Google reviews
4.7
out of 5
196 Google reviewers sharing real experiences.
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Spanish slim-frame specialists
A focused shortlist for minimal sliders, hidden-sash windows and contemporary bifold openings. We name the exact system, glass and configuration on the quote; reference values below are manufacturer claims for stated test arrangements, not a promise for every finished opening.
Our promise
A written, itemised price. No manager discount call. No pressure to decide tonight. No outsourced fitting.
Trading locally since 2010
Public feedback plus active industry certification.
Google reviews
4.7
out of 5
196 Google reviewers sharing real experiences.
Read all Google reviewsCertass · Certified Competent
477
customerreviews
Active TrustMark + Domestic Glazing certification.
Account 14-4642 · Active
Why it is on the shortlist
Good for panoramic rear elevations, hidden-sash windows and projects where the amount of visible glass leads the design.
A brand can cover several systems with different frame depths, opening limits and thermal results. We start with the building and opening, then choose the named product rather than quoting a generic “premium aluminium” tier.
Specification route
Named system families
“As low as” values are manufacturer reference claims. The quote must confirm the whole-product value for the ordered size and glass.
| System | Verified reference |
|---|---|
| COR Vision Plus | 180 mm system; manufacturer reference Uw as low as 0.9 W/m²K |
| COR 70 Hidden | Hidden sash with approximately 85% visible glass |
| Bifold Plus | Bifold route; manufacturer reference Uw as low as 0.9 W/m²K |
See the format
Images show the relevant aluminium product type. They are not presented as completed Cortizo projects.


Questions
Common questions before you compare Cortizo on a written quote.
Yes. Send elevations or rough opening sizes. Final manufacture follows a site survey and approved drawings.
No. They are manufacturer reference values “as low as” the figure shown. Size, glass, opening lights and frame-to-glass ratio change the finished result.
Often, but the systems may use different sections. We confirm the available colour, sheen and junction details rather than assuming a perfect match from a colour name.
The approved scope covers supply of the named Cortizo system, standard survey, installation, making good and certification where applicable. Structural work, unusual access and final decoration are quoted separately once surveyed.
Questions
Cortizo questions before you compare quotes.
Yes. Send elevations or rough opening sizes. Final manufacture follows a site survey and approved drawings.
No. They are manufacturer reference values “as low as” the figure shown. Size, glass, opening lights and frame-to-glass ratio change the finished result.
Often, but the systems may use different sections. We confirm the available colour, sheen and junction details rather than assuming a perfect match from a colour name.
The approved scope covers supply of the named Cortizo system, standard survey, installation, making good and certification where applicable. Structural work, unusual access and final decoration are quoted separately once surveyed.
Price Cortizo
Tell us what should open, the preferred finish and whether windows need to coordinate with doors.
Price Cortizo
Send openings, finish notes and whether doors must coordinate with windows.