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Our slimline casement windows are a strong option if you’re seeking a window solution that delivers on durable protection and stylish, minimalist frames.
Whether you’re looking for thermally efficient windows for your property project or home, slimline casement windows are a long-lasting option. Casement windows are typically side-hung, but top-hung versions are also possible. They are designed to suit any project or property and to last for decades.
Aluminium casement windows with slimline frames are modern and long-lasting and will complement your property regardless of its design. Their large expanse of glass allows unobstructed views and as much natural light as possible.
If you need to modernise a property or are developing new builds, slimline aluminium casement windows are flush-fit and offer various opening options.
They are also an excellent option for adding value to properties and reducing energy bills, as they are energy-efficient, sustainable, and modern. The high-quality aluminium window frames can withstand all weather conditions, and the powder-coated finish is easy to look after.
Casement windows allow efficient ventilation as they can be opened fully to maximise airflow while remaining safe.
To explore Klosen’s slimline aluminium casement windows and other window options, download a brochure or request a free quotation.
At Klosen, we cater to a wide range of customers and offer over 25 years of experience in this field. We’re confident that, whether you’re a project manager, business owner, homeowner, or architect, we can help you create the ideal windows for your project. Collaboration and customer satisfaction are key values, so we work closely with all our clients to install slimline casement windows.
Over the year, we’ve helped customers find the perfect window solutions for their properties across Peterborough, Cambridgeshire, Lincolnshire, and nearby areas.
At Klosen, we have a trusted team of slimline casement window installers ready to help you. From your initial design ideas to the final installation touches, we are available to discuss your project and offer support and suggestions.
We focus on delivering high-quality service, including regular updates. We ensure premium products, quick installation and value for money. Our goal is to ensure a five-star experience and we work only with trusted brands and installers. With us you will receive a 10-year warranty and we will partner with you throughout the process, from choosing your windows to installation satisfaction.
Please contact us for a free quotation or to discuss your specific needs.
We offer a 10 year guarantee on all aluminium profiles and 25 years for the powder coating element
Stay warm in the winter and cool in the summer whilst cutting down on energy bills
Our team are flexible throughout the entire process, including the design and installation of windows
Klosen have over 25 years experience working with designers, architects and homeowners
We only offer products from well-known brands like Cortizo, Origin, and Senior Architectural Systems. These brands align with our commitment to providing high-quality and reliable products that are also environmentally friendly.
With a long and trusted reputation, Spanish brand Cortizo is a leading manufacturer and designs superior aluminium windows. Their selection of windows is perfect for all types of buildings and is designed to let in plenty of natural light.
Find out more about Cortizo windows and what styles they offer.
All Origin window products are crafted from high-quality aluminium tested in their Buckinghamshire factory. All windows come with a 20-year parts guarantee for customer peace of mind, and the models meet security standards. Origin offers over 150 colours for personalisation and other add-ons for your unique windows.
We supply a range of windows from Senior Architectural Systems, including the following:
AliVU window solutions are durable and suitable for extensions, new builds, or commercial properties. With different vent options and made to adhere to current building standards, they are a strong option whatever your building design.
The Aluminium Series 2 windows have a sleek look and offer excellent energy efficiency. They are perfect for home extensions, commercial renovations, or new constructions.
We are located in Market Deeping in Lincolnshire. We generally work within a 60-mile radius, serving areas such as Peterborough, Cambridge, Lincoln, and London.
Contact our team today to learn how we can work together on your property.
At Klosen, we always aim to exceed your expectations. Plus, you have peace of mind with our 10-year guarantee on all our aluminium profiles and a 25-year guarantee on our special powder-coated frames.
Over the years, we’ve embraced new materials and modern technology, and in 2021, we appeared on Channel 4’s Grand Designs for a project in South Lincolnshire.
We believe in offering tailored solutions to all our customers and aim to build lasting relationships.
Yes. Our slimline casement windows have been designed with your security and safety in mind. They are fitted with multiple locking mechanisms, including multi-point locking systems.
Yes, casement windows can complement existing slimline sliding windows or replace old windows for a complete upgrade. We can also match them to aluminium-framed doors where possible. We can discuss your project to determine what you want to keep and what to replace.
We believe in your satisfaction, so we only work with trusted providers. We therefore only supply casement windows from the industry’s leading brands: Origin, Senior Architectural Systems and Cortizo.
We can offer either double or triple-glazed panels for your property, depending on the thermal efficiency you are looking for. These windows improve thermal performance and energy efficiency and can be customised depending on your property needs.
