Kawneer GT70 Slimline Renovation Window

The Kawneer GT70 Slimline Renovation Window provides a solution for windows that are required to replace old metal windows. It is also ideal where a more traditional looking window in modern, thermally efficient aluminium may be necessary.

The design of the Kawneer GT70 window is a flexible one. It is intended to replicate the original appearance of old metal windows and provide an option for new build projects or building refurbishments.

Kawneer GT70 windows. Traditional appearance with modern technology.

kawneer powder coated aluminium window
Kawneer GT70 Steel Replacement from Kawneer make for great residential windows.

The Kawneer GT70 steel replacement window system offers all the advantages of modern replacement windows in a choice of window designs and opening options. At the same time, they provide an option of sight lines to replicate the characteristics of a period window.

  • A credible aluminium window with the features of old metal windows.
  • Can be defined as individual windows, composite frames or runs of windows.
  • Features fine detailing found in traditional steel windows
  • Can open inwards or outwards
  • Can be internally or externally beaded
  • A full suite of mullions and ancillary sections are available.
  • Features bevelled beads
  • Features a concealed drainage system

Also available with the Kawneer GT70 windows are a suite of optional feature caps that provide an individually sculptured effect externally.

Opening options on Kawneer GT70 Slimline Renovation Windows.

A wide variety of opening options is available with the Kawneer GT70 Slimline Renovation Window that set it apart from other ‘steel replacement’ window systems. One of its advantages is that it can accommodate a wider variety of opening options.

Top or side hung casement windows are available. Additional options include inward opening windows such as Tilt Turn; side hung and bottom hung Tilt Turn options as well.

Inward opening windows feature internal glazing beads while outward opening windows are externally glazed. There is no compromise on security with either internal or external glazing options.

Furthermore, Kawneer GT70 Slimline Renovation Windows when externally beaded will accept glass units up to 33mm thick or 54mm for internally glazed.

All window types can be designed either as individual windows such as fixed lights, opening vents or combinations of vents with fixed lights or window units with multiple opening vents.

Kawneer GT70 Slimline Renovation Window typical dimensions.

this property has slim aluminium crittall replacement windows installed.
Traditional properties as well as commercial buildings can benefit from the slim lines of the Kawneer GT70 window.

These slimline windows offer a wide choice of aesthetics and varying profile dimensions. Typically, outer frames are 70mm front to back making them suitable for most building requirements whether old or new.

Typically window sight lines at the jamb and when used with an opening vent are only 68mm from the outside of the frame to the glass line. Internally glazed windows are 2mm thicker at 70mm.

This makes the Kawneer GT70 Slimline Renovation Window a very slimline window. Dimensions remain the same whether an odd or equal leg outer frame is used. Fixed light windows benefit from only a 38mm sight line. A typical mullion/transom sight line is only 76mm.

Other window dimension will vary depending on the style and design required.

Performance of the Kawneer GT70 Slimline Renovation Window.

The window is independently weather tested to BS 5368:1993

For an inward opening window, often regarded as less weather resistant than an outward opening, the performance criteria is impressive.

Air infiltration and water tightness are at 600 Pa, with Wind Resistance at 1200 Pa

A flexible window for a choice of installations and applications.

if your budget can stretch to the extra cost, you can have new windows in steel too.
Steel replacment window used commercially in a school.

Kawneer GT70 windows are suitable for existing prepared or punched openings. As well as composite and ribbon windows, the suite can integrate with curtain walling if required. There is a choice of vent profiles, restricted opening options, easy-clean options from inside the building as well as trickle ventilation provision if necessary.

Fixing can be carried out either with a direct fix through the frame or the use of proprietary fixing lugs.

This advanced steel replacement window offers an elegant solution to any old or new building where a traditional look window is required. Kawneer GT70 windows offer the latest technical specifications, flexible profile choices and all the advantages of insulated, high strength aluminium.

If you would like further information on the Kawneer GT70 slimline renovation window, please contact us.

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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