Sliding patio doors are a stylish, space-saving, and elegant way to bring the outside in. At AK uPVC Solutions, we supply and fit premium aluminium sliding doors from leading European brand Cortizo. Designed with a minimalist aesthetic in mind, our custom-crafted sliding systems combine ultra-slim sightlines with exceptional thermal efficiency, robust weatherproofing, and multi-point security. Perfect for contemporary extensions and renovations across Buckingham, Bicester, Brackley, and Aylesbury, these doors deliver outstanding thermal efficiency, weatherproofing, and multi-point security without compromising your views.
Minimalist 20mm Frame
PAS 24 Certified Security
Smooth Rolling Movement
We supply and fit high-performance sliding patio doors that keep your home warm, quiet, and secure throughout the seasons.
Our sliding doors offer exceptional thermal performance. Cortizo’s advanced thermally broken aluminium profiles act as a barrier to heat loss, achieving U-values as low as Uw ≥ 1.3 (W/m²K) with high-efficiency double glazing. If you select the heavy-duty Cortizo COR Vision Plus system with triple glazing, you can achieve elite U-values as low as 0.9 (W/m²K), keeping your home warm and cozy while reducing your energy bills.
We provide maximum weather protection for your home. Cortizo systems are rigorously tested to withstand extreme wind, rain, and cold air, earning Class 4 Air Permeability and Class 7A Watertightness ratings. The sliding tracks can also be fitted with an innovative integrated drainage system to manage water runoff even in highly exposed locations.
Designed to fit your specific needs, Cortizo sliding doors can be configured with single, double, or triple tracks to support up to six sashes. Sashes can be made in massive sizes up to 3m high and 2.5m wide for COR Vision, or up to 4m wide and high for the Plus range. We can also install frames embedded in the floor for a flush, step-free transition, or design a stunning 90-degree corner opening with no fixed post.
Personalise your sliding patio doors to match your home’s unique character and performance needs. Cortizo’s premium aluminium profiles are available in any standard RAL colour, featuring high-quality finishes such as classic Anthracite Grey (RAL 7016), Jet Black (RAL 9005), and Pure White (RAL 9010). You can also choose from metallic, textured, anodised, or dual-colour options, giving you a distinct finish on the outside while keeping the inside perfectly coordinated with your interior decor. Complete your design with double or triple-glazed units, acoustic laminated glass for maximum noise reduction, or advanced solar control glass to reduce heat build-up and glare.
As a proud family-run business based in Buckingham, we provide expert design, supply, and installation of premium Cortizo aluminium sliding patio doors across Bicester, Brackley, Aylesbury, and the surrounding areas. We are fully Certass registered and include insurance-backed guarantees on our installations.
Frequently Asked Questions
Cortizo COR Vision is a premium, ultra-slim aluminium sliding door system. Characterised by its minimalist design, it features an interlocking profile of just 20mm (or 25mm for COR Vision Plus), which provides an almost frame-free appearance. This allows for up to 94% of the opening to be glass, delivering outstanding light and panoramic views.
Because every Cortizo sliding door is manufactured bespoke to your exact dimensions and requirements, pricing varies based on configurations (including 2, 3, 4, or 6 panels), tracks, and choice of glazing or finishes. As a local family-run business based in Buckingham, we provide free advice and fully transparent, honest quotes with no pressure. Call our team on 07525 258447 or email info@akupvcsolutions.com for yours.
Yes. Built from highly robust aluminium, Cortizo sliding doors are fitted with high-strength security fittings, key locks, and advanced multi-point locking systems as standard. Fully accredited to PAS 24 standards, they are designed to keep would-be intruders out and your home completely secure.
While both offer an exceptional frameless look, the main difference lies in dimensions and glazing depth. COR Vision has ultra-slim 20mm sightlines, sashes up to 320kg, and accepts double or triple glazing up to 30mm thick. COR Vision Plus is designed for oversized architectural openings up to 4m high and wide, features 25mm sightlines, sashes up to 400kg manually (or 700kg when motorised), and accepts glazing up to 54mm thick, making it ideal for thick high-performance triple glazing.
Cortizo sliding doors are highly energy-efficient. They utilize advanced thermal break profiles to prevent cold bridging. With high-performance double-glazed units, COR Vision achieves Part L-compliant U-values of Uw ≥ 1.3 (W/m²K), while the triple-glazed COR Vision Plus achieves outstanding thermal insulation with U-values as low as Uw ≥ 0.9 (W/m²K), keeping your home cozy and cozy year-round.