
Vision EVO
Our lead sliding door. Triple glazed, PAS 24:2022 certified and Secured by Design, with the frame built into the floor, walls and ceiling.
Explore the system ↗CORTIZO ALUMINIUM · MADE IN KENT
Cortizo aluminium systems, made in our own factory for installers, glazing companies and dealers.
THE UK’S ONLY PAS 24 TESTED TRADE SUPPLY OF COR-VISION AND VISION EVO
TRADE SUPPLY
We manufacture Cortizo aluminium doors and windows for installers, glazing companies and dealers across the UK. You sell and fit; we draw, make and deliver, to your customer’s sizes.
Send us a PDF, a sketch or a set of sizes. We send back a full drawing set with your company logo in the title block, ready for your customer to sign, and we make exactly what is on the signed drawing.

WHY AVS
Your Logo On The Drawings Your Customer Signs
Your Own Access To Our Portal, For Project Completion Dates And Progress
PAS 24:2022 Certified Options, And A Secured By Design Member Company
Any RAL Colour, With Dual Colour (one Colour Outside, Another Inside) Available
Cortizo Approved Fabricator, Making In Our Own Factory In Kent
THE TOP TEN TRADE PROBLEMS
From drawings and delivery dates to replacements and aftercare.
The ten things installers say go wrong with a trade supplier, and what we do about each one.
Every order has a delivery date and a status on our workshop calendar, and you can see both on your own portal login. You get an email four days before delivery and another the day before.
Frames, glass, cills, vents and hardware are all scheduled from the one signed drawing and listed on the delivery note. We hold a large stock of aluminium and accessories on site, so there is no reason for an order to leave incomplete.
Nothing is cut until the drawing is signed. The cutting sheets and the glass order come from that same drawing. From quote to drawing to cutting sheet to the CNC saws and mills, no size is typed in by hand, so what arrives is what was signed.
We make and pack in our own factory, so one company is responsible from the saw to your site.
You should not need to phone and chase. Most questions are answered by the calendar on your portal, which you can leave open on your phone or PC. For quick queries there is a dedicated email address and a WhatsApp number.
The signed drawing is the record, but we understand that people make mistakes. Wherever we can, a remake is treated as urgent, and small frame amendments are normally dealt with the same day.
We are the manufacturer. We keep the drawings, cutting sheets and glass sizes for every job, so a replacement is made to the original, with aluminium and hardware from the stock we hold on site.
Half with the order and half before delivery or collection. You are welcome to inspect your order at the factory before you pay the balance and take it away.
Every system, glass make-up and hardware choice is written on your drawing. If anything has changed since your last order, you see it there before it is made.
We quote a price for each door and window, and once you have ordered, that is the price you pay.
Drawn from installers’ own reviews of UK trade suppliers and from trade surveys, 2020 to 2026.
THE CORTIZO RANGE
Sliding doors, bifolds, entrance doors and windows. Explore the range below.

Our lead sliding door. Triple glazed, PAS 24:2022 certified and Secured by Design, with the frame built into the floor, walls and ceiling.
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20mm sightlines, double glazed and PAS 24 tested. Doubles, triples, corners and centre-opening doors.
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The larger-format system, for the biggest panels and thicker glass units.
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Large panes. Smooth lift-and-slide opening. A 50 mm slim interlock option.
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Cortizo’s 4900 sliding door, our Vision Line 35: a 35mm interlock, on two or three tracks.
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Cortizo bifold doors with a 100mm sightline, opening in or out, on a flush threshold.
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Pivot Line entrance doors, single or double.
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Fixed, side hung and top hung casements, including raked and shaped units.
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Hidden-sash tilt and turn windows on the Cortizo COR 70 and COR 80 systems.
Explore the system ↗Corners, gables, raked heads and big spans: our drawing office details the awkward openings with you.
LET’S TALK ABOUT YOUR PROJECT