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sliding doors by alpine aluminium

Effortlessly Slide Back and Enjoy the View

- with Alpine Aluminium's AP45s sliding door system - 




AP45 Aluminium Sliding Door exterior

15 Year Guarantee 
on all our Sliding Doors

AP45 Aluminium Sliding Door turnaround

7 day Turnaround
Fastest Available in the UK

high security sliding doors

High Security - Secured by
Design, PAS24 Certified

low threshold aluminium sliding door

Low Profile / 


Aluminium Sliding Doors

AP45 Slimline Sliding Doors


Manufactured and hand finished at our specialist factory in Leeds, Alpine’s AP45 slimline aluminium sliding door system is fully customizable, allowing you maximum control over the style and operation of your doors and the perfect finishing touch to your home. Alpine Aluminium’s precise engineering using only Alpine Approved components is reassuringly accompanied by lengthy guarantees, ensuring years of faultless operation and providing you with total peace-of-mind.


AP45 Sliding Glass Door Design Features

U-values up to 1.0 W/m²K
45mm visible sightlines
Up to 4 panels
Standard opening system or lift-and-slide opening
Extensive range of configurations
Width dimensions up to 3000mm per panel
Height dimensions up to 3000mm per panel
Supports up to 400kg per panel

The Option for Lift and Slide Door Operation


Make opening up your aluminium patio doors an effortless process with Alpine Aluminium AP45 lift and slide doors. With minimal effort, they provide a sophisticated opening between your inside and outside space.


As an alternative option to our standard AP45 sliding door opening operation, our ‘lift-and-slide’ door option works as follows - as the door handle is turned, the panel is lifted on to ball bearings, ensuring effortless movement. When you have reached the desired position, turn the handle back to its original position, and the sliding door is secured. This allows you to partially open and 'fix' panels, providing even more opening options. 


The Benefits of Sliding Glass Doors


Sliding doors generally allow for less frame and more glass when compared to bifolding doors across a comparative opening. Alpine premium-grade aluminium is exceptionally strong and can support larger panel expanse when compared to alternative materials such as timber, and deliver a far slimmer frame (AP45, 45mm / AP Infinium, 21mm) - maximising the glazed area and reducing sightlines. As a consequence, most of our customers who envisage they will be spending more time with their doors closed, opt for sliding doors whereas those who are intent on maximising the opening generally choose bi-folding doors - but everyone is different!


In summary, Alpine aluminium sliding doors bring more light into your home whilst delivering incredible thermal efficiency. The perfect combination.

aluminium sliding doors as seen on channel 4

Don’t Miss our AP45 Aluminium Sliding Patio Doors Offer!


Simply call 0113 350 8646 or complete the enquiry form to instantly secure your 10% Discount, 15-year guarantee and FREE Specification Upgrade on our AP45s Aluminium Sliding Doors

free quote

aluminium sliding doors contact

Register Your Details Online Today to Reserve Your
10% Discount
and Alpine NOW Upgrade!

aluminium slimline sliding doors interior

AP45s Slimline Aluminium Sliding Patio Doors


Our AP45s slimline aluminium sliding doors incorporate the very latest Alpine Approved technology and thermal energy efficiency. With a sightline of just 45mm, they maximise the glass within each panel allowing more light to enter the room. With our high-performance thermal glass fitted as standard, the AP45s reduces heating bills and ensures that you remain cosy during the winter months, and with our Solar Controlled glass option, your rooms will stay cool during the summer. To see more AP45 images, download a Sliding Doors Brochure or visit our Sliding Doors Gallery



free sliding door quote

ap45 slimline aluminium sliding door
alpine aluminium slimline aluminium sliding door

Extended guarantee and upgraded spec on sliding patio doors


If you are looking for aesthetically stunning design combined with incredibly thermally efficient sliding or aluminium lift and slide doors, then get in touch with one of our friendly sales team today or visit us at our showroom in Leeds. An Alpine Sliding Door Specialist will be able to help you with a wealth of useful advice whilst providing you with a no-obligation quote based on your individual requirements as well as securing your 10% discount, 15-year guarantee and FREE Alpine NOW upgrade.

call alpine today

bifolding doors


roof lights

roof lanterns

the best finished door products
large areas of glass
let light more into your home with alpine aluminium

Request a copy of our AP45s Sliding Door System overview brochure and receive a 10% discount!


Simply request a copy of the AP45s overview brochure by visiting our downloads section, calling our admin team or completing the no obligation enquiry form today, and receive a 10% discount, extended guarantee and FREE Alpine NOW Specification Upgrade on any subsequent order.


request a brochure

sliding doors brochure

alpine now priority orders

Alpine Now - Our Priority Upgrade


Alpine Aluminium understand that it is not just a bespoke product that you require, but also a bespoke service. From our manufacturing centre in Leeds, we are able to achieve the fastest turnaround currently available in the UK. In addition, we have a wide range of Alpine Approved options and components which will ensure your sliding doors, windows or roofs exceed all expectations with Alpine NOW! 

Alpine Now Upgrade Features:

upgraded glass for better efficiency

Upgraded Thermal Glass


Upgrade today to improved
thermal efficiency with the 4S
glazing system

5 day turnaround doors and windows5 Day Turnaround


From 7 days to 5 days.
The fastest in the UK!

15 year guarantee15 Year Guarantee


Extended guarantee from
10 years to 15 years


colour matchingSeamless Colour 


Perfectly seamless look with matching RAL7016 gaskets, handles and hinges

any colour bifold doors and windows
ANY Colour


Choose ANY colour
to match your home

alpine approved door and window products

Exceptional quality sliding patio doors


Alpine Aluminium Sliding Doors are manufactured using quality materials sourced from carefully selected suppliers. On delivery, every part or component is meticulously checked by hand to ensure they meet Alpine’s quality standards. Should they pass, they become officially ‘Approved’.


Alpine retain full control throughout the manufacturing and finishing processes and as a result, have the capability to achieve an exceptionally fast product turnaround. In addition, on our AP45 and AP Infinium Sliding Doors Alpine offer a 15-year guarantee, giving you all-important peace-of-mind whenever you see the ‘Alpine Approved’ stamp.

Alpine bifolding doors

aluminium windows

roof lanterns

roof lights

get a free quote today

View a selection of our AP45s Sliding Door Case Studies

aluminium sliding doors
triple track aluminium sliding doors
triple track siding doors
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