
Additionally, aluminium windows’ thermal transference properties led to them expanding in heat. With the profiles changing along with the temperature, the window seals would become damaged, leading to condensation, which is as unsightly as it is unhealthy. Older aluminium windows could even break away from the glass as a result of this expansion, which only exacerbated the issue of them losing heat too!
However, this changed with the development and popularity of a thermal break for aluminium windows.
A thermal break is what has made aluminium windows more viable and more popular as a result. So what is a thermal break? For those who are not aware of what it is or perhaps more likely how it works – put simply, a thermal break separates the inside of the outside from the window.
This means that when one side of the window becomes too hot, there is an extra layer in between that stops the same thing from happening on the other. It’s the same case for the cold, too.
A thermal break is an excellent addition to aluminium windows. With this in place, it reduces the issues that these profiles were facing previously – condensation and heat transference, and therefore extra expensive for customers in all cases. Now, with a thermal break, aluminium windows are as modern in their performance as they are in their aesthetics.
Here at Dempsey Dyer, we are at the forefront of development in the fenestration manufacturing sector. Our timber, uPVC and aluminium windows and doors perform expertly, with a range of options available, making them ideal for modern homes or even traditional properties looking for a modernisation.
Aluminium windows are thermally broken to ensure they limit condensation and lost heat. This means they will stay looking at performing at their best for longer, so homeowners can be sure that they have made the right investment financially and ecologically.
Sustainability and thermal efficiency are hot topics, which is why we’re keen to inform our customers about aluminium windows and how they relate to this. With energy efficient glass and profiles manufactured with thermal properties in mind, homeowners will be sure to save money on their bills and be proud of their investment.
Talk to our team today or request your free online quote to find out more.
Window energy efficiency ratings have become increasingly important for homeowners, and therefore it is key for tradespeople and installers to understand as well. With energy efficiency ratings explained, you will be better able to get across the importance of these scores – and how windows perform in relation to them.
At Dempsey Dyer, energy efficiency is important for us as manufacturers. We know that everybody wants to save money on their energy bills, so they need profiles that are thermally efficient to keep the heat in and reduce the strain on central heating systems.
To help our installer customers and end-user homeowners understand window energy efficiency ratings, we’ve put together this complete guide with all the information you need. As an introduction to energy efficiency scores, this should give you a good starting point. If you have any questions about energy ratings or would like to talk about our expertly manufactured windows and doors, we welcome you to get in touch with our team today.
A window energy rating (or WER) is the score relating to its thermal efficiency and heat transference. It’s a scale between E (at the lower end) and A+ at the top. This is generally the case, as different energy review bodies will have slightly different metrics, although some scoring systems may vary slightly.
You can find out more about the specific examples by visiting Certass, BSI and British Fenestration Rating Council respectively.
To place windows on the scale, a formula is used based on the total solar heat transmittance – that is, the amount of heat from the sun that can pass through the glass, also known as the g-value – plus the U-value of the whole window, frame and glass combined, which is how well the window keeps heat in your home without letting it escape.
While the formula itself may be complicated, you can see how these factors are massively important to homeowners and therefore installers and manufacturers, since they clearly assess how thermally efficient a window is – and as such, how much money customers can save on heating.
A formula is helpful since it makes the scoring system consistent with other products, so customers can easily see how energy efficient one type of window is compared to another, or how a window performs next to a door, for example, or even a washing machine or lightbulb!
As you can tell from the formula above, the energy rating takes into account the glass and the frame combined. As such, energy efficiency ratings are not attributed to one instead of the other, like the frame or the glass individually – instead, it’s the whole unit.
That means that the manufacturing process is key here, which is why understanding energy efficiency ratings are so important to us as manufacturers. At the point when these window elements are combined, the energy rating can be given. If poor quality glass is installed into sub-par frames (or vice versa) the score will drop and the overall product will not score as well.
Window energy efficiency ratings keenly and intelligently are based on the whole product, so customers can be reassured that they are getting the full package that performs as well as it needs to once installed. This makes the WER system a trusted resource throughout the process.
Here at Dempsey Dyer, we’re all about educating our customers on the benefits of our windows and how they will improve the end users’ lifestyle. As such, now you know how window are scored with the energy efficiency ratings systems, here are some of the key benefits of why homeowners should invest in them:
Everybody can rely on numbers and formulae. With WER scored by a set system that’s easy to compare within the industry and across other sectors, it’s easy to rely on. Like results from other neutral, impartial accreditation bodies, window energy efficiency ratings will give you the facts.
With an impartial scoring system in place to go by, WER forces (quite rightly) manufacturers to create quality products on all fronts. They can’t compromise on any elements, such as the frame or the glass, since the score of calculated combined. As a result, energy rated windows are made to impress – both the efficiency score and customers.
Perhaps the most important benefit for homeowners (understandably) is how following the scores of the window energy efficiency rating system can save them money. With windows that score better on WER, customers will enjoy improved heat retention and reduced heat loss – meaning less reliance on energy bills and more disposable income!
Here at Dempsey Dyer, we’re passionate about sustainability, and educating our customers on and abiding by the regulations of the window energy efficiency ratings system is a significant part of this. That’s why we wanted to put together this guide to explain not only why it’s so important to homeowners – but also why we work towards this.
Our windows and doors achieve excellent energy efficiency ratings, so end users can save money on energy bills in line with this trusted scheme.
For more information about how WER relate to our products, get in touch with our team. What’s more, you can use our online quoting tool to get a free quote for energy efficient windows and doors to start saving money – and the planet – today.
During the summer, our gardens are in use far more than during the winter. By extension, we use our back doors a lot more, whether we have them swung wide open to let the air in or we just like to look out of them at the cool morning air and the sunrise that is bouncing off the colours of the lovely flowers we have in bloom. We’re in the height of summer now, so you’ve probably found yourself interacting with your patio door more often than you have for the rest of the year. When you’re doing so, it might be time to ask yourself, is this installation as good as it could be? Maybe you moved into your current home recently, and this is the first time you’ve really spent a lot of time noticing the condition of your patio door. Maybe you’ve had the same patio door for years and are noticing that it’s time for an upgrade. Whatever the reason, you’ve never had more choices available for the perfect back door!
With plenty of options to choose from, it can be overwhelming to decide how to customise your patio doors. Luckily, here at Dempsey Dyer, we supply a patio door that is bespoke to your customers’ needs. To find out more, read on.
An all-time classic and probably the most common variety of patio doors, the sliding door exploded in popularity due to its ability to provide exceptional, uninterrupted views of the garden. Doubling up as large windows and doors, these installations provide a fantastic way of connecting the outdoors with the inside of your home. Our sliding doors come in three materials: timber, uPVC and aluminium. These doors offer fantastic views for end users, letting them enjoy the outside world more.
If you’re looking for the absolute maximum opening potential, then the modern bifold door is an exceptional choice. Bifold doors fold into each other through individual panels and are opened either from the centre or the side. Through this folding mechanism, otherwise known as concertina, these doors provide:
Your patio and interior will become one when these doors are fully open. When you don’t want to have them open, one panel will be designed to operate independently of the others, allowing you to use a regular door for your patio entranceway, saving you the hassle of unfolding doors when you want to enter and exit quickly and easily.
A disadvantage of the bifold door is that it only works when combined with large wall space to get the concertina design’s full effect. Furthermore, the panels are individually separated and thus, do not provide the uninterrupted views that one can achieve with sliding doors. As a result, the bifold door is perfect for homeowners looking to open up their homes during the summer to the outside.
If you’re an end user who doesn’t have space for a bifold door then the French door is an ideal option. The patio door and the French door offer a similar style. Many homeowners often confuse patio doors with French doors, and understandably so! The French door is the simplest option of the three, but that is in no way a bad thing. The French door gives the home a great and easy-to-use exit that provides good views into the back garden and can be placed in a small space along a wall, allowing for maximum heat retention in the winter. The French door can also be opened like a bifold door, allowing for huge airflow throughout the home.
The French door requires the least amount of maintenance among the three options due to its small size in comparison. The French door is perfect for the homeowner looking for a simple option or for the homeowner that wants to maximise their wall space and isn’t particularly interested in all-encompassing views of their garden.
We hope that this article has helped you understand the difference between sliding doors and patio doors. Both doors offer popular choices for the customer as they come in slim sightlines, allowing for beautiful views of the outside. Our friendly and professional team have decades of experience installing doors, so we are on hand to help you.
Whatever you choose you’ll get the absolute best in modern performance when you choose Dempsey Dyer for your home improvements! Get a free quote by using our online pricing tool!
Since modern housing design began back in the late 1960s, homeowners have always been looking for a way to connect the outside of their properties to the inside. Whether that be with a balcony that overlooks a busy city street or a garden that is home to plenty of social gatherings over the summer months. Whatever it may be the homeowner has on the outside, having a large opening out back really helps with providing the illusion of more space within the home and giving the home lots of airflow. The sliding door was previously the best choice, and for many people, that still is the case. The sliding door takes up very little extra space when it’s open and gives the household wonderful views of the outside when it is closed.
However, for those with the space, the modern bifold door has started to take the market by storm as the preferred option. Whilst the bifold door may not provide the completely clear view that the sliding door does when it is closed, the sheer breadth of the opening is unmatched. Essentially acting like opening the entire wall, the bifold door is just superb as a modern innovation.
Here at Dempsey Dyer, we provide modern bifold doors in both aluminium and timber variants, each with its own unique benefits and stylistic appeal. Both are excellent choices, but it depends on what the homeowner is after when choosing between them.
In truth, the folding door has been a part of homes since ancient times. Their first recorded use seems to date back to the ancient Romans in various building types and applications. The concertina design (as it is otherwise known) gives the building a difficult entranceway that can take up a lot of space and provide a large opening, likely perfect for merchants and the like.
The bifold door fell out of fashion somewhat over the centuries until very recently, when the double glazed concertina door came back into style. Before this innovation, bifold doors acted as folding walls of a sort, but their lack of structural integrity compared with an actual wall left a lot to be desired. However, when compared to a window, the structure is not massively affected, especially with a back door into the garden.
Bifold doors operate on a rail system on the top and bottom with hinges between each panel. The door has one ‘master door’ at the end on either side or in the middle that can open independently of the others. The rest can then be folded into starting from the master door across the length of the installation. If the master door is in the middle, then the door opens both ways towards the edges.
The design has recently taken the British home design market by storm due to its modern finish and superior ability to provide the illusion of space over the sliding door. Here at Dempsey Dyer, we provide bi-fold doors to trade customers and homeowners in timber or aluminium.
The timber bifold door combines contemporary design with traditional materials. With the advent of modern resin and varnishing, timber no longer degrades in the weather in the same way that it used to. There was a time when purchasing a new timber installation came with a caveat of constant maintenance to keep it from rotting in the humid British weather. Luckily this is no longer the case. You can enjoy the thermal insulating properties of timber as a material with no concern of degradation or deterioration over the years!
We provide three timber species for our bifold doors:
Accoya is the high-performance species that we provide and is made from sustainably sourced softwood. With class 1 durability, you’ll struggle to find better on the market for longevity alone.
Sapele is a common hardwood used for both windows and bifold doors with a class 3 durability classification qualifying it as moderately durable. Don’t let the term fool you, though. This wood species is still able to achieve many years of service in the home.
Our final option is the European Oak that we source through an FSC (Forest Stewardship Council). European Oak has a class 2 durability classification and is excellent for the homeowner looking for an authentic and sustainable bifold door.
Aluminium bifold doors are likely the reason that the bifold door has really taken off in the last ten years. With slim frames, occupants can enjoy exceptional views of the garden whilst also having the option of opening up the door and potentially providing an opening as large as the wall.
Our aluminium doors are able to circumnavigate the issues that once came with aluminium thermal efficiency. We use modern thermal break technology to stop aluminium elements from coming into contact with each other. In doing this, we prevent global cooling of the whole installation and affect your home’s thermal efficiency. With aluminium bifold doors, you can enjoy modern levels of comfort with modern design styles too.
If you’re interested in a bifold door from Dempsey Dyer, whether you be a trade or homeowner, we provide quick quotes right here on our website with our online pricing tool! You can also contact us directly through our contact form with any specific questions you may have.
Installers and other businesses can only work effectively if they have a reliable trade supply service – offering the highest performing products. Luckily, here at Dempsey Dyer we only supply the latest options from market leaders. This guarantees quality, performance and durability – regardless of the product choice.
You don’t just have to take our word for it. A range of familiar third parties have accredited our work. This gives you peace of mind that our practices and products consistently meet high standards and requirements.
For all of our downloads including certifications, installer guides, product brochures and order forms, visit our trade website at http://trade.dempseydyer.co.uk
