Window FAQs
How do I know when I should replace my windows?
If you’ve noticed condensation building up between the panes of your double-glazed windows, it could indicate that the window seals have failed, allowing moisture to enter your home. Once a seal is compromised, any insulating gas that made the window energy-efficient is lost. As a result, your double glazing becomes ineffective, potentially leading to higher energy bills. Moisture issues can contribute to mould growth, which has been linked to health problems like skin rashes, respiratory issues, and other allergic reactions, making it essential to resolve moisture concerns before they worsen.
If you’re having trouble opening or closing your windows, it might suggest that they weren’t installed properly, potentially leading to balance problems that make them hard to operate. Windows that are rusting or rotting can also become difficult to use. In addition, if you’re unable to fully close your windows, you might not be able to lock them, compromising the security of your home.
What material should I choose for my new windows?
uPVC: As the most popular window material, uPVC is well known for its remarkable reliability, hardwearing finish and for how easy it is to keep clean. It’s also a more budget-friendly option than other window materials. We offer an eclectic mix of uPVC window styles, such as casement, sliding sash, tilt and turn, mock sash, bay, reversible, and bow windows.
Timber effect: Timber frame windows are made from wood and have a more traditional look. Although they look beautiful, they require more maintenance and can be expensive. For homeowners who are considering replacement windows, we offer gorgeous timber effect frames.
Residence Collection windows are extremely stylish and designed to look like traditional wooden windows. The two windows we offer in the Residence Collection are R7 & R9 – with slightly different features, you gain the freedom to choose the windows that are most suited to your taste and requirements.
Regardless of which style you opt for, all are made from modern and high-performance uPVC, with multiple chambers within the frame. Capable of holding double and triple glazing, you and your family can gain peace of mind that your windows are keeping your home secure and warm.
Aluminium windows: Successfully able to replicate timeless timber window systems or more contemporary style windows, most commonly seen in modern buildings or offices, our Customade aluminium window profiles compliment both contemporary and traditional applications. Conserving warmth and energy effectively, this in turn reduces heat loss considerably via innovative polyamide thermal break technology. With energy efficiency firmly ingrained within their design, our Alitherm 600 aluminium windows are building regulation compliant; ideal for heritage applications. In contrast to our Alitherm 300 window system, which is more suitable for modern and new build applications.
What type of windows do I have in my home?
If you’re thinking about replacing the windows in your home, one of the first things you’ll need to do is to identify what kind of windows are currently in your house.
Material: Identify the type of material used in the window frames it’s usually quite easy to identify the material used, simply by examining the interior and exterior of the frame and feeling the frame itself. If you are struggling to identify the material, you can try to locate the name of the manufacturer somewhere on your windows. A quick internet search of the manufacturer may help identify the material you have. If you are really unsure of the material you have, you could ask one of our experts when you enquire with us and we will do our best to help.
Glazing: The majority of homes in England today have double glazed windows. When looking at the glass, if you see two panes separated by a spacer bar then you have double glazing. Spacer bars are small pieces of plastic or metal that work to separate and support the two (or three) panes of glass in a multi-glazed window. If it’s just a single pane, you have single glazed windows. If there are three panes separated by two spacer bars, then you have triple-glazed windows.
Opening: Identifying how your windows open is another important point to recognise. The most common types of opening include side hung and top hung. The difference lies in where the hinges sit. Side hung windows open outward with hinges on the right and left of their frame. Top hung windows swing open using hinges at the top of the window frame. Simply opening your windows will help identify which mechanism they use. There are a few other types of window openings, so if you would like help identifying your type then please let us know when you enquire.
What is the difference between vertically sliding windows and casement windows?
Casement windows typically open outward with side-mounted hinges, similar to a door. This design is especially popular in many modern homes.
Sliding sash windows operate by sliding vertically. Traditional versions use a system where the sash is balanced by counterweights made of steel, cast iron, or lead, concealed within a hollow box frame. In contrast, modern sliding windows use a spring-loaded mechanism called a spiral balance to counterbalance the sash. This innovation eliminates the need for weight pockets, making them suitable for smaller openings and allowing for larger window sizes with more glass area. This style is especially well-suited to older or period properties, as it reflects the Victorian and Georgian era’s architectural design.
Do I need planning permission to replace my windows?
No, you do not need planning permission to replace existing windows or doors. However, if your property is in a conservation area, there may be restrictions on the designs or materials you can use, so it’s important to check with your local council. If you are planning to build an extension, planning permission will be required.
How secure are your windows?
How does double glazing work?
Double glazed windows are made with two panes of glass positioned closely together, instead of just a single pane. One pane is on the outside, while the other is securely placed on the inside.
What do energy ratings mean?
The energy efficiency rating for windows follows a scale from A to G, similar to the labels you might see on appliances like fridges, washing machines, and cookers. An ‘A’ rating signifies excellent energy efficiency, while a ‘G’ rating is the lowest. Windows with lower ratings typically do not meet building regulations. We’re proud to say that all of our windows, regardless of their material or style, meet or exceed the recommended energy efficiency standards.
Can I get different coloured uPVC windows?
We offer uPVC windows in any RAL colour, ranging from modern Anthracite Grey to timeless Cream. Additionally, we provide versatile dual-colour uPVC windows, allowing the interior colour to differ from the exterior. This is ideal for homeowners looking to match their new windows and doors with their existing décor.
What are Certass and FENSA certificates for windows?
Why Choose Seal-Lite?
Made in Britain
10 Year Guarantee
30 Years Experience
No Pressure Sales
Quality Products
Aftercare Service
Excellent Aftercare Service and On-Site Service Engineer for Complete Peace of Mind
Visit Our Showroom
New Build Projects