It is the most sought-after solution in the market of window constructions. Double glazing combines safety, aesthetic appeal and energy efficiency.

The key feature of double-glazed windows lies in their internal filling. The space between the glass panes is filled with argon gas, enhancing the energy saving performance throughout the year.

We manufacture our products according to custom orders, adhering to the AS 3959-2009 and AS 1530.8.1 standards for home construction, while also considering your specific requirements and budget.

Why uPVC

Whereas most typical windows styles are aluminium and timber, uPVC material is gaining its popularity in Australia. Main benefit over aluminium is thermal efficiency – even thermal break aluminium is unable to compare with uPVC when it comes to thermal efficiency and heat retention. Aluminium is a conductor so any benefit gained by installing double glazing will be reduced by a non-efficient framing of the window. Wooden windows have better thermal properties compared to aluminium, but they need to be constantly maintained. Given the fact that many properties are based in coastal or near coastal areas this is a massive long term cost problem.

Window styles and designs

We offer a wide variety of window designs, but most popular is tilt and turn window. This opening allows a simple ventilation option with superior security even while the sash is in tilted position. When window is open it allows for access necessary for cleaning or enhanced ventilation. Frames have both primary and secondary seals that ensure even better performance. Multipoint locking system adds to sealing properties of the window, adding to noise reduction, security and thermal efficiency. This opening type is so popular that many customers choose it for their laundry doors. Child restrictors can be easily added for upper storey windows. All of our tilt and turn windows come with beautiful incorporated fly screens with a very neat design. Our double glazed windows are available in a variety of colours, most popular however are black and white.

Double glazing and noise efficiency

Double glazed units filled with argon gas and with added low energy coating can significantly reduce heating and cooling costs and add to the level of comfort. Additional options available for noise reduction for various areas with different noise reduction requirements. Triple glazing options we provide help further reduce energy loss through the window and bring you house in line with passive house requirements.

Custom double glazed windows

Our custom manufactured products are made specifically to your requirements and our friendly team will be with you all the way to guide you through the whole process to choose the best design, performance and cost efficient solution. We work with different projects and different budgets, so we can work out the price that will work for you and we can adjust designs to suit your budget.

Experience optimal comfort and energy efficiency with our high-quality UPVC double glazed windows in Melbourne. These windows, meticulously installed by our expert team, are designed to adapt to Melbourne’s diverse climate and unique architectural style.

Double glazed windows are an excellent choice for Melbourne homeowners looking to reduce energy costs and upgrade their homes. Our UPVC double glazed windows, featuring two panes of glass with a layer of gas in between, minimize heat gain and loss, providing superior insulation and reducing unwanted noise. This makes them a preferred solution for homes in busy Melbourne city areas.

In addition to windows, we also offer double glazing for doors, including elegant sliding doors, adding another layer of insulation to your home. By choosing our UPVC double glazing windows and doors, you can significantly lower your energy costs while improving the security and visual appeal of your home.

Our double glazed windows and sliding doors in Melbourne are not only practical but also enhance your home’s aesthetic appeal. With a variety of styles and finishes available, you can find the perfect fit that complements your home’s existing design.

We pride ourselves on delivering exceptional customer service. Our team of skilled professionals is always ready to guide you through the selection process, ensuring you choose the best double glazed windows and doors for your Melbourne home.

Upgrade from single glazed to our high-quality UPVC double glazed windows and experience the difference in comfort, style, and energy efficiency. Contact us today for a free quote and let our team transform your living space.

When people buy new things, they always want to make sure that the quality of their purchase meets the price. It is easy to do this, for example, in a supermarket where you can touch the goods or even in some cases have a taste of the food you are going to buy. However, when it comes to buying new uPVC windows or doors, customers often realize that in fact they are buying a pig in a poke. Of course, you can request samples of glasses or profiles but you will not see the final construction until it is delivered to your entrance door.

Blue Sky Windows in Melbourne gives you a unique opportunity to see the uPVC constructions in their original size and shape before you buy them. We have built a special trailer which serves as a display model of our most popular uPVC products. With its help you will easily understand the difference between double and triple glazed windows, get familiar with various designs that are applied during assembly of uPVC windows and uPVC doors, find out about the security features that are offered by these modern constructions and much more.

Quite often our clients have some special preferences and wishes, but they do not know how to express them in words. Some would want a tilt and turn window, while others would prefer to have a vertical or horizontal sliding sash window. There are also awning and hopper windows, center pivots, casement windows, bay and bow windows. Clients who would like to buy uPVC doors will also face this wide range of terminology that can puzzle even the smartest person. With the help of our trailer you can choose the right construction without any troubles and long discussions. Our specialists will help you decide which design will best fit your house and interior and most likely you will be able to even test that construction right then and there.

There are also those that do not believe in many benefits uPVC windows and doors can offer. They think that this is a big trick that is used by dishonest companies to lure more people into buying new windows. They refuse to understand that reinforced polyvinyl chloride profiles are more functional and have better quality than conventional wooden frames, not to mention many other advantages that are characteristic for uPVC constructions. We understand that the widespread advertisements and promises can scare some people off, however we are ready to prove that our claims are more than empty words.

With the help of our presentation trailer our specialists can show you that uPVC windows can keep the temperature inside the building at a required level regardless of the climatic conditions outside of your house. This becomes possible due to enhanced insulation properties of double glazed polyvinyl chloride windows and doors which are enhanced even more if you install triple glazed constructions. Insulation allows you to not only save energy and cut your energy bills, but also make your house calmer and quieter. The vacuum between the panes acts like a noise absorber, that is why you may be sure that cars which constantly move past your house or noisy neighbors who like to shout at each other from time to time will not be a problem for you anymore.

Blue Sky Windows specialists can also show you that our products are weather-proof. You can hose our trailer for many hours or leave it under the snow if weather permits. The trailer will remain always clean and dry inside. The same will apply to your house. New uPVC windows and doors will make it resistant to blizzards, heavy showers and other environmental phenomena so that you can enjoy a comfortable life in your beloved house.

Extra security that becomes a reality with uPVC doors and windows is also a very useful feature. Many people fail to understand that we are living in a society that is full of robbers, burglars and other criminals who usually choose to break into your house through windows and doors. Of course you can install the latest security system which will scan the perimeter of your house, record every movement and make an alarm if someone unwanted gets into your house. However, we believe it is more reasonable to take care of the entrances in the first place rather than turn to hi-tech devices that will guard a “shabby fortress”. Every client of Blue Sky Windows can test our trailer for security and make sure that all fittings, profiles and accessories are strong, reliable and safe.

Furthermore, many people feel that installation of new uPVC windows and doors will add unbearable chores to their daily routines. They believe that such complex constructions as polyvinyl chloride windows for example need to be cleaned with special detergents, varnished every year and repaired by a specialist just about every month. However, this is not true, since uPVC windows and doors require only occasional wiping with a soft cloth and oiling once every one or two years. What is more, modern compounds that are used for production of uPVC constructions ensure that the windows and doors do not rot or bend which will surely save you some money. Also, you will not need to paint them since polyvinyl chloride profiles do not lose their color even after five, ten or more years.

Finally, Blue Sky Windows offers constructions that are fire resistant. Unlike timber windows and doors, uPVC constructions are very difficult to ignite. This property makes it possible to provide better level of fire security which has unarguably become quite useful in Australian rural areas where bushfires and other natural accidents occur every now and then.

So, when energy bills are constantly growing, environmental issues are raised more and more often and building standards and regulations become stricter and harsher every year, it makes good sense to choose windows and doors that offer more for a lower cost. Durability, environmental sustainability, wide range of styles and designs and low maintenance requirements are only few of the properties that accelerated the growth of popularity of uPVC constructions on the modern market and made unplasticized poly vinyl chloride one of the most important materials used in the building industry.

Having decided to buy new windows, it is worth to think about the material which will be used for manufacture of the whole construction. Modern manufacturers offer a good selection of materials such as aluminium, timber and uPVC (or simply plastic). The first two can be combined to create even more functional constructions. Sometimes, people find it difficult to choose between all these options, therefore we provide an overview of these materials and their characteristic features.

Aluminium is an ideal material for glazing of shop windows (i.e. large areas for glazing), entrance halls and partitions between two rooms (for example in an office).  The transparent section of the window is usually filled with traditional double or triple glazing (i.e. two or three glass panes), however it can be also filled with semi-transparent or nontransparent material, also known as a sandwich (aluminium or plastic). The aluminium profile is divided into two groups: “warm” and “cold”. Since aluminium is a good thermal conductor, outdoor glazing is usually performed with the “warm” aluminium (i.e. aluminium profile with a thermal separation that can be described as a thermal insulating insertion made of a special material that is fitted between the inner and outer parts of the profile). Warm aluminium windows are often installed in offices and other administrative buildings. “Cold” aluminium is used for manufacture of office partition walls and other constructions that are used only inside the building. All aluminium constructions are reliable, durable and resistant to environmental impacts.

uPVC windows are most frequently used for glazing of living areas such as apartments, cottages and other types of houses. Like “warm” aluminium, uPVC profiles are very good heat insulators that can be used for manufacture of office partition walls and glazing of hall entrances. However, uPVC constructions place strict limitations on the area that can be actually glazed. Regardless of all apparent advantages, aluminium is very rarely used for glazing of living areas, since the cost of “warm” aluminium constructions is much higher than those made of unplasticized Polyvinyl Chloride (uPVC). This is the main reason that explains the popularity and great demand for uPVC windows among ordinary house owners.

uPVC windows that are manufactured according to all technological requirements and instructions on modern high-quality equipment will definitely serve you for a long time. uPVC windows are not affected by impacts of external environment.

Wooden windows are most frequently used for glazing of apartments and countryside houses. The cost of such windows is considerably higher in comparison to uPVC and aluminium windows, because raw wood requires a lot of processing before it can used for manufacture of wooden profiles. All production stages include complex procedures like protection coating from insects and environmental negative effects, however the end result is certainly well worth its money.

Now, let us talk about advertisements.

Inexperienced customers very often become targets of dishonest advertisers and agitators that want to sell you their products. If you look closely, you can notice that they use a lot of funny clichés that have already become some sort of myths. Here are some of the most common:

Windows do not let cold air get inside your apartment.

Actually, ANY window lets out more heat than ANY wall. This means, that the ideal house with most heat saving efficiency would be built without windows at all. Would you like to live in such a lovely house? We seriously doubt that. Windows and doors (i.e. any openings in your walls) will aalways make up to 80% of all heat losses. There are no windows or doors that would totally prevent heat leaks in your house. However, good modern windows will save twice as much heat inside your house than old ordinary wooden windows. People often say, that uPVC windows often accumulate condensed water inside their glass units. There is nothing bad in this. It is just physics. If you cook soup for a long time with your windows closed, you will notice condensed water vapor not just on your windows, but on your walls as well. Modern windows have a very efficient system of sealing that prevents air drafts. This system also has some side effects. For example, you will need to air your room to reduce the level of humidity.

Windows suppress all street noises.

Firstly, not all windows have this feature and, secondly, the degree of suppression is very often exaggerated. For example, low-frequency noises produced by street trams, rock drills or highway traffic can be considerably blocked by right glass units, nonetheless the noises will still be heard inside the building.

High-frequency noises can be better blocked. If talking from a subjective point of view without any numbers, the noise will not disappear completely, however you can soon realize that you merely hear it. Still, if there is a high-speed motorway outside of your building, it is worth to install triple glazed windows with glasses of different thickness, for example 4 mm + 6mm + 4mm. This will give additional noise suppressing effect due to partial reduction of resonance. Apart from this, it might be a good idea to divide a large window into several smaller parts, since big glasses are more prone to resonance than small ones. Additionally, it is necessary to keep in mind that once you open the window the whole soundproofing effect will disappear, therefore if you really need quietness, you should think about some air conditioning systems that would keep your house fresh even if your windows are always closed.

There is a vacuum inside a glass unit.

The term “vacuum glass unit” is not quite correct. If there was a vacuum inside your uPVC window, then the pressure would crash the glasses inwards. In reality, the space between glasses of all uPVC windows is rarefied in order make those frames stick better to each other. However, this is not vacuum in its usual sense.

Thick triple glazed window unit is the best.

This is not always the case. There are several types of thermal exchange such as radiation exchange, convection exchange and conductivity exchange. The simplest one is solar radiation exchange. In order to make things clear, let us give an example. If you grab the metal handle of your frying pan without the oven mitt you will get a burn even though it is the pan that is heated by the flame and not the handle. Convection thermal exchange is connected to the transfer of heat with air (warm air moves upwards, while cold air moves downwards). In this case the air goes up along the inner (warm) glass and the empty space is then filled with cold air that goes down along the outer (cold) glass. In this way, we have constant circulation of cold and warm air inside the glass unit that helps to transfer heat outside and cold inside. This type of heat exchange is the most wasteful since the rate heat loss is enormously high. Narrow space between the glasses helps prevent the above mentioned circulation. Thus we need to care only about radiation and air conductivity exchanges. Now it becomes clear that the space between two glasses of the uPVC window is very carefully measured and has ideal ratios. Increase of space will inevitably lead to worsening of thermal characteristics of the whole uPVC construction.

Our experience shows that triple glazed windows are one of the best solutions for Melbourne due to their price-quality ratio. In order to enhance the insulating properties, standard glasses can be substituted for the so-called energy saving K-glasses that can reflect thermal emissions back into the house.

Prices for 1m² of uPVC windows are unreasonably high.

It has been well said that there is no such thing as free lunch. This saying is very meaningful since this principle applies not only to your food but also to any other aspect of your life. If you have decided to change your windows, be ready to open your wallet wide. You should understand that modern uPVC windows cannot be cheaper than outdated wooden windows made by some shady firm. The prices for uPVC windows are almost the same throughout all Australia. If somebody offers you to install new windows for a ridiculous price, you should think twice before accepting such offers. Do not make your choice only because of some abstract sums. Do not be lazy to measure your windows with a simple tape, think over the configuration and layout, amount and sizes of the shutters, frames and other components. Make a call to a specialized company and let them do the calculations (Keep in mind that some tricky business owners try to cheat their customers by giving the total price without the goods and services tax). Do not forget to specify the full price you will have to pay for the delivery and installation of your new windows and other necessary details such as window sills, drip edges, transitional profiles etc.

The thicker the profile of your uPVC window and the more chambers it has, the better.

It is pointless to make your profile thicker and more complex than it should be, since its resistance to heat transfer is twice as large as that in a glass unit. If your window gets frozen in winter, then the frost will definitely stick to the glass and not to the window profile. You should rest assured that Australian winters are not cold enough to harm uPVC profiles in any way. Therefore, throw away your thoughts about all possible “construction peculiarities” and “technological novelties”. Profiles consisting of three, four or even five chambers will not make the difference and will not give additional insulation. The profile can consist even of ten chambers with ten contour rubber sealants, but this is just not necessary. No serious manufacturer will turn to such cheap tricks in order to attract more customers. The standard and most optimal scheme is a three-chamber profile, two or three sealants and a triple-glazed glass unit. All uPVC windows from the most well-known manufacturers are made in this way. Do not believe the “managers” of some firms who claim that either REHAU, VEKA, PROPLEX, KBE or INTERTEC is the best company. They are all equally good, so make your choice and enjoy the best products that modern window market can offer.

uPVC is ecologically unsafe. 

We do not want to offend anyone, but such claims often come from people who are out of subject. They are based not on personal experience, but rather on some outdated prejudices.

Indeed, some decades ago people used lead as a stabilizer during production of plastic windows. Later, this element was substituted with other materials, however this was done not only because of ecological hazard (although the amount of lead was within the allowed limits), but mainly due to emergence of cheaper and more efficient stabilizers. Emission of chlorine (Cl) is not supported by any scientific tests at all. Chlorine is present in many natural compounds like NaCl (table salt), however this fact does not scare anyone. Neither we refuse to buy PVC electric kettles that are exposed to boiling temperatures which exceed the temperature of windows on a hot day. Modern uPVC windows do not burn. In fact, in cases of fire, high-quality uPVC windows can help to extinguish it. We all know that if window glasses break, the fresh air makes the fire more intense. So, even if the first glass gets broken due to great temperature difference, the second will allow to hold the fire until the fire brigade puts it out completely. It is also possible to install special glazing which can resist extremely high temperatures to enhance your protection.

Windows are one of the main elements of any building. Reconstruction of old buildings, modification of the exterior of the building or refurbishment of rooms inside the building go hand in hand with the need to install new windows that differ from the old ones by their high-quality and modern style. In order to save money some property owners opt for the window retrofit (i.e. modernization) of the old windows. This approach to money saving is not justified, since window modernization implies a mere substitution of old panes for the new ones or installation of the additional single-glass window frame.

As it is widely known, windows serve not just for aesthetic purposes, but also have certain functional roles that ensure:

• room lighting during the daytime;
• circulation of air (room ventilation);
• sound-proofing;
• protection from dust and moisture;
• heat conservation (during cold seasons).

Room lighting during the daytime

Natural light in the room greatly depends on the quality of the window glass. Old scratched and worn-out glasses have poor light transmission capacity and therefore make the room almost dark even if the sun outside is shining brightly. On the contrary, a new clear glass can fill the room with light even if the weather outside is gloomy and cloudy.

Circulation of air

Ventilation of rooms is of utmost importance for the good health of any person. Old wooden frames are usually distorted and thus can be hard to open. Sometimes they can even get stuck which certainly is not very convenient. It is very difficult to provide regular airing of the room with such old and unreliable windows. Repairs (retrofit) of old wooden windows implies reduction of sashes by means of partial abrasion. The effects of such repairs last not very long because window distortion will eventually get worse. Moreover, reduced size of window sashes will create big gaps between the frame and the sash that in turn will bring dust and cold air into the room. New PVC windows allow to avoid such problems and ensure continuous flow of fresh air into the room.

Sound-proofing

Unwanted sounds coming from noisy streets hinder good rest and hence can make a person irritated and nervous. It has been proved that anyone exposed to loud sounds for long periods of time can get a nervous breakdown that inevitably leads to other serious health issues. Single-glass frames and old windows do not have any sealers and thus they always let street noise through into the room. Modernization of old windows in order to make them soundproof usually includes substitution of old window panes for new glass units. The downside of this method is that the thickness of an ordinary old frame is not fit for modern heavy glass units. This means that the load of the glass unit onto the wooden frame will lead to damages such as cracking or splitting of any part of the window. Nobody will argue that if such thing occurs, then the money for the repairs have been simply wasted.

Protection from dust and moisture

Outside winds bring dust into the room through tiny gaps in the old frame. Over time these little particles can get into the lungs and cause serious health problems such as asthma or chronic coughing. Likewise, during rainy seasons rooms become inconvenient because of the moisture that together with dust get through unsealed windows and accumulate in the house. All this can not only influence the wellbeing of house residents but also damage the house itself. Bulging wallpapers, fungus and increased humidity are frequent companions of people who live in unprotected houses. Most of us believe that in order to solve these problems it will be enough to seal the windows with polyurethane resin. However, self-adhesive sealants cannot improve the situation; they serve as temporary protectors that only partially prevent moisture and dust from getting inside the room. More importantly, if the window sashes are frequently opened and closed, the resin sealants can crumple and get deformed. In this case the rooms will get back to their usual damp and dusty condition. Installation of new PVC windows with high-quality sealants will make seasonal sealing of windows unnecessary. 

Heat conservation

During winter seasons heat conservation becomes very important in order to keep comfort and coziness in the house. Single-glass frames cannot block cold wind that comes from the street. It is true that installation of additional frames or substitution of window panes for new glass units can slightly decrease the heat loss, however such makeshift fixes will still make life during strong colds uncomfortable at best. In comparison to solid materials air has low thermal conductivity. Unlike their wooden counterparts, PVC glass windows have frames with air chambers that serve as some sort of a buffer between cold winds and warm room air. PVC windows with multiple chambers that are filled with inert gas completely block heat loss through windows. Rubber sealants between the frame and the shutters ensure firm fit that exclude cold draughts.

Is it worth to retrofit your windows?

Retrofit (modernization) of old windows can be done only to change the exterior of the window or to adjust its style to the overall design of the building. Such modernization will be appropriate only if the windows serve just for decoration purposes and do not have any functional role. For example, it would be a good idea to retrofit old windows of your unheated veranda or countryside cottage which is used only in the summer. In this case money saving will be justified.

It is not wise, however, to spend your money onto modernization of windows in residential or office buildings where people live or work.  The functionality of such refurbished windows will not meet the basic requirements and therefore specialists recommend to install new PVC windows that will make your house comfortable and warm.