Technal UK

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Nick Dardalis

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Technal UK as part of the Hydro Group of companies has been established for over 50 years and supplies a very well respected and specified range of architectural aluminium curtain walling, door and window systems through its network of approved fabricators and installers. 

technal uk sliding doors and windows in a modern block of apartments

About Technal UK

The Technal brand is part of the substantial Hydro Group, and also includes the Wicona German brand of aluminium systems as well as SAPA. SAPA in the UK was a long-established name and now this entire brand and its products is integrated into the Technal brand. In other words, SAPA is now Technal. Despite this, many of the popular and well known SAPA products are retained within the Technal brand.

The Technal name generally has a long-established reputation for innovative doors, windows and curtain walling. Technal UK products are found in numerous developments of housing, retail, commercial, transport, education and other sectors.

Moreover, Technal UK is heavily involved in the specification of glazing, working with construction firms, architects and specifiers.

Technal UK aluminium systems and products

The Technal UK range comprises residential and commercial systems of curtain walling, aluminium windows, sliding and bifolding doors and commercial doors, shopfronts and screens.

Aluminium Windows by Technal UK

Twelve aluminium window systems comprising both established SAPA and Technal brands now form the aluminium windows collection by Technal UK.

Crown Residential Windows

Originally part of the SAPA range of windows, Crown Residential windows comprise fixed, side hung, top hung and steel-look windows. The Crown name also replaced the popular Monarch Aluminium Windows system from the 1990s used extensively in the UK under the previous Monarch Aluminium name. Crown also takes many of the original styling cues from Monaframe such as the softline outer frame detail.

Soleil FY65

A Technal brand, Soleil FY65 is a very advanced aluminium window product offering both minimal-framed or near-hidden opening sashes as well as significant opening window sizes up to 1.4m wide and 2.5m high. Soleil FY65 is predominantly a commercial system with a 65mm frame depth.

A more standard version of the product has a larger visible opening sash design, but with the same features of large sizes, hidden drainage and contemporary styling.

Dualframe 75

Another well-known SAPA name, Dualframe 75 comprises the standard and SI variants. This system has casement, fixed, tilt and turn and reversible aluminium windows. Where enhanced thermal performance is required, Dualframe 75 SI provides an excellent aluminium windows solution. It’s also an externally beaded system meeting current security credentials.

Also available within the Dualframe 75 collection is the Aluminium Balcony Window. A version of the existing tilt and turn window product, this provides inward opening windows, single or double doors. It’s ideal for balcony applications, Juliet balconies and particularly good where window rebates need combining but without the conventional coupling or dummy sash method of other systems.

Dualslide Sliding Windows

Also part of the SAPA collection before integration into the Technal brand, Dualslide are high performance sliding windows available in both horizontal and vertical opening designs. Horizontal sliding windows go up to 1.5m high and vertical sliding up to 2.7m high providing exellent large window solutions in a modern sliding sash product.

Technal UK Aluminium Door products

The commercial and residential door products available comprise both Technal and SAPA products of heavy duty, medium duty and domestic hinged doors.

Stormframe II Commercial Doors

The established SAPA Stormframe name of thermally broken rebated and centre hung commercial door products is established in the market for many years, widely used and tried and tested. Within the range are doors suitable for entrances, fire-exit doors and access control requirements.

Soleal PY55 Commercial Door

A Technal product, Soleal PY55 Commercial Doors are insulated heavy-duty doors available as single action hinged doors, double action hinged doors and commercial doors with an anti-finger trap design. For even higher performance such as busy airports, public buildings and with extra security and anti-vandal properties is a robust CD Commercial door product.

202 Commercial Doors

Originally part of the Glostal name, 202 commercial doors remain in the market as a veteran of the commercial door market, yet still one of the best solutions for non-thermal shop doors and shopfronts. There’s a centre pivot, anti-finger trap and rebated model. 202 remains a great product solution for doors, fire-exit doors, plant room doors and general high traffic pedestrian doors.

Crown Residential doors

A matching door to the Crown windows suite, these doors are designed for their domestic appeal as well as their excellent design. They come as single or double doors, with matching side panels and integrate with the window system for opening vents within door screens.

Dualframe Dualsecure 75mm door

Suitable for dwellings and light commercial buildings such as care homes, the Dualframe product previously under the SAPA brand accompanies the window system for a one-brand solution in building projects. It comes as single or double doors, with matching side panels as well as a low threshold option. The weather and security performance of Dualframe Dualsecure are excellent.

Technal UK sliding and bifolding doors

Five folding or sliding systems under the SAPA and Technal names provide domestic and high-traffic sliding doors as well as folding doors.

Technal Ambial Folding Doors

With contemporary styling and distinctive door hardware, Technal Ambial bifolding doors provide large sizes, multiple configurations and standard proportions at the door mullions. The open corner version features a particularly slim corner mullion at under 100mm each side.

Tigal Pull and Slide Doors

Tigal contemporary inline sliding doors provides all-round locking also resulting in excellent door sealing. This door also features a secure ventilation system, smooth operation, low threshold solution as well as panel sizes up to 4m wide and 2700mm high.

Confort Sliding Doors

Confort sliding patio door provide inline and lift and slide options as well as the capablity of large and heavy sliders with a light and smooth slide action. With flatline styline, bold profiles and great design, Confort comes in three different products. The C125 sliding door provides an inline model, up to three tracks and doors at more standard heights.

The Technal UK C160 and C160S come with enhanced thermal insulation, lockable ventilation facility and added security features. These are the lift and slide models with the C160S being slimmer.

Crown Bifolding Doors

Part of the original SAPA range, Crown bifolding doors are distinguished by their one-piece hinge and classic styling. It’s an addition to the overall Crown range providing a great folding door where the Crown brand of windows or residential doors is installed elsewhere.

Crown sliding patio doors

Again part of the SAPA range, Crown sliding doors are classically styled inline patio doors with a choice of mullion sightlines as well as slim, softline and contemporary frame finishes. The Softline feature retains the characteristics of the best-selling Monaframe patio door, now long discontinued.

Technal UK Curtain Walling and Framing

Technal curatin walling comprises many of the tried and tested sucessful curtain walling systems as well as only having the Elegance 52 from the SAPA brand.

Three curtain walling series, and 11 variants provide low, medium and high-rise solutions for commercial buildings and dwellings. All of the curtain walling products integrate with Technal and SAPA windows and doors.

More information and where to buy Technal UK products


Technal products are available through a nationwide network of fabricators, installers and trade suppliers.

You can get in touch for more information and where to buy these products near you .

Providing expert help to homeowners and trade professionals since 2010




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16:42 30 Oct 23
Nick responded incredibly quickly to my enquiry (on a Saturday too!), and was able to offer invaluable advice on both aluminum systems and manufacturer / suppliers. Thanks Nick!
chris steerchris steer
16:18 09 Oct 23
Had a meeting with Nick during the grand designs show. Was extremely helpful and professional would highly recommend
Chris WesthorpChris Westhorp
19:55 13 Sep 23
Extremely helpful with pointing us in the right direction to find the products we required and suggesting firms that could reliably fit them.Nick was quick to reply and very detailed in his advice.Highly recommend reaching out to them.
Cathy GreenwoodCathy Greenwood
07:03 11 Sep 23
Update - A second email to nick for help on bifolds resulted in a detailed informative reply even on a Sunday ! This guy is so knowledgable and helpful .I approached Nick for an independent view on sliding doors v bifold and the different brand options . His reply was extremely detailed and prompt and allowed me to navigate this often confusing world in a much more informed way . Thanks so much Nick
Anthony CraigAnthony Craig
12:45 05 Sep 23
This is a must site for anyone looking for advice. Great service and very quick answers to questions. Nick has been of great help quiding us through the maze of aluminium products. Thank you
Philip DuffieldPhilip Duffield
20:24 26 Jul 23
I contacted Nick @ ATS for guidance on what aluminium sliding door systems would be suitable for an opening in an extension that is going to be both wide and tall. He came back really quickly with very detailed and incredibly helpful advice. He is clearly extremely knowledgeable about the systems on the market and their respective features and capabilities. If you’re feeling a bit lost by the overwhelming range of choices out there, I’d definitely recommend contacting him.
Dariush HekmatDariush Hekmat
17:25 19 Jul 23
Nick's advice is great. He is always quick to respond and spends time on responses, which really help to make an informed decision.
Alan FosterAlan Foster
07:51 12 Jul 23
Absolutely fantastic. Asked for advice about replacing Crittall (?) windows late last night and early this morning received 3 great suggestions and contact information for suppliers
Rachel LauRachel Lau
09:24 16 Jun 23
Fantastic website full of valuable and pragmatic advice about product selection and comparison: no other website gives information like this. Truly written for public interest. Don't hesistate to reach out to Nick via the mailing system. He responds very quickly, is friendly, and has very sound and high knowledgable advice. I have already shared this with my friend planning her own grand design.
guard Charlieguard Charlie
12:28 14 May 23
I emailed this company just on the off chance they could help me with new magnetic sliders for my patio door. They were not able to supply those but were so very helpful providing me with the name of a company who could. I am so very grateful at the great service. Dare say customers must be very happy. thank you so much.
Benjamin LewisBenjamin Lewis
10:06 04 May 23
Nick is very helpful indeed. Extremely knowledgeable on bifolds which was in relation to my query. Great website as well, some very useful articles. Particularly appreciated the article that lists all the major bifold options in order of their sightlines! Thank you!
P JonesP Jones
08:07 15 Apr 23
I asked Nick some questions about an installation we were considering and he replied within hours with some very useful suggestions that will probably lead us to using a different make and supplier. Thanks, Nick. Great work.
Nicholas WallNicholas Wall
13:18 02 Apr 23
Looking for fair and honest expert advice on all aspect of aluminium windows and doors? These guys will arm you with all the information you need to make the RIGHT choice in a highly complex, crowded marketplace. post a question and you will get a very quick professional answer you can rely on being based on fact. Thanks guys!
Giorgia SiriacoGiorgia Siriaco
16:25 21 Mar 23
After a lot of research to find doors that would meet our unusual size requirements and feeling increasingly uncertain about the best way to spend our small budget, I stumbled on the ATS website, and I'm so glad I did! I contacted ATS to request advice and Nick promptly replied with a wealth of information, providing us with options and relevant contact details. I only wish I'd found them sooner!
Carol NortonCarol Norton
10:01 17 Mar 23
I've been so confused about how to achieve the look I'm after, and going round in circles with various window/door companies, trying to get away from the huge chunks of plastic currently around my windows. I didn't expect an email to a company found through a Google search to really help - but I was desperate, so I tried. I'm SO glad I did. Finally I have clear explanations from ATS of where I've been going wrong, exactly what I'm looking for, and a list of local companies that might be able to provide it! The response has excelled my expectations and I feel as if I'm finally inching closer to a home with which I'll be happy and comfortable: thank you.
David NunnDavid Nunn
20:54 14 Mar 23
It is rare that I write reviews, however after my very positive communication with Nick - enquiring about suitable slim sash aluminium windows for my project, I felt that a review was definitely warranted. I can reinforce the many positive reviews posted so far, Nick was very quick to respond, providing comprehensive detail, with excellent independent advice.In summary, great service, thank you Nick.
Chantal AuerbachChantal Auerbach
13:04 09 Mar 23
Nick from Aluminium Trade Supply was incredibly helpful informative and pleasant to deal with. He responded quickly to emails and was very knowledgeable. Highly recommend being in touch with Nick if you are considering new aluminium windows or doors.
Lee JonesLee Jones
20:21 22 Feb 23
I dropped Nick at Aluminium Trade Supply an email re high security slim sightline bi-folds and their alternatives and he responded that quickly (and so comprehensively) that I felt bad I’d not paid him for his time!Nick Sir your product knowledge is outstanding and you are providing a level of service that goes wayyyy above and beyond expectations. I’ll definitely make sure I mention Aluminium Trade Supply to anyone I encounter looking for a fenestration solution 🙏🏼
15:13 13 Feb 23
We are looking to replace some old UPVC patios doors with aluminium ones. The ATS website is a great source of advice in an area where clear information is sorely lacking. Having used the website, I then followed this up with a number of specific questions relating to our search, and Nick came back very quickly with clear, detailed and very useful advice.I have been very impressed with both the website and with Nick's advice. My only regret is that I didn't come across ATS before replacing various windows in 2021 - I'm sure it would have saved me a lot of grief and money! Thanks again Nick.
Azza McCabeAzza McCabe
17:47 01 Feb 23
So impressed with this company.Responded to my query quickly andgave valuable advice. Nick was extremely helpful and we were able to move forward with our project.
Adri LoloçiAdri Loloçi
11:21 08 Jan 23
Nick was super fast to respond and provided some great recommendations. I would recommend this website to anyone looking to find bifold or sliding aluminium doors.
Stephen HoustonStephen Houston
16:16 03 Jan 23
Looking for aluminium crittall style internal door and external patio French doors. Noted good reviews and thought would ask for advice. Comprehensive reply with excellent independent advice and lists of fitters who could provide products and installation. Great service.
Inga GeachInga Geach
08:25 21 Dec 22
Nick from Aluminium Trade Supply has been extremely helpful with navigating the jungle that is aluminium glazing for our upcoming extension project. His advice was prompt, detailed and always impartial. Very grateful for your input, thanks Nick!
Amanda BurtonAmanda Burton
10:54 16 Dec 22
Brilliant website and an excellent service. Nick provided not only detailed advice and supplier contacts, but highlighted the considerations of various products so I could make an informed choice. Our Sunvista minimal sliders were fitted this week and I couldn't be happier, stunning. Thanks once again for your advice and recommendations, invaluable!
Keith BarnesKeith Barnes
17:18 10 Dec 22
Very helpful advice given to my question, including the name of 3 different companies that i could try for the product being enquired about. Many thanks
Munim ChowdhuryMunim Chowdhury
11:45 13 Sep 22
Nick has been very helpful on signposting me to a number of partner organisations for steel/aluminium doors.
SUSAN wallaceSUSAN wallace
17:26 31 Aug 22
My experience with this firm was exceptionally good and this is notalways the case as a female, dipping a toe into technical waters.I was spoken too with courtesy and at a level that helped me consolidate what was needed .On top of that I was given a list of companies and places where I could obtain the type of product I needed.I could not thank them enough and would certainly go there again and reccommend others do too.
Paul SalterPaul Salter
22:39 22 Aug 22
Contacting Aluminium Trade Supply is like contacting the Oracle direct. Advice is always comprehensive and balanced. On multiple occasions they have provided me with options that fully meet our objectives. Many thanks.
Nick McCormackNick McCormack
20:25 14 Aug 22
Really helpful and useful came back to me on a Sunday with some invaluable information. Highly recommended.
ray addisonray addison
13:14 14 Aug 22
received a prompt reply to my query,and helpful information from ATS