A Aujaili – Islington, N19
Good response time, good work, professional office!
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G Morris – Wood Green, N22
Excellent cleanliness, quality window and very good customer service
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A Heinson – Leyton, E5
The product is very good!
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Westbourne Park Road, W2, Westminster, West London
J Castle – Westminster, W2
“Core Sash Windows put two double sash windows into my flat and the difference is amazing. The look is excellent
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Aylesbury Road, SE17, Southwark, South East London
C Field – Southwark, SE17
"Great service from start to finish. Helpful and informative staff. The workmen who carried out the work were fantastic- not
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Wavertree Road, E18, Woodford, East London
L&R O’Neill – Woodford, E18
"Core Sash Windows carried out the replacement of our ground floor bay window some time ago and not only were
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Luxor Street, SE5, Lambeth, South East London
S Cartwright – Lambeth, SE5
"The windows are of an excellent quality and the workmanship is amazing. My neighbour who suggested you after seeing your
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Speldhurst Road, W4, Ealing, West London
R Wood – Ealing, W4
"Excellent workmanship with reliable workers. They cleaned up every day and did everything they could to minimize disruption. The windows
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North View Road, N8, Crouch End, North London
R Townsend – Crouch End, N8
"My new windows are great, no more draughts and blessed quiet! All the team were great, from the surveyors to
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Cardozo Road, N7, Islington, North London
T&J Hare – Islington, N7
"Core has been great, our windows and door are perfect, the installation team were very professional and did a great
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Kenninghall Road, E5, Hackney, East London
E White – Hackney, E5
"I had two french doors replaced. Right from the initial visit I felt Core was a company I could trust.
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Albert Road, SE20, Penge, South East London
J Baker – Penge, SE20
"Very professional service throughout from Core Sash Windows. The quality of the product is excellent and the on-site craftsmanship was
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Powerscroft Road, E5, Hackney, East London
S Singh – Powerscroft Road, E5
"I cannot eulogise enough about how fantastic Core Sash Windows are. Sean Mac Anbhaird and his team are consummate professionals
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Woodlea Road, N16, Hackney, North London
G Bulcraig – Hackney, N16
"Good, on time, nice & tidy"
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Valentine Road, E9, Hackney, East London
T Rubenstein – Hackney, E9
"Pleasant and professional staff"
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Constantine Road, NW3, Camden, North West London
M&M Newlyn – Camden, NW3
"We are very happy with our new windows. Your men are punctual, hard working with attention to detail, polite and
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Hazellville Road, N19, Islington, North London
N Al-Aujaili – Islington, N19
"Good workmanship and threw in some extra (minor) building work (knocking down patio door step) for free. A little pricey
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Hemingford Road, N1, Islington, North London
P Willis – Islington, N1
"This was a large job, all our windows being replaced or draft-proofed in a conservation area. It took slightly longer
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South Road, SE23, Forest Hill, South East London
A Clare – Forest Hill, SE23
"I was really pleased with the workmanship and professionalism of the men on site. They were punctual, diligent and worked
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Schoolbell Mews, E3, Tower Hamlets, East London
R Butterworth – Tower Hamlets, E3
"Excellent work with a tricky installation and a great finish. The fitters were clean, tidy and very professional."
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Antill Road, E3, Tower Hamlets, East London
A Polson – Tower Hamlets, E3
"I just wanted to say a big thank you for replacing our terrible 70s style plastic windows with authentic sash
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Lower Richmond Road, SW14, Richmond, South West London
D Gee – Richmond, SW14
"Core did a fantastic job on my new front window - they matched the original Edwardian design exactly and we
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Gaywood Road, E17, Walthamstow, East London
L Woodhouse – Gaywood Road, E17
"The quality of the work was excellent, as was the communications from the company. Everyone involved - the first assessment,
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Lower Richmond Road, SW14, Richmond, South West London
J Titchener – Richmond, SW14
Services Provided: Double Glazed Sash Replacement and Draught-Proofing
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Haberdasher Street, N1, Hackney, North London
C De Cruz – Haberdasher Street, N1
"As far as the three (windows) you have already put in – well I am in love with them!! First
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West End Lane, NW6, Hampstead, North West London
A Ward – Hampstead, NW6
“We had our front sash bay windows replaced, and back windows draught-proofed. The team was extremely professional, turned up on
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Tufnell Park Road, N7, Islington, North London
J Hope – Islington, N7
"I just wanted to say thank you. The doors/windows look great. Your team was very efficient and really tidied the
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Leyspring Road, E11, Wanstead, East London
S Landels – Wanstead, E11
“Such a relief to deal with a professional and friendly company with a quality product. Given honest and clear advice
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Priory Road, NW6, Camden, North West London
J Muller – Camden, NW6
“I am very pleased with my sash windows from Core Sash windows. From customer service, to the product to the
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Campbell Road, E17, Tower Hamlets, East London
T&J Williams – Tower Hamlets, E17
“Excellent. Clear advice, no pressure and an excellent product! Great fitter – friendly and helpful.”
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Rattray Road, SW2, Lambeth, South West London
J Voss – Lambeth, SW2
“We are very pleased with our new windows – it’s the coldest June ever so we had to put on
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Middle Lane, N8, Crouch End, North London
T Jones – Middle Lane, N8
“We’ve hired Core Sash Windows on two occasions to upgrade old sash windows at our Victorian property in Hackney. We
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Haberdasher Street, N1, Hackney, North London
K Harrison – Hackney, N1
“Thanks guys for the great job you did last week. Our double glazed windows in the bedrooms look amazing, it
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Yerbury Road, N19, Islington, North London
A Walpole – Islington, North London
“We were very happy with the installation. A prompt, friendly and efficient service and our new windows look great.”
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Netherdown, N10, Muswell Hill, North London
I Foster – Muswell Hill, N10
“The windows are now finished and we are so happy with them – they look absolutely beautiful and we’ve noticed
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Beck Road, E8, Hackney, East London
C Marshall – Beck Road, E8
“We’ve now got windows to be proud of – thank you. I’ve been really impressed not just by the quality
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Allen Road, N16, Hackney, North London
P Parkinson – Allen Road, N16
“Having suffered many times over the years from unreliable, shoddy and expensive buildings maintenance workmanship in London, Sean and Dan
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Woodlea Road, N16, Hackney, North London
T Greenbank – Woodlea Road, N16
“Our sash windows were old and very knackered (e.g. painted shut, weights missing or broken etc.). We didn’t want to
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Antill Road, E3, Bow, East London
G Soklakov – Antill Road, E3
“We are really happy with the work done by Core Sash Windows. The team was friendly and professional and did
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St Philip's Road, E8, Hackney, East London
A Gough – Hackney, E8
“We are thrilled with our new windows. Immediately we had a quieter, more solid house and they have given the
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Tetherdown, N10, Muswell Hill, North London
N Phillips – Tetherdown, N10
“Core Sash Windows conducted a complete double glazed refit of our period windows to our family home, and we could
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Defoe Road, N16, Hackney, North London
R Pendry – Stoke Newington, N16
“We were very happy with the work completed by the Core Sash Windows team. They were polite, punctual and hard-working,
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Raleigh Road, N8, Harringey, North London
F Byrne – Raleigh Road, N8
“You said my unloved and neglected original sash windows would look like new after you’d finished with them and they
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Ambler Road, N4, Islington, North London
M Massey – Islington, N4
“I love my new windows. My house is suddenly much quieter and warmer which is brilliant. Having any workmen in
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Ryland Road, NW5, Camden, North West London
D Tinley – Camden, NW5
“We found Core Sash Windows to be efficient and reliable. We had five old windows replaced with new double glazed
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Torriano Avenue, NW5, Camden, North West London
R Lockett – Camden, NW5
“Very impressed by the Core Sash operation. Staff efficient, competent courteous and hard working. Arrived on time and cleaned up
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The Chine, N10, Muswell Hill, North London
G Grieve – The Chine, N10
“We had recently our sash windows replaced with new doubled-glazed ones and draught proofed. The speed and tidiness of Core
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Amhurst Road, E8, Dalston, East London
H Snowdon – Dalston, E8
“I never expected – only hoped for – the level of service I received from Core Sash Windows. The admin
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Holland Road, W14, Kensington and Chelsea, West London
Y Yang – Kensington, W14
“I am pleased to write this letter of recommendation for Core Sash Windows. I have used this company’s service for
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Liverpool Road, N7, Hoxton, North London
B Schmid – Hoxton, N7
“From the first contact working out the quotes and throughout the job, Core provides the perfect service for sash windows.
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Gibson Gardens, N5, Islington, North London
T Steele – Islington, N5
“We recently used Core Sash Windows for new double glazed sash windows in our Victorian flat in Stoke Newington. Our
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Balfour Road, N5, Highbury, North London
D Russell – Highbury, N5
“We used Core Sash Windows for a complete refurb of all the windows of our Victorian house in High bury.
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Hewlett Road, E3, Bow, East London
O&A Parrish – Bow, E3
“Left confused about what to do after receiving conflicting advice and quotes for new sash windows from a number of
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Merton Road, SW18, Wandsworth, South West London
R Harding – Wandsworth, SW18
“Core refurbished my flat back in 2009 and did wonders installing three new double glazed sashes, two new windows for
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Queen's Avenue, N10, Muswell Hill, North London
J Burgess – Muswell Hill, N10
“Sean, Dan and the team were punctual, friendly, and hardworking and always kept me up-to-date with the work and how
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Ufton Grove, N1, Haggerston, North London
L Thompson – Haggerston, N1
“Sean, Dan, George and the team did an excellent job in restoring and draught-proofing four ill-fitting windows, some of which
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St John's Way, N19, Holloway, North London
K Marles – Holloway, N19
“Thanks so much for the draught proofing work on our windows. The work was done with the absolute minimum of
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Middle Lane, N8, Crouch End, North London
R Boylan – Crouch End, N8
“It’s incredible! I can’t believe the difference it’s made. I live on a busy bus route which meant noisy and
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Roseberry Avenue, EC1, Finsbury, Central London
A Jose – Finsbury, EC1
“I was thoroughly impressed with everyone I dealt with at Core Sash Windows. Not only were the windows substantially improved,
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Ladbroke Grove, W11, Kensington and Chelsea, West London
William Gaze Ltd – Kensington and Chelsea, W11
“Thank you Core Sash Windows, your team headed up by Dan were absolutely brilliant. Always on time, very professional and
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Finsbury Park Road, N4, Hackney, North London
S Keeble – Finsbury Park Road, N4
“I have no doubts or hesitation in recommending Core Sash Windows to everyone looking for craftsmen to renovate their windows.
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Wightman Road, N4, Harringey, North London
Martin L – Harringey, N4
“I used Sean and his team to install draught proofing around our old sash and casement windows. The work was
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Furness Road, NW10, Brent, North West London
P&T – Brent, NW10
“After contacting Core Sash Windows, they responded efficiently – Sean and Daniel came round within a week and provided us
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Lower Marsh, SE1, South Bank, South London
L – South Bank, SE1
“Core Sash Windows did a very professional job replacing my single glazed windows with double glazed ones, at a very
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Marriott Road, N4, Finsbury Park, North London
S Shipman – Finsbury Park, N4
“I just wanted to thank you and Sean for your work over the last couple of months – the internal
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Prince Of Wales Terrace, W8, Kensington and Chelsea, West London
E Jones – Kensington and Chelsea, W8
“I was pleasantly surprised by the level of tidiness when work ended each evening. The workmen were friendly and polite
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Alvington Crescent, E8, Hackney, East London
D Baker – Hackney, East London
“Sean and Dan’s team provided a service beyond expectation – reliable, punctual, considerate and friendly. As for the standard of
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Whether you'd like some expert advice, a free site survey, or just a chat about your options, we are always happy to help.

Unit 3 Marshgate Business Centre ,10-12 Marshgate Lane London E15 2NH

020 3302 2060 / 020 8519 2763




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