Common questions about uPVC Windows and Doors

We supply a vast range of uPVC Windows and Doors at Edge, and we get a lot of questions about their thermal efficiency, appearance, and many other factors.

We’ve taken the most frequently asked questions to make sure you have the answers you need!

Should I install UPVC Windows and Doors?

uPVC windows can literally be installed in any type of building. They are incredibly easy to keep clean and are also a very cost–effective, energy-saving solution. So, yes – you should install them!

What is double-glazed glass?

Double glazing is basically two panes of glass sealed together, with a gas-filled cavity between them. Standard units are about 28mm thick, with the actual glass panes at 4mm thick.

Are double-glazed windows good for the environment?
Yes, double-glazed windows are good at preventing heat loss, which both energy-saving and cost-effective! Double-glazed windows are said to be able to reduce carbon dioxide emissions by 680kg per year!

How long does it take to install double-glazed windows?
Installing uPVC double-glazed windows doesn’t take long if you know what you’re doing. We recommend getting a professional window fitter in if you don’t have the experience yourself. Take a look at our PVC installation guide for more details.

Are double-glazed windows vacuum sealed?

No, the cavity between the two window panes is filled with a noble gas, mostly Argon. This prevents the heat from indoors escaping so rapidly, improving thermal efficiency.

What is double-glazing beading?

Beading is the part of the window frame which holds the glass. It’s usually a strip which snaps into the window frame over the glass.

What is the U value of a double-glazed unit?

U values differ depending on the specification of the unit. However, a standard 28mm double-glazed unit is around 1.2w/m²K.

What are the advantages of uPVC windows and doors?

• Low maintenance – easily cleaned or touched up.
• Safe and secure – high-quality locking systems are available to protect your property.
• Soundproof – cancelling out external noise and providing acoustic insulation.
• Weatherproof – protecting property interiors from rain, hail, and other severe weather.
• Great value for money – PVC is cheaper than aluminium or wooden windows.
• Versatile – almost limitless opportunities in styling and performance, suited to any property!

What are the common patterns and types of uPVC windows?

Some of the trends in uPVC windows over the last few years are:

• Grey and black shades
• Matt or woodgrain finishes (for modern or traditional properties).
• Flush casement sashes, these are very popular due to their seamless, classic design – they look perfect in almost every style, whether traditional or modern.
• Sliding sash windows are also very popular in more traditional style projects, these are also great for air flow in rooms.

Why are my double-glazed windows covered in condensation?

If your glass units are misty or have condensation within the panes, this means the seal has broken and the unit is ‘blown’.

Can blown double-glazed glass units be repaired?

We recommend that you replace any blown units (glass units that have mist or condensation inside the pane) as this means the unit seal is broken – there is no effective way to fix this issue.

Are uPVC windows and doors easy to break into?

PVC doors are fitted with high-quality locking mechanisms, as standard – making them a secure option to install in your home. Take a look at our specification guide for more details on the locking systems.

What makes uPVC doors so popular?

One of the reasons why uPVC doors are so popular is because they are very low maintenance. There are a lot of styles you can achieve with uPVC windows too, which is another reason why they are often preferred – Sash windows, French casements, flush sash and standard casements are just some of the styles that look perfect in PVC profile.

Plastic windows provide durable weatherproof protection that can be relied upon for many years after installation and are cheaper than timber or aluminium windows too.

If you have more questions or require a quotation – reach out to one of our helpful team members in the Bespoke Department, [email protected] 0345 021 3333. You are very welcome to visit our window showroom in Chichester too!