About Competitive Windows

Competitive Windows Ltd is a Jersey company that was first established in 2009.  As we approach our 12th year of trading we have carefully built up a team of highly skilled professional fitters who have a vast wealth of  knowledge and experience.

Whether it’s PVC windows or one of our composite doors that you need; you can rest assured that we only use the very best products so that you can enjoy a stress-free installation.  We strive to be the best and we are always at the cutting edge when it comes to new products.

Meet The Competitive Windows Team

Behind all great companies there are always great people.  Meet Jason and Hilary, the faces of Competitive Windows.

Jason Derrien
Jason DerrienManaging Director
Jason has been in the window fitting industry for over 29 years. During this time he has gained a wealth of knowledge and expertise. He founded Competitive Windows 15 years ago and been responsible for the company becoming one of our industries leading figures on the island with a fantastic reputation in both the private and commercial sectors.
Hilary Derrien
Hilary DerrienSales Director
Hilary is Jason’s wife and has been working behind the scenes and supporting the family business. Hilary will be your first port of call when you get in touch with Competitive windows. And has now become a valued member of the team. We believe Hilary is the only female window advisor on the island and is welcomed by our valued customers.

Find Out What Our Satisfied Customers Think

“If you need a window fitter I can highly recommend this company and there fitters .Just had this slider ordered and fitted and the work was carried out in a very professional manner .Jason your staff are a credit to you well done .”

Angela T

“From start to finish I have been looked after so well by Jason & his team. The whole process was made so easy & nothing was too much trouble. Any home improvements can be stressful, but I can honestly say it was a walk in the park with this company. The fitters, Paul & Zac were friendly, courteous & very respectful of my home. Minimal mess & always left the place tidy & most importantly safe. Very patient with my two very excitable dogs too ! The price for my windows & door reflect the company’s name perfectly – I had previously been quoted a lot more ! I can highly recommend Jason & his team – one very happy & warm customer.”

Ceri B

“I’m absolutely delighted with my new front door from Competitive Windows. The size of the door and frame was proving difficult to find a company who didn’t find this a problem. Jason visited and measured up, gave me lots of options on fittings, glass etc and true to his word it was fitted when he said it would be.
Andy made a great job fitting it an was extremely clean and tidy.
I’d have no hesitation in recommending them.
Thanks guys, for giving me a classy door, taking away my old one, which let in the draughts, and hopefully decreasing my electricity bill!!”

Maggie M

“They replaced a patio door and kitchen window for me great service and very competitive price.”

Terry S

“After all the hassle of trying to get planning permission to change my rotten windows and not getting anywhere, I decided to get secondary glazing. Jason was so helpful in getting it organised. Jason said it might be a few weeks but as soon as the order came in, he arranged for one of his colleagues to come round and get it fitted which only took a couple of hours. Even though it’s only been a couple of days I have noticed a huge difference. Thanks Jason and team!”

Helen L

“Not often I’m moved to wax lyrical about the service I’ve received but I’m delighted with the way Competitive Windows responded to my enquiry about a broken garage door. A late evening reply to my first message was a pleasant surprise and to have the repair completed by early the following afternoon was above expectations. Highly recommended!!”

Craig M

“Just had my new electric roller door fitted on the garage and it looks the business. The boys turned up on time, did a fantastic job and cleaned up after themselves, taking the old garage door away. First class service and would recommend them to anyone! Our neighbours have already been in touch with the boys to get theirs done!!!”

Emma C

“We are really happy with the quality of the windows and the professionalism of the team and would definitely recommend them to friends and family. Thank you Jason, Andy, Paul and Dan from Competitive Windows Limited.”

Trisha B

“Just used this company to replace 11 Windows fantastic service, fitting and product all windows were fitted with lead trays at minimal cost.
Thank you so much for a professional job and great product, it’s good to know that we have a company in the island who offer such a great service. Well done guys see you next week for phase 2.”

Ken S

“I have used Jason and his team twice now. Service, price and quality of workmanship has been 110%. I would use them time and time again and highly recommend accordingly.  Thank you for a great job.”

Amanda R

“My Wife and I are absolutely delighted with our new windows & doors.  All the Team have worked so hard and the results are fantastic. We highly recommend Competitive Windows, they have done a brilliant job. Thank you guys.”

Chris T

“Very efficient service. Would definitely recommend.”

Rebecca L

Recent Projects

We are proud of our work and would like you to take a look at some of the recent projects that we have undertaken

Competitive Windows

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Get A Quote Today

Get in touch with Competitive Windows today and get your next project underway with the professionals!