Costello Windows Reviews 

Really happy with the service provided
The installation team were excellent
Very thorough and efficient
I’d definitely recommend them

Liam, Willie and the other chap that I can't remember his name were fantastic. The doors and windows are of excellent quality. I would highly recommend this company.

From the first point of contact the service was excellent. My windows were delivered when they said they would be. The fitters were so professional in their workmanship to their meticulous finish . Couldnt speak highly enough of them . Well done

James put in the door very well. I am very pleased with it. One small issue - a small bit of skirting board looks loose. Apart from that the work was excellent and James was very polite and professional

Fabio & his colleague fitted my beautiful door last week. They were very clean & quick in fitting it. They sealed it very well. I had an issue with the lock (my fault) & their serviceman came out this morning to recitfy it. Couldn't rate them enough. Very good service & aftersales.

I recently had the pleasure of working with Costello Windows, and I couldn't be happier with the results! From start to finish, the service was outstanding. The team was professional, knowledgeable, and attentive to my needs.

A special shoutout to James, the fitter, who did an exceptional job installing my new door.His attention to detail and craftsmanship were impressive, and he ensured everything was perfect before leaving. It’s clear he takes pride in his work, and it made all the difference.

Thank you, Costello Windows, and especially James, for transforming my home with such beautiful door I highly recommend them to anyone looking for quality service!

James from Costello Windows installed a new door for us. Very professional, had the whole thing done by himself on the day. New door is great, no issues at all. Would definitely recommended/use again.

Had the lads from Costello windows they done a good job im happy with it and they cleaned up well after the job was done would highly reccomend them

Very happy with the installation.Pedro and his colleague were good to deal with.

We are delighted with out windows and door. The whole process was very smooth. Willy and George were our installers and they were very good. Would recommend.

The installation team of Gerry & Jack were fantastic. Keen eye for the details in an old stone cottage that doesn’t have a square or true angle in it. The finish was extremely well done. We did have to wait for the doors longer than we were first quoted, but the sales team did say the combination of finishes we were looking for would increase the production time. Overall we were more than happy.

Found Costello windows very easy to deal with. Breda in sales was excellent and very responsive. Our fitter too did a great job. Very happy with it. Would definetly recommend.

Good quality door, had to wait 16 weeks after paying deposit for door installation and when they came they forgot door key so we where unable to open door for few days, U think that be a basic thing to remember to bring

Excellent service from the installation team. Very diligent and extremely professional. I would have no issue in recommending them,

Very happy with the service from the moment I did an online door. I spoke with Breda via email and a phone call and she got the ball rolling straight away. I wasn’t ready for my door to be fitted before Christmas when they rang me and they were more than happy to store it until I was ready for fitting. I would highly recommend Costelloe for doors as they were very professional and so were both of the men who fit my front door today.

We recently had our old door replaced with Costello's and I have to say from start to finish it was a great experience. From Eddie calling to talk us through the different options, and measuring up, the people in the office taking payment and organizing logistics, to finally James who fitted on Monday. Our house is 70 years old and as you can imagine the walls and frames are a not uniform, which made fitting the door extremely difficult. James spent the day here doing everything he could to make the door fit and was so patient, careful, and tidy every step of the way. We are thrilled with our new, well overdue upgraded door and I would be delighted to recommend Costello's and also return for any of our window and door needs in the future.

After a few quotes with other companies I chose Costello Windows because they said they could fit my front door within 8 weeks whereas other companies said 2-3 months minimum waiting time. The whole experience from visiting the showroom, choosing my door to it being fitted was within 6 weeks making it a very worthwhile choice! The fitter turned up on time and completed the job in approx 3 hours, he made a fantastic job of it and I’m absolutely delighted with it! Can highly recommend Costello Windows

We were very happy with the quote we got for windows and doors. Pedro and Reginaldo were our fitters. They were excellent workers. Tidied up as they went along. Very pleasant to deal with

I recently had a new front door fitted. It was a great experience from staff in the show room to getting the door measured and fitted. Very professional fitting and looks amazing. I would recommend to everyone.

I recently had all of my windows and doors replaced by Costello windows. Had really positive and professional experience. Hayden was very helpful and patient helping me choose the right ones. Timmy was the fitter who was in and out in less than 3 days. Himself and his team cleaned up afterwards and left the place spotless. It is like I have a brand new house! I am thrilled with the product and would highly recommend Costello windows.