Frontier Windows Reviews 

I had a terrible experience with this windows company. The quality of the product was far below what was promised The installation team was unprofessional.
On top of that, customer service was almost impossible to reach. When I finally got someone on the phone, they were dismissive and offered no real solutions. I’ve wasted time, money, and patience dealing with this company. I strongly recommend choosing a different provider.

Extremely disappointed. The windows are very bad quality—flimsy materials, poor sealing, and already showing problems. For the price I paid, this is unacceptable.

The window experience went smoothly on both properties however there was issues with the door at both properties. I highly recommend them for windows but not the doors.

Post sales follow up for malfunction, non existent, despite persistent calling, texting, whatsApping = zero answers over days and weeks, some promise of coming one day, never turned up and no message or excuse. Product initially ok but STAY AWAY from this company

Great customer service and great product. Will definitely use them again.

I recently had my windows replaced by Frontier Windows, and the entire experience exceeded my expectations from start to finish. The team brought an impressive mix of professionalism, craftsmanship, and genuine care for their work.

From the first consultation, it was clear they weren’t just trying to sell windows—they wanted to find the right solution for my home. The installation crew arrived on time, worked efficiently, and left everything spotless (a rare thing these days!). The new windows don’t just look great—they’ve already made a noticeable difference in both comfort and energy efficiency.

What really stood out was their attention to detail and pride in their work. Every corner, every seal, every finish looked flawless. Frontier Windows doesn’t just install windows—they upgrade your whole living experience.

If you want quality, honesty, and craftsmanship that lasts, Frontier Windows is the company to trust.

All in all, very pleased with the complete job, i ordered black windows, and the finished product is great, it stands out from the rest of the street

The price was very fair, and Vik was key in orchestrating things to ensure a smooth process from start to finish, even sending a crew out when a minor issue came to my attention later on which was then amended.

Have done my fathers and my own windows with these people so very confident they can provide a great service to your liking.

Just had a new bay window fitted by Frontier Windows, and wow — what a difference! The whole process was smooth from the start. The rep who came out really took the time to explain the styles and options, which helped me pick exactly what I wanted. On the day of the install, the fitters were super friendly and worked so neatly — not a bit of mess left behind. The new bay window looks stunning, fits perfectly, and really opens up the room. Couldn’t be happier with the result!

Frontier Windows has exceeded my expectations from start to finish.The communication was clear, the installers were respectful of my home and the finished product looks amazing. You can clearly tell they take huge pride in their work. Absolutely amazing, I’m glad I made the right choice!

The team at Frontier windows are beyond amazing. They just finished my windows and doors and I am absolutely in love with my homes new look. Not only are they professional but they listen to your wants and needs. One of the things I also liked about this company is their transparency and honesty, if something doesn’t seem right they will give you their recommendations and then it’s up to you. I will recommend frontier windows anyday, anytime anywhere. Thank you team!

Vik and his team came to fit triple glazed windows. From measuring the original windows to coming back to fit the new ones, all work was carried out carefully and done well. The team worked very hard and fitted all 4 windows (including a bay window) all within one day. The windows look fantastic.

Professional installation carried out to a high standard. I was kept regularly updated with the manufacturing process, the fitting was carried out on time and to a high standard. The window fitters were clean tidy and helpful .. Highly recommend this company, many thanks to you .

⭐️⭐️⭐️⭐️⭐️ Outstanding Window Installation Experience!

From start to finish, my experience with Frontier Windows was absolutely exceptional. The entire process—from the initial consultation to the final walkthrough—was smooth, professional, and stress-free.

The sales team was knowledgeable and patient, helping me choose the right windows for my home without any pressure. On installation day, the crew arrived right on time, treated my home with care, and worked efficiently while maintaining a spotless workspace. They removed my old windows, installed the new ones, and left everything cleaner than they found it.

The craftsmanship is truly top-notch. The new windows fit perfectly, look beautiful, and have already made a noticeable difference in both comfort and energy efficiency. I was especially impressed by the attention to detail—the trim work is flawless, and the seals are airtight.

What stood out most was the professionalism of the team. They were courteous, respectful, and took the time to explain the features of my new windows and answer all my questions. It’s rare to see such pride in workmanship these days, and it gave me complete confidence that I made the right choice.

I highly recommend Frontier Windows to anyone considering window replacement or installation. Their combination of quality, expertise, and customer service is unmatched. I’ll definitely be calling them & recommending them to friends & family.

They were so quick and efficient with their quote. They really sold me when I had my first consultation. Awais was amazing from the start and by the time we had it installed we had realised that he beat the competition in pricing by miles. (The other company got back to me 3 days later).

Will definitely be using him again for our extension.

Sales staff were informative and knowledgeable, understood my needs and did not take hours like other companies
Decided to go ahead with Frontier Windows after seeing their window and getting a good deal
Fitting was absolutely seamless and without problems.
Really pleased with my decision

Very happy with quality and speed of delivery and service, would highly recommend.

Called them out for one window replacement, gave me a good price and was happy once again

The whole exprian was great. Vik and the team were great. Everything was completed in the less time than what was quoted. I highly recommend Frontier Windows

Vik and his team were professional and friendly and all work was completed to a high standard.
I would highly recommend them.

Abysmal customer service and awful windows, we've had so many issues with them and 5 months later still not resolved, they completely ignore emails and phone call, stay well clear and save your money . Wonky windows not fitted correctly, we even had a window open the wrong way, iwould upload the poorly installed windows to see but it won't let me

Updated in response to the not so correct reply from Frontier:-
So its quite a phenomenon to receive a response from Frontier - albeit it took a poor review to prompt some sort of contact from them considering the massive amount of unanswered phone calls, messages and emails I have sent.
Firstly - I have never complained about the bathroom window being the wrong way around. However you did install the wrong glass originally regardless of the opening because you supplied frosted glass with lead when none of the rear windows has lead. I didn't mention this in the original review but as you are trying to use this as a reason to toot your own horn, I feel it only fair to correct you. That same window is still not finished either as all the expanding foam is still visible and the internal flashing hasnt been done. Something which has been brought to your attention multiple times.
Your replacement of 8 panes of glass "free of charge" was because by the admission of your various fitters and supervisors on the day, the lead was poorly and unevenly spaced - which you checked with a tape measure. The comment that you "allowed" us to retain a "substantial portion of the balance" is completely laughable. Firstly why would we settle the balance when you agreed it wasnt satisfactory & secondly you knocked off £50 per pane which amounted to £400 - for a nearly £9000 job i would hardly call that substantial.
The day you came to replace the panes, you were late. And you didn't replace them all as the top windows for downstairs bathroom were not on the van and the fitter said they would have to come again - which is why the lead doesn't line up with the larger panes. We have never confirmed the design, you were told on the day it still wasnt right.
You then sent an employee, I believe to be a manager or director (the gentleman who appears in your Facebook videos) who was meant to remove these panes, take them to the factory to rectify and then return. He came but they wasnt able to carry this out due to issues with the factory. He had a lengthy argument on the phone with someone at said factory and then informed my wife that he wasnt able to do as planned because the glass hadn't been made due to sickness. He was deeply apologetic in fairness to him and promised it would be sorted the following week. We were however on holiday so he said it would be upon our return. And this is what we are still waiting for. There are so many emails and messages sent to you so if you believe any of your own response to my review, why haven't you replied to my emails to say this?
The other issue with the inside trim of many of the panes not fitting correctly was also confirmed by the same man who took photos and said would be replaced when he returned. As well as finishing the bathroom flashing.
Again, if you believe your own version then why haven't you ever responded and why haven't you asked for the balance to be paid? There is evidence staring you in the face that these windows aren't finished or dont line up so im really not sure how you think you can argue the case. Emails and images have been sent with times and dates, they have never been correct since you did the installation.

Thank you Frontier Windows! Amazing service. Right on time and provided all the relevant information for what we needed