Testimonials

“Core Sash Windows did a very professional job replacing my single glazed windows with double glazed ones, at a very reasonable price. They were very polite and friendly and tidied up at the end of each day. The new windows look great and have made a real difference to noise levels, with no more draughts or rattling - worth every penny”

Liz (SE1)

“After contacting Core Sash Windows, they responded efficiently - Sean and Daniel came round within a week and provided us with an estimate. We had Victorian sash windows in need of a complete overhaul. We now have fully functioning and good looking windows making our home look great. Sean, George and Rad, were a pleasure to have as workmen in our home. Not only did they do a splendid job with our windows, they were reliable, friendly, hard working and always cleaned up afterwards. We would not hesitate to use Core Sash Windows again and indeed would recommend their work!”

Paula & Tracey (Harlesden)

“I just wanted to thank you and Sean for your work over the last couple of months – the internal doors you fitted with glazing and hinged to fold back look splendid. I would have no hesitation recommending you to other clients for your excellent standard of workmanship and good value.”

Simon (N4)

“I used Sean and his team to install draught proofing around our old sash and casement windows.  The work was carried out professionally, on-time and for a good price.  The results were excellent, the windows no longer rattle and draughts are gone.  We also noticed an immediate improvement in the effectiveness of our central heating, which is now more controllable and generally more comfortable.   I was very satisfied with work and how it was done and would be happy to use Core Sash Windows again.” 

Martin L. (Hampstead)

“I was pleasantly surprised by the level of tidiness when work ended each evening. The workmen were friendly and polite and did a fantastic job. My windows were renovated and painted beautifully. I would not hesitate to recommend Core Sash Windows to anyone.

Elizabeth (Islington)

“Sean and Dan’s team provided a service beyond expectation - reliable, punctual, considerate and friendly. As for the standard of work - having repaired and draught-proofed our thirteen sash windows as well as replacing two double glazed casements, we were so impressed with the quality of workmanship and commitment to the job, we asked them back for another major refurbishment job on our house.

Don (E5)