Our Top 5 Reasons For Upgrading Surrey Home Double Glazing


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Double Glazing Surrey

Living in Surrey surely has its benefits. Being close to London means excellent transport links, you are only a stones throw from plenty of activities for you and the kids, and it has even been described by the Daily Mail as the Beverly Hills of Britain, as per this article by Becky Barrow: Surrey Best Places To Live. However, there is always one small disadvantage of living in the south-east and that is the poor weather that we get, especially around winter time.

So, one thing we always get asked year on year is how can I make sure the heating in my home stays in my home? One of our first responses is always double glazing. There are lots of benefits to upgrading single glazed, or older double glazed windows to modern double glazing. By doing so, your home will be a warmer, more comfortable place to live. Not to mention adding extra style to your property with coloured or painted window frames.

Looking For Double Glazing In Surrey?

If you are looking for double glazing in Surrey, Chessington, Kingston or any of the surrounding areas in the south-east, but don’t want to break the bank, then look no further than Cosyhomes Windows. We offer a range of brand new, double glazed windows and doors and can also help with repairs and glass units. We know that sometimes changing the glass to upgrade existing UPVC windows is all that is required. UPVC is the most commonly used material for residential window frames, where over 80% of the residential window market in the UK has UPVC frames fitted. UPVC window frames have superior insulation and are specifically designed for double glazing.

Our Double Glazing Upgrade Tips

We are a friendly, family-run company with years of experience in the home improvement industry, making us the ideal choice for doors and double glazing Surrey. Based on this experience, here are our top 5 tips for upgrading your double glazing:

1) Lighter Energy Bills

Double glazing helps keep the cold out and the warm in. The better insulated your home, the less you’ll have to spend heating it, saving you money.

2) A Reduced Carbon Footprint

Using less energy not only saves you money on heating your house, it reduces your impact on the environment too. By using less fuel you’re generating less carbon dioxide, which leads to global warming.

3) A Cosier Home

Older windows, particularly single glazed ones, can be draughty leaving your home with uncomfortable cold spots. Weather tight double glazing will stop any draughts entering your home, making it a more comfortable place to live.

4) A Peaceful Place

As well as insulating your house against the cold, double glazing insulates against unwanted outside noise. If you live in a particularly noisy area such as a city centre or near an airport, secondary glazing can add extra insulation without having to replace your original windows.

5) Reduced Condensation

Whilst double glazing can’t completely eliminate condensation, it does significantly remove it and its associated problems, such as damp patches and mould. It’s not just glass that determines how thermally insulating a window is. Materials matter too. UPVC, aluminium and timber all have different levels of insulation – for example, timber has been found to be the most insulating. Whichever material you choose, installing energy efficient double glazing windows is a worthwhile investment for your home.

Contact Our Surrey Window Installer Today

So, now you know that upgrading your double glazing is most definitely worthwhile and doesn’t always have to cost a fortune. Cosyhomes Windows has over 35 years experience installing windows and doors throughout both Surrey and surrounding areas. For more information on double glazing Surrey, get in touch with our team today for more information on 020 8397 4040.

The Heritage Range


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The Heritage Range
Categories :Windows

Designed to replicate traditional timber box sash windows, uPVC sliding sash windows manufactured from the REHAU Heritage system will provide you with a traditional looking sash window combined with the numerous benefits of uPVC.

The REHAU Heritage system has been developed following extensive consultation with conservation bodies and as a result sliding sash windows manufactured from the system are the most distinctive and authentic-looking PVC-u sash window available on the UK market. Successfully approved and installed in conservation areas across the UK, REHAU Heritage Vertical Sliding Windows are suitable for any home. To add to that sliding sash windows manufactured from REHAU profile are now available in a range of finishes and colours.

Superbly engineered and of exceptional quality, sash windows manufactured from the REHAU Heritage system will add real value and style to your home without sacrificing performance. You will still experience the benefits of noise reduction, low maintenance, safety and security, and energy efficiency – our Heritage system can achieve an A-energy rating.

Classic-style hardware and fittings, and optional decorative horns replicate the traditional timber sash window to create a stunning finish. Further attention to detail in the form of brass, gold or chrome fixings, a deep bottom rail, optional Georgian or Astragal bars, and run-through horns add to a simply superior uPVC sash window. Cosyhomes can provide you with advice on the aesthetic features and options available.

A Record Year

We have had a record year on sash replacement with Rehau Heritage windows. Do take a look through our Gallery to see our latest completed installations – https://cosyhomeswindows.com/galleries/ or we are happy to accompany you to visit a property where we have recently replaced sash windows. Our community of customers are only too happy and proud to show off their new installations, and you can see on our reviews page what people think of us.

It’s all very well having the best window in the world but if you don’t have the right team to install it, you might as well have chosen from the low-end of the market. Our experienced team are experts and that is why we were accredited with the REHAU Authorised Partner status; for our consistency and standard of installation we have maintained over many years.

Now we could talk windows all day, and seeing a sample in the show room is helpful. However, the real testimony will be seeing it at a real home in real working order.

Contact us and let Cosyhomes be part of your double glazing surrey project. Simplicity is the ultimate sophistication.

Triple Glazing Truth


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Triple Glazing Truth

REHAU have a triple glazed casement solution with a U-value of 0.8 which can be fabricated using the usual REHAU TOTAL70 70mm systems. In developing its 0.8 window, REHAU have introduced a solution that uses proven off the shelf components and requires no special machining or tooling set-up.
 The solution is based around their hugely popular REHAU TOTAL70 profile with a triple glazed Argon filled 44mm sealed unit. A standard glazing bead from the REHAU range neatly accommodates the glass without compromising the clear sightlines of the window.

Triple Glazing

You may have heard many other companies promoting Triple Glazing for a while, including what they are terming as free upgrades. Many are still offering the 28mm unit as triple glazed, which although will perform slightly better than a standard A-energy rated sealed unit, the improvement is hardly worth writing home about. To feel the full effects of Triple Glazing, benefitting from the best thermal efficiency and sound proofing technology you need to opt for a 44mm sealed unit – if you’re going to do it, you might as well do it properly.

The open out casement window has been fully weather tested to 600Pa, has achieved security accreditation to BS7950 and is fully certified to the 0.8 U-value at the BRE standard window size of 1230mm x 1480mm.

Triple Glazing

The really clever part about the window is a new REHAU THERMO foam module, which can be applied post manufacture, or on site. REHAU THERMO was originally developed in Germany using a moulded foam material, which is easy to handle and dust free when cut and provides the additional thermal efficiency necessary for the window to achieve the 0.8 U-value.

This simple and cost effective solution means that Cosyhomes as a REHAU Authorised Partner can add a 0.8 triple glazed window to our product portfolio giving you an A+ energy rated window. There are no compromises to be made in terms of window aesthetics or sightlines, weather performance or security.

Seeing as the main differential feature of the triple glazed window is the sealed unit, the cost comparison comes down to glass. Why not give us a call to get an estimate on triple glazing, we think you’ll be pleasantly surprised.

Simplicity is the ultimate sophistication.

Argon Gas – Q & A


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Argon Gas

Argon Gas filled windows feature a double or triple glazed unit that is filled with gas between the panes of glass to increase energy efficiency and sound proofing.

Argon Gas increases the windows ability to insulate by reducing the heat transfer. Argon Gas does not conduct heat as readily as air, so it helps keep heat in during the winter and out in the summer at the same time as an advantage in decibel reduction.


No, Argon Gas is clear, colourless and odourless. Even if installed side by side, you cannot see the difference between a window filled with gas and one without.


Numerous studies show that gas typically leaks out at less than 1% per year. Over twenty years the window still has at least 80% of the gas still trapped inside it.


An emphatic NO! Argon Gas exists naturally in the air you breathe – it is both non toxic and inert.


Argon does not block any portion of the suns light. House plants will not be affected.


Argon Gas

No. Filling the glass sealed unit with Argon Gas alone will not give you an A-energy rated window. Whilst it will improve the thermal efficiency of the window, other measures need to be taken.

Sealed units used to have aluminium spacer bars separating the two panes of glass – these were conductors of heat and cold. Now spacer bars are made of an insulating plastic composite material that becomes a barrier to heat loss. We use the Warm Edge Spacer which does exactly as it ‘says on the tin’ – keeping the edge of the sealed unit warm. At the same time, the window frame needs to be manufactured in a way that meets a standard of thermal efficiency as well as be certified with a Window Energy Rating (WER) to confirm the whole window in its entirety has been correctly produced.


Whilst energy savings are important, the real “comfort” benefit of gas filling the sealed unit is the increase in the inner glazing temperature. Raising the inner glass temperature acclimatises or substantially reduces condensation on the glass. A “warmer” surface is also more comfortable to be near.

There is also a sound proofing element.


Unfortunately not! Gas filled windows are manufactured using specialised equipment and not all manufacturers have these facilities. So when buying new windows make sure your supplier can offer the benefits of Argon Gas for that extra insulation.

Or why not leave it to Cosyhomes. We have been providing Argon Gas filled sealed units with our Warm Edge Spacer bar and A-energy rated window frames to all our customers as standard since 2010. If you want to take thermal efficiency and sound proofing even further, get in touch about upgrades you can make to your existing windows by changing glass units alone or our new Rehau 36mm and 44mm triple glazing.

Simplicity is the ultimate sophistication.

A-Energy Rated As Standard


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Energy Rating Blog
Categories :Windows

Now, you have probably heard Cosyhomes say for a long, long time that all our windows come A-energy rated as standard and now I’m going to give away our secret on why…

Since 2010 Government legislation demanded that windows have a minimum Window Energy Rating (WER) of C or above. Around that time Cosyhomes was inundated with requests from glass suppliers trying to do business with us, attempting to oust our glass supplier whom we had a long-standing relationship with. This gave us some buying power and the excuse that we simply had to have the best.

We have always been a company that believes in high quality products and fitting the best available on the market. Not only does this fit our company ethos and the way we choose to work, it also makes our jobs easier and free-flowing at the same time as benefitting you, our customers. Cheaper products have proven not to stand the test of time, are harder to install, often entail problems, tend to need constant adjustments and tweaks – all of this impacts our customers, and us as a small business.


Energy Rating

Leading up to the legal requirement on energy rated windows, Cosyhomes were one of the first companies around the Surrey area to say we only fit A-energy rated windows, at no extra cost. The big boys (we’ll mention no names) were confusing customers offering A, B and C rated windows, many stating that B rated windows were their standard, and our direct competitors were simply lagging behind. Now, not wanting to sound smug and arrogant but simply sing the praises of our team and support network, we stormed ahead and customers were impressed. Our window profile was already a top quality Rehau 5-chambered system; all that was left to sort out was the glass unit. The glass had to have a Warm Edge Spacer and had to be Argon Gas filled as well as specifications on the type of glass used to put the unit together. We struck such a great deal on the cost of our A-energy rated glass units – paying not much more than standard units – that we could swallow the difference and use it as a marketing opportunity.

Being a small, family business we haven’t got massive resources or expensive consultants – that’s how we keep our prices competitive. It would have been a massive task, and a confusing one at that, to have 3 different energy rated options for our customers; 3 sets of prices, different order forms for each, staff training, meetings with suppliers… the list goes on. Quite honestly, we wanted simple. Simple quotes, simple information, a simple ordering process – for us but more importantly our customers. That’s what people like about us – no gimmicks and no complications. The proof was in the pudding – all our customers were offered A-energy rated windows at no extra cost. Our forward thinking approach meant an increase in sales and customers approaching us as they had seen and heard about our A-energy rated windows.

Obviously many companies followed suit and in the last four years saw sense to only offer A-rated windows as standard. Now with the new 36mm and 44mm triple-glazing options from Rehau the energy ratings system has been all shook up again. Keep your eyes peeled for a future post on triple glazing and how to achieve an even better rating.

For more information, get in touch. We’d be happy to show you how your home could be more thermal efficient reducing heat loss and cutting down on your heating bills.

Cosyhomes Windows. Honest. Reliable. Family-run.

Simplicity is the ultimate sophistication.