A powerful architecture & Construction theme. Construct your website in the perfect Ratio.
Alienum phaedrum torquatos nec eu, vis detraxit periculis ex, nihil expetendis in mei. Mei an pericula


Klosen / Blog  / Your Comprehensive Aluminium Windows and Doors Buyer’s Guide
External view of timber slimline bifold doors

Your Comprehensive Aluminium Windows and Doors Buyer’s Guide

Windows and doors – a property would be pretty soulless without them. But you don’t just want them to provide views and a way in and out of your home. You want your home to be warm in winter and cool in summer, all while expanding the views and natural light.

If you have the budget, it’s worth broadening your horizons beyond the standard uPVC or wooden frame option. Why? Advancements in design mean that there has never been a better time to give your facade a facelift.

In this guide, we’re looking at the best-selling designs we supply and how you can achieve the upgrade to your current home or new build that you’ve been dreaming of.

Why is aluminium better?

Before we showcase the available windows and doors, let’s explore why aluminium is considered the best material for window frames:

Strength and durability: Aluminium window frames are incredibly strong and durable. With aluminium, a little can go a long way when it comes to strength. Their life expectancy is around 40 years without any sign of wear and tear if properly maintained.

Slim profile and design versatility: A slimline profile provides unobstructed views and a modern aesthetic. They also offer design versatility, making them a popular choice for modern and contemporary properties.

Low maintenance and longevity: Low-maintenance and long-lasting, they have a longer lifespan than other materials and are recyclable, making them an eco-friendly option.

Resistance to corrosion: Aluminium is resistant to rust and corrosion. This makes them a perfect choice for properties near the sea or those exposed to extreme weather conditions. The frames can be further protected with coatings to enhance their longevity.

Strength and eco-friendliness: Aluminium is the strongest material used to manufacture window frames, and it is also an eco-friendlier option as it can be recycled.

What type of window or door is best for you?

We offer a variety of brands and systems that offer premium designs with excellent insulation. As well as supplying a wide range of aluminium windows, Cortizo also supplies elegant sliding and bi-fold doors. With slimline frames, you can enjoy elegant designs with expansive panes of double or triple-glazing.

For front doors, Indupanel creates contemporary, secure designs that offer something a little bit different. Indupanel front doors are designed to be stylish and secure, providing a statement piece for any premises. With over two decades of innovation, the Spanish brand combines intelligent features with ultra-modern designs.

To get inspired, find out more about the brands we stock below.

Get inspired with these designs

Cortizo windows

Cortizo window designs come with enhanced noise and thermal insulation and a choice of opening mechanisms that are easy to use.

With a range of glazing finishes and strong, minimalist aluminium frames to choose from, these windows offer a beautiful, bespoke finish for a property.

Their stylish and sleek design ensures as much natural light as possible.

Cortizo uses reusable material from over 2,400 aluminium waste collection points in Europe, meaning their designs are also sustainable and eco-friendly.

Hambleton Project

Cortizo windows installed at a property in Hambleton.

slimline sliding doors stone house

Cortizo windows installed at a property in Peterborough.

Cortizo sliding doors

With Cortizo, it’s possible to achieve maximum luminosity with minimal frames and glass surfaces of up to 94%! The sliding door systems are suitable for breathtakingly large dimensions, including floor-to-ceiling installations. The Spanish manufacturer produces some of the world’s most elegant and innovative slimline sliding doors. With motorised options and corner posts available, you can create a truly bespoke design that suits your requirements. If you’re looking to let in more natural light and create a more seamless transition between your indoor and outdoor spaces, these are an ideal choice.

Cortizo Vision Sliding Doors installed at a property in a Grade II listed property in Oxfordshire.

Cortizo bi-fold doors

Bi-fold door systems let you open up more of your space to let a breath of fresh air into your home. It’s the perfect way to create a seamless transition between your garden and indoor living spaces. Cortizo is a highly sought-after manufacturer of aluminium slimline doors, and for good reason. They maximise natural light and thermal insulation while also enabling ultra-modern designs that fit your design requirements. You can choose from a glazing thickness between 25mm and 45mm and opt for a maximum sash width of 1200mm to create a stunning space.

External view of timber slimline bifold doors

Indupanel doors

Want a door that doesn’t look like every other door on your street? Indupanel offers designs unlike any others on the market, with clever use of materials and textures. Indupanel’s relentless commitment to design and innovation has resulted in products that not only look sensational but are packed with features. With a choice of colours and accessories with the Doorblock system, you can create a bespoke entrance that creates a great first impression. For enhanced security and ease of access, the Doorblock system can even allow access via a fingerprint reader or mobile app.


Case study – Grand Designs

Cortizo aluminium windows and doors even made it onto the much-loved home architecture TV series, Grand Designs.

The project was based in South Lincolnshire. A couple-team wanted a sleek, contemporary feel to their Dutch barn house build project.

They wanted to invest in the best insulated windows and doors and opted for the Cortizo casement window engineered with high-quality aluminium.

Installation process and maintenance explained

It’s not a one-size-fits-all approach. Every design project is treated as unique and customised to suit your design preferences.

With frames that are designed to fit your space, our team can survey your site and triple-check the measurements to ensure that the installation is nothing short of perfect.

Choose the final look of the surface of the frame
Frame finishes include anodizing or powder coating, both designed to protect your aluminium from the elements.

Choose your opening mechanism
With a choice of sliding, side hung, and turn and tilt opening mechanisms, you can choose windows that work for your space.

Choose your handles and opening accessories
Include a range of handles, multipoint locking systems, and even an invisible opening mechanism, which provides the ultimate minimalist aesthetic. With a multipoint locking system, you’ll benefit from increased security.

Why choose Klosen?

We are here to embrace your window and door project and liaise with you at every step of the way. If you need more help deciding on the right window and door, our team can guide you through the process and take the arduous research out of your hands.

With 25 years in the business, Klosen has become an industry-leading window and door installation company, pushing the boundaries of flair and luxury design with aluminium frames. We’ve worked on ultra-modern new builds, heritage properties, and commercial venues. High-profile installations include supplying windows and doors for the custom-built ABBA concert venue in London.


A true testament to the quality of a product is the warranty that comes with it. With Klosen, you’ll have access to a number of lengthy warranties for your peace of mind.

  • All the aluminium profiles that we supply and install are guaranteed for 10 years.
  • The powder coating element is guaranteed for an additional 25 years against corrosion.
  • Glass-sealed units are guaranteed between 5 and 10 years, depending on the glass specification.

Where do we operate?

We supply aluminium doors and windows in Stamford, Peterborough, Bourne, Huntingdon and even London, typically covering a 60-mile radius from our premises in Market Deeping.

We hope this buyer’s guide will help you get inspired and know a bit more about how the process works for purchasing windows and doors.

Klosen UK

Klosen UK provides luxury and bespoke aluminium doors and windows for your home. We hope you have enjoyed your read.

No Comments

Post a Comment