Cortizo COR 70 windows are ideal in residential and commercial projects thanks to their contemporary styling, reasonably slim profiles, quality aluminium frames, and reliable performance. Cortizo COR 70 is predominantly and inward opening system with one outward opening that is highly recommended. Here’s everything you need to know about Cortizo windows and why they should be considered alongside other brands such as Origin, Aluk and Smart Systems.
What are Cortizo COR-70 Windows?
The COR 70 is a collection of inward opening and one outward opening window suite, offfering virtually every opening option and design for residential and commercial property.
Cortizo windows are now known in the architectural and residential sectors for their styling and design.
Characteristics of Cortizo COR 70 Windows.
Profile Depth and Construction
The designation “COR 70” denotes a 70 mm deep window frame, which balances structural stability with minimal visible sightlines. This 70mm frame depth also works well when replacing dated timber, plastic or eary-generation aluminium windows with similar frame depths.
All Cortizo profiles incorporate polyamide thermal breaks, chambers within the frames, using the now well-established set up of big thermal breaks, narrower aluminium profiles to help get to low U-VAlues. It also helps Cortizo windows achieve their always contemporary architectural designs where minimalist frames or expansive glazing is often required.
Thermal Performance of Cortizo Windows
Depending on glazing specifications, COR 70 windows can achieve U-Values as low as 1.0 W/m²K when paired with suitable triple glazing. Double-glazed units often register around 1.3 W/m²K.
Cortizo is listed on the British Fenestration Rating Council Website for most of their window products. BFRC certificates provide a simple A++ to E rating for windows, considering factors like U-values, air leakage, and solar heat gain. This single score is useful for straightforward window replacements and everyday consumer comparisons, but it can be less precise for large-scale or complex builds.
U-values, on the other hand, measure how much heat passes through a material in W/m²K, making them more accurate for detailed calculations and architectural projects. By focusing strictly on thermal conductivity data, U-values allow for precise engineering, which is especially important if you need to meet strict energy performance targets.
We often mention throughout this website that Cortizo U-Values can be vague and hard to understand. Get in touch for more information and advice. Glass specifications affect the overall product U-Value and it’s here you need to be careful, that you’re being given the whole window U-Value not the lower and seemingly better glass U-Value.
Security and Compliance
The COR 70 range often incorporates multi-point locking systems and internal glazing beads, ensuring secure hardware that reduces the likelihood of forced entry. For additional assurance, certain COR 70 configurations may carry PAS 24 or Secured by Design certifications, reflecting extensive testing against forced-entry scenarios. Overall these are well-designed and made windows with reliable security.
The Cortizo COR 70 Range
The Cortizo windows range in the UK, comprises four contemporary window solutions for residential or commercial property. Four are opening inward designs, whilst the Flush Casement and Standard Casement are designed for the UK market and open outwards.
Do not disregard opening inwards windows. In many respects they are better designed than outward opening, give you larger opening vents and in some cases even go up to door sizes.
COR 70 Hidden Sash
The COR 70 Hidden Sash design is engineered so that the casement frame is concealed behind the outer frame, creating exceptionally slim sightlines. This window achieves impressive maximum sizes of up to 1300mm wide or 2400mm high.
With visible sections reduced to as low as 66 mm, this configuration is ideal where an unobtrusive aesthetic is paramount. The hidden drainage channels further reinforce the minimalist effect. This window can only be appreciated close-up and how minimal it looks from the outside and inside with it’s concealed hinges and invisible handle.
COR 70 Industrial TB
Renowned for its industrial-inspired framing, the COR 70 Industrial TB variant resonates with projects seeking an urban or loft-style aesthetic. Again Cortizo shines with big openign window options up to 1600mm wide or 2600mm high.
It maintains similar thermal performance levels and provides expansive glazed areas, suited to larger structural openings where a bolder visual statement is desired.
Cortizo Casement
For projects that lean toward a more conventional casement style, the COR 70 line includes flush and standard casement profiles opening out only. There’s no other casement window that goes as big as this with the slim sightlines, up to an incredible 1800mm wide or high.
Read our Cortizo Casement Review.
These windows retain the symmetry and flush option, with slim, contemporary lines indicative of modern aluminium systems. Yet accommodate a range of architectural periods—offering a practical choice for both retrofit installations and new-build designs.
Cortizo Tilt and Turn
The Cortizo COR 70 tilt and turn window is a multifunctional solution that allows secure ventilation in the tilt position, alongside a fully inward-opening sash for cleaning or emergency egress.
Concealed hinges and hardware help maintain an elegant appearance from both interior and exterior viewpoints.
More information and where to buy Cortizo COR 70 Windows.
Cortizo COR 70 windows are a fantastic choice for slim, modern aluminium windows with matching Cortizo doors system with multiple design options. Energy efficiency figures, security features, and durability are generally on par with or above similar aluminium window products in the market. The best thing about Cortizo windows is their styling and impressive size capability. Don’t disregard the inward opening windows, they are excellent.
At the Door and Window Experts Website, we provide impartial, independent and free advice on all aspects of buying new windows and doors. You can focus on selecting windows that truly match your design and performance needs. Contact us for help and advice on Cortizo windows or doors or your property project, residential or commercial.
Featured image courtesy of Glideline Ltd, premier Cortizo installer.
Where are Cortizo Windows made?
Your new Cortizo windows are made in the UK via a network of approved manufacturers. We’ll put you in touch with the best. The Cortizo aluminium profiles used to make your windows are produced in Spain.
Where are Cortizo windows painted?
Cortizo windows are painted in Spain and in the UK. Simply put, if you are ordering windows in popular RAL colours, grey, white, black, these are probably coated in Spain at the same time as the profiles are produced. If you are ordering windows in non-standard colours, they are coated at specialist and expert powder coaters such as these in the UK.
Are Cortizo Windows of good quality.
The profile/aluminium extrusion quality is excellent as are the components. Cortizo windows have a fantastic, reliable, solid and premium feel to them. The quality you get very much depends on who makes them and, equally important, who fits them. We can help put you in touch with Cortizo installers and manufacturers.
How does pricing for Cortizo COR 70 windows compare to other brands?
Costs vary based on glazing specifications, size, and design type. Buying power, installation costs and profit margins vary as well. COR 70 tends to sit in the mid-to-high range of the aluminium window market, comparable to other well-known premium systems. Get in touch and we’ll help you get prices near you.
Can I retrofit COR 70 windows in an older property?
Yes. However, the feasibility depends on your existing structural openings and any local planning or listed building restrictions. A qualified installer or architect can advise on how these frames integrate with older building elements.
Are these windows certified for security?
Some configurations are tested to PAS 24 standards others are tested to European standards. If security is a priority, we can help you understand the security of Cortizo products.
Is there a significant difference between double and triple glazing for thermal efficiency?
Triple glazing can reduce U-Values, but your exact climate, home insulation, and budget may influence whether it’s worth the extra cost and weight of the windows. Best is contacting us for advice and information.
How do they perform in terms of sound reduction?
Acoustic performance improves with higher-quality glazing units such as acoustic glass. With the right glass specification these windows can help reduce noise in city centres, main roads or other noisy environments.
