A Guide On How To Install A Window


Posted By : Rachel Bownds 0 Comment
How To Install A Window
Categories :Windows

In this day and age, it seems that we are a nation of DIYer’s; always looking to cut costs and do jobs ourselves. However, sometimes we may not know the right way to go about it and we usually end up creating more of a mess than we initially started.

Installing a window may seem like an easy task, when in reality it can be a very complicated process that requires expert knowledge and tools to complete to a high standard.

Here at Cosyhomes Windows, we have put together a ‘how to guide’ on the window installation process and explain how we can assist to ensure the job is finished to the highest standard.

Before You Start

It is extremely important that before you start you make sure that you have the right size, style and handing that you ordered. You will also want to check the opening size against the new window pane. The new window should be approximately 10mm smaller in both width and height than the opening.

Take Out Existing Windows

Once you have moved all of your ornaments, photos, blinds or curtains out of the way and laid down dustsheets, you can start to remove the existing window:

  • You will need to remove all opening sashes with a screwdriver before you can remove the glass.
  • Removing the glass is usually done by carefully cracking the glass and removing the shards. You will need to ensure that you have heavy duty gloves and goggles for this part of the process and always start from the top corner, discarding the shards of glass into a plastic bin as you go.
  • Once all of the shards have been removed you will need to use a stanley knife to break the plaster seal that can be found around the window frame before using a crosscut saw to cut through the remaining mullion (vertical) and transom (horizontal) frame parts to remove them.
  • It is important that during the frame removal process that you do not damage the plaster, brickwork and damp proofing of your property. Once you have cut through the frame it should be possible, by using a nail bar, to remove it away from the plaster.
  • Any remaining debris can be removed using a masonry chisel.

Fitting The New Window Frame

Once the old window has been removed and the area has been cleared of debris, it is time to install the new window:

  • The sill will need to be fitted so that it has around 5mm clearance between itself and the brickwork. Once you are happy that it is level (by using plastic packers) you can secure it using 8x 100mm fixing bolts 150mm from each end and at 600mm centres after that. You should not overtighten the bolts.
  • Now it is time to run a bead of silicone along the back edge and secure the end caps into position using either silicone or superglue.
  • You should remove the glazing beads from the window frame, marking their position up on the frame so that they can be returned to the correct position.
  • Now it is time to pop the window frame into position. The base should fit snugly against the sill, ensuring that a tight seal is created with the silicone. You should make sure that you clean off any excess silicone that you find at that time. Once in place you will want to make sure that it is level.
  • The window frame will need to be wedged into position using plastic packers, but you shouldn’t over pack as this can bend the framework.
  • Open the vents of the window frame so that you can access the outer frame jambs. The bottom of the window can now be secured to the sill from each internal corner. Once it is secured to the sill, the window jambs should be secured into the brickwork that surrounds the window.
  • Once completed, you should check that the screw heads are not standing proud as this can cause an issue with the positioning of the glass.
  • Now you can close and lock all of the sashes, checking the outer frame to ensure a square fit.


The last stage of the process is glazing. Glazing requires a gentle touch to ensure that the new glass does not crack or break during installation.

  • Before you fit in the glass you will need to secure glazing bridges into the recess of the frame. Once you have done this you can position glazing packer, using silicone onto the glazing bridges, starting from the bottom first. If you have side hung sashes then you will want to secure an additional packer onto the bridge opposite the hinge side of the frame.
  • Now is the time to add the glass into the opening. You will need to ensure that it is central and resting squarely on the packers. The glass should then be pushed in gently as far as it will go into the opening.
  • You should position 2mm glass packers to square up where needed.
  • Test the sashes by gently unlocking and opening them. This is to check that there is free movement between the glass and frame and to adjust if required.
  • Replace the glazing beads into their marked original positions. You should always place the top first, then the bottom before finally replacing those on the side.
  • To secure the window frame to the outside masonry, you will need to gun some silicone between the two. This should be left for 1 hour.
  • Once you are happy with the window and that everything is dry, you should then remove all of the protective tape, clean and leave to dry.

Ask The Experts At Cosyhomes Windows

As you can see, installing a new window into your property is a complicated process that requires professional grade tools and experience. You also have to understand and translate heavily technical regulations from Local Authority and seek approval from Building Control to change any window or door. Whilst you still may want to give it a go yourself, you may find that it is a better idea to get in touch with a professional window installation company that can install quality windows into your home. This is where we can help. Give us a call now on 0208 397 4040 or contact us via our online form and one of our team will get back to you shortly.

Choosing Windows And Doors Of High Quality


Posted By : Rachel Bownds 0 Comment
Categories :Doors, Windows
Tags :  ,

When it comes to choosing items for your home, especially those that form part of the building, you are likely to want to select as high quality as you can. This is why anyone choosing windows or doors should take their time on their decision and carefully consider all the factors.

Here at Cosyhomes Windows, we only offer the highest quality double glazing Surrey, windows, doors and glass units available on the market. But with great looking products, you need top quality fixtures. During fabrication and installation, we believe using the best materials available on the market along with a very experienced team of fitters gives you – our customer -complete peace of mind and a perfectly functioning product.

But how can you tell the quality items from those that may not last quite as long? We have put together our guide for sourcing that perfect window or door.

Materials used

Windows that are created in Europe must not contain lead; as this is toxic. Windows that are created throughout the rest of the world may not have the same standards and therefore can contain lead.

As Cosyhomes Windows items are created within the EU, we can guarantee that our windows are only made from the best quality materials.

Good process control when choosing windows

Much like any other high quality items that are created, windows and doors should follow through strict process control procedures at every stage of the manufacturing process. This means that you can be sure your window or door has been thoroughly tested and will not only perform well but will last a lifetime too!

Cosyhomes Windows have strict procedures and manufacturing processes that our fabricators follow in order to craft our beautiful windows.

Those finishing touches

Aside from making sure that your window or door works well, the fixtures and fittings that complete the door or window system are also incredibly important when choosing double glazing Surrey, windows and doors.

Hinges, brackets, locks, handles all need to be made to the highest quality to ensure that your windows and doors are secure and work the best for you. Some window companies may choose not to use high grade finishing fixtures, however here at Cosyhomes Windows we know that every single part of your window and door is vital.


Companies who are secure in the knowledge that they are providing quality to their customers are more likely to offer a warranty or guarantee on the items they craft and sell. Here at Cosyhomes Windows, we offer guarantees on all our products and on the installation of all your windows and doors.

With us you can rest assured that you are protected every step of the way when choosing windows or doors. So, if you are looking for the highest quality window or door, you know where to come to ensure that you receive only the very best! Call us today on 020 8397 4040.

Our Top 5 Reasons For Upgrading Surrey Home Double Glazing


Posted By : Rachel Bownds 3Comment
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.

Triple Glazing Truth


Posted By : Rachel Bownds 2Comment
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.

A-Energy Rated As Standard


Posted By : Rachel Bownds 0 Comment
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.