Entrance
Our entrance door range covers DoorCo composite slabs and Eurocell uPVC front doors, manufactured in-house at our Morley facility.
Trade uPVC Sliding Patio Doors Specifications
Browse the tabs below to review technical details, glazing specifications, frame colours and downloadable brochures. Everything you need to quote and install with confidence.
- Details/Features
- Specifications
- Glazing/Security
- Colours
- Downloads
Technical specifications
Full performance details. If you're missing an information for your next project, don't hesitate to get in touch.
Contact Us| Specification | Detail |
|---|---|
| Profile system | Eurocell multi-chamber uPVC |
| Maximum width (2-panel) | Up to 3.5m |
| Panel configurations | 2, 3 or 4 panels |
| Double glazing U-value | Approx. 1.3 W/m²K |
| Triple glazing U-value | As low as 1.0 W/m²K |
| Sealed unit thickness | 28mm (double) / 36-40mm (triple) |
| Glass | Toughened safety glass, Low-E, argon fill optional |
| Locking | Multi-point, Secure by Design, PAS 24 options |
| Frame colours | White, anthracite grey, golden oak, rosewood, dual-colour |
| Handle finishes | White, black, Hardex chrome, Hardex graphite |
| Reinforcement | Galvanised steel in key sections |
Glazing and security
Glass is supplied by Martindale's in Blackburn and Glasscraft in Leeds. Toughened double glazed units can hit 1.3 W/m²K, with triple glazed options often reaching 1.0 W/m²K. Every door uses Secure by Design multi-point locking and three-star barrels where keyed handles are specified.
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Colour and finish options
Frames are available in white, anthracite grey, golden oak and rosewood. Dual-colour combinations let you match interior décor while keeping a contemporary external finish on woodgrain foils.
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Brochures and downloads
Download our brochure for the full specs, colour range, hardware schedules and glazing options. Useful for site surveys, customer consultations and submitting accurate quotes to your own clients.
Contact UsWhy our sliding patio doors work
Our sliding patio doors deliver an expansive view with their slim frames and an unobstructed sightline across the threshold. The horizontal slide saves floor space, making them ideal for tight spaces, conservatories and rear extensions.
Smooth roller carriages, soft-close damping and integrated multi-point locking mean the doors operate cleanly for years. We build every unit to order from our Morley manufacturing centre serving Leeds, Bradford, Harrogate and beyond.
Why partner with Alpine?
We are a family-run Yorkshire manufacturer with approaching 80 years of combined experience between Directors Peter and Richard. Trade enquiries get same-day responses, quotes within 24 hours and delivery typically within two weeks.
From single replacement patio doors to large commercial renovation contracts, we accommodate every order size. Window fitters and builders have trusted us for years, and though our transparent pricing, experience built through years on the tools, consistent quality and personal approach, we hope you can too.
Patio door FAQs
Here are common questions we receive from window fitters and builders specifying our uPVC sliding patio doors. For anything not covered here, our trade team is on hand for direct technical support.
Contact UsStandard 2-panel Eurocell system typically reaches up to 3.5m in width. Larger spans are achievable depending on the state of the space structurally and whether any reinforcement would be required, in which case we can speak to you about it.
Yes. Triple glazed units bring U-values down to around 1.0 W/m²K, supporting Part L compliance on new builds. We source glass locally through Glasscraft in Leeds and Martindale's in Blackburn.
PAS 24 security-rated locking is available on specification. All doors include multi-point locking, Secure by Design hardware and three-star barrels where keyed handles are fitted, giving end clients genuine peace of mind.
We respond to trade enquiries the same day and issue quotes within 24 hours. Manufacturing and delivery typically run within two weeks, with free delivery across Leeds and surrounding areas.
We feel aluminium is best suited to bifold doors, and the market tends to agree. For that reason, we advise bifolds if you’re set on aluminium, but could also accommodate aluminium sliding patio doors on request.
How we work with the trade
Our Process
Initial quote
Send us your sizes online or over the phone. We turn most trade quotes around within 24 hours, and there is no obligation to proceed.
Conversation
We talk through the priorities for you or your client, be it design, thermal performance, security, colour finish, glazing, or locking.
Manufacturing
We manufacture in-house at our Morley facility using Eurocell uPVC profiles, DoorCo composite slabs and Alunet aluminium systems. Typical lead time is two weeks.
Bespoke build, testing and supply
Every frame is made to your exact sizes and quality-checked before despatch. Supply only as standard, full installation available on request.
What fellow trade professionals say about us
Honest feedback from the installers, builders and double glazing companies we supply day in, day out.
Had both front and back stable doors fitted recently, and I have to say the men that came to fit them were really good, pleasant, efficient and did a great job! I am really pleased with my doors and the way the men conducted themselves; they are a credit to Alpine – thanks again.
Carol Marshall
I can’t thank the team at Alpine enough for all of the hard work on your build. They were great from the start, being really helpful through the quote process and in advising. The fitting team worked so hard to make sure everything was perfect, and nothing was too much trouble. We are so happy with Alpine. The results really speak for themselves, and we would not hesitate to recommend them to anyone!
Kate Oakes
We recently renovated a small cottage and needed to consider the traditional look and feel of the property, Alpine Windows and Doors were brilliant, listening to our requirements, we ended up with 6 sash windows and a new composite door all in a non standard colour, which was no problem. from placing the order to the completion of the installation nice and smooth, 5 weeks time frame, fitted perfectly with our project, would highly recommend
Tom Crowe
Excellent service from start to finish. They made the process from colours to design easy, nothing was too much trouble. Lovely polite staff and fitters. Fitters turned up on time and finished to an exceptional standard (I am a perfectionist!) left my home clean and tidy and removed all old frames and doors. Couldn’t fault them at any stage and would highly recommend them. I would give more than 5* if I could.
Sarah Wood
Peter at Alpine has done the windows and doors at both our offices and my home. The service was very professional, fast and competitive price wise. I had a combination of Aluminium bi folds and French doors with UPVC windows. I cannot fault the quality. Very happy to recommend for both domestic and commercial projects.
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