Windowline
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Industry experts for over 30 years, we pride ourselves on delivering quality solutions and the peace of mind for owners and strata managers. Windowline was started by Gary Stevenson in Sydney in 1989. At that time, he realised clients wanted the peace of mind that they were getting window and door solutions that were not only the best quality, but the best value for your money.

Windowline's focus has always been to provide a service that exceeds our clients' expectations along with a result you'll be delighted with for many years to come. It's a commitment that's been at the heart of our business for more than 30 years. We partner with many top strata managers. Here is just some of the positive feedback we've received from our clients, who are more than happy to talk to you about the quality of our work.
Services
Apartment window and door replacement is a specialist job, where high-quality products, professional service and efficient processes are key. As industry leaders since 1989, Windowline is the trusted choice for strata window and door installation in New South Wales and Queensland. Strata building work can be complex, messy and disruptive for your residents.
We're experienced in working with body corporates and strata management teams to provide innovative solutions for mid to high-rise apartment buildings. As our solutions are tailored to your needs, you can choose from the full spectrum of products including aluminium sliding or double-hung windows and sliding doors, as well as options such as flyscreens and laminate to reduce heat or sound.
Our processes are designed to ensure your project runs smoothly and you know what to expect from quote to completion. A written agreement is required for all projects, and we can provide you with a range of options. The best agreement for your project can depend on your location [NSW or QLD] and the size or complexity of your project.
Some companies only deal with a single window or door manufacturer, meaning they make recommendations based on a limited product range. As it's impossible for any one manufacturer to offer a range of products to suit every need, Windowline works with all leading manufacturers, which allows us to provide products based on what's best for your apartment building.
When carrying out strata window and door replacement, you need a partner with the highest standards of safety and environmental awareness. Our processes are designed to minimise disruption, noise, dust and waste. Work can be completed in stages if necessary. We also aim to keep our worksite as clean as possible by removing old building materials and rubbish promptly.
Reviews (9)
Genna Merrin
Genna Merrin
Jan 19, 2022
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Very poorly run company, installed new windows in a block of 8 units, every single unit has been given mismatching handles, black, grey and white. At no time did they follow up to ensure we had matching handles.
The men, when doing the work removed a fence panel for access and just left it propt up against the fence and claim that they didn't remove the panel. Have not bothered to come back and fix it, a child or an elderly person could fall and injured themselves badly due to window lines neglect.
If thinking of having Windows installed, go to anyone but these people, worst customer service
Rohan Gowland
Rohan Gowland
Dec 07, 2021
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The Windowline installers were polite, friendly and hassle free. Left our apartment clean afterwards and the new windows look great đź‘Ť. Areas for improvement: A couple of the windows need the springs adjusted, as they fall open if not locked. Windowline advised how to adjust it, but the screws in question are not easily accessible, so we still have this issue. The other thing that could be improved is that, due to government regulations, the bottom window has to be blocked from opening too wide, which means you have to open the top window if you want your windows fully open for ventilation. But
Lynette Laming
Lynette Laming
Oct 06, 2021
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Window installation ok but tradesperson removed a blind fitting from premises and wouldn’t take responsibility to replace so couldn’t reinstall blind.
Service: Window installation
Peter Chappell
Peter Chappell
Sep 26, 2021
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Positive: Professionalism, Quality
Replaced original foyer doors of unit block. Completed in one day and the new doors work perfectly. Greatly enhanced security.
Service: Door installation
Kat
Kat
May 08, 2021
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We have just had our windows replaced in the entire complex and I must admit I was worried about the disruption.
I have been pleasantly surprised as the entire process has been seamless and all representatives at Window line have been courteous and professional.
I’ve worked in the real estate industry for the last 16 years and would highly recommend them to any strata company looking for a high quality service with minimal disruption to occupants!
Thanks again!
Julia Smerdon
Julia Smerdon
Apr 21, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
Windowline replaced all windows and doors within our 12-unit apartment complex. They were great to deal with, maintained good communication with all tenants and owners and have made a huge difference to the look of our apartment block. I have no hesitation in recommending them for any window replacement works.
Services: Window installation, Door installation
Frank Solsky
Frank Solsky
Dec 08, 2020
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I have known Windowline for many years and when I owned my own
Strata business I only used them for window replacements in my buildings. Never had a problem with any of the jobs.
Last month they replaced 93 windows in a strata building that I am chairman of and as always there was not one problem. They are such a pleasure to work with and their standard of work is of the best.
Cannot recommend them highly enough.
Todd Procter
Todd Procter
Jul 07, 2020
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I am so pleased with our new windows and how this job was handled from start to finish.
The office manager and our project manager’s communications were flawless. I know there is always a lot going on in the background and I wanted to recognize these two. To top it off we have a couple of professional installers in our home going about their business with joy and happiness.
I recall Windowlines motto about communications and striving for projects to run as smooth as possible – well they nailed it.
Mapps A.
Mapps A.
Nov 29, 2019
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Avoid.
Came home expecting a complete job. Instead, our bedroom windows had been half installed leaving a gaping floor to ceiling hole in the middle of winter.
Tools were left everywhere, including a stanley knife on my bed. Window frames had also been left in our lounge room for several days.
Came home a seperate day to find that our front and side doors had both been left open whilst the team had gone off to lunch. So anyone could have accessed our apartment.
After weeks, there had been no clean-up to the common areas, with shards of glass and wood splinters being left across all walkways