Colin’s Sash Windows Reviews
Colin’s Sash Windows is a UK-based manufacturer and installer of bespoke timber, aluminium, and uPVC sash windows and doors, operating since 2014. With over 12,000 projects completed and a 4.9/5 average customer rating from verified homeowners, builders, and designers, the company has earned a reputation for precision craftsmanship and reliable aftercare.
Below you’ll find genuine feedback from customers who have chosen Colin’s Sash Windows for their heritage sash window restorations, double-glazed replacements, and Aluspace aluminium internal doors. These reviews reflect our ongoing commitment to energy efficiency, acoustic performance, and period-accurate design.
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Colin Sash Windows is rated 4.9 out of 5 from 238 reviews, with 400 customers sharing their experiences.
Sash Windows Reviews
From heritage conservation projects to modern double-glazed sash replacements, our clients praise the balance between aesthetic authenticity and thermal performance. Many note reduced drafts, lower energy bills, and quieter interiors after installation.
“The sash windows are exactly what was promised – fantastic quality and service. Highly recommended!”
– James Smith, Tottenham
“Outstanding quality and service on our new sash windows! We’re thrilled and would recommend them to anyone.”
– Sarah Johnson, SW London
“We received top-notch sash windows, just as promised. Excellent service and quality!”
– Michael Brown, Truro
“Our new sash windows are perfect, and the service was exceptional. We’d recommend them without hesitation!”
– E Taylor, Lincs
“Exactly what we were hoping for with our sash windows – great quality and service. Highly recommend!”
– William Wilson, Exeter
“We couldn’t be happier with our sash windows. Fantastic quality and service all around!”
– Jessica Moore, Gloucester
“The sash windows are perfect, and the quality and service exceeded our expectations. Highly recommend to anyone!”
– D Anderson, Edinburgh
“Superb sash windows with great service to match! We got exactly what we wanted and more.”
– Laura Thomas, Wales
“From start to finish, we got exactly what we were promised with our sash windows – excellent quality and service.”
– Robert Jackson, Taunton
“Our new sash windows are fantastic! Great quality and service that we’d recommend to everyone.”
– Rachel White, Glasgow
“These sash windows are everything we wanted. Amazing quality and service – we’d recommend them in a heartbeat!”
– John Harris, Coventry
“Fantastic sash windows with impeccable quality and service. We’re very pleased and would recommend to others!”
– Christopher Hall, Ascot
“Our sash windows are just what we hoped for. Great quality, great service – highly recommended!”
– Hannah Scott, Penrith
“We couldn’t be happier with our new sash windows. Quality and service are both top-notch!”
– Amanda Martin, N London
“We received amazing sash windows with excellent service to match. Would recommend to anyone!”
– Sophia Young, Cumbria
“These sash windows are perfect, and the service was just as impressive. Highly recommended!”
– C Thompson, Devon
“Our sash windows are exactly what we were promised – great quality and fantastic service!”
– Megan Garcia, Tyne and Wear
“We got beautiful sash windows, just as described. Quality and service were exceptional!”
– Daniel Martinez, London
“The sash windows are everything we expected and more. Top-quality service too – would recommend!”
– Nicole Robinson, London
“Our new sash windows look amazing! The quality and service are both excellent. We’d recommend them to anyone.”
– Anthony Clark, Warwickshire
Aluspace Aluminium Internal Doors Reviews
Our Aluspace internal aluminium doors have become a popular choice among architects and interior designers seeking the Crittall-style aesthetic without the cost. Clients appreciate their slim sightlines, durable frames, and smooth operation.
“We couldn’t be happier with our new aluminium internal doors. The finish is perfect, and the service was seamless from start to finish.”
– Olivia Rodriguez, Cambridge
“Our aluminium internal doors are stunning, with exceptional craftsmanship. The entire process was smooth, and we’d definitely recommend them!”
– Matthew Lewis, Cornwall
“Excellent service and beautiful aluminium internal doors that really elevate our home. We’d recommend this company to anyone.”
– Benjamin Wright, Exeter
“The aluminium internal doors are of high quality, and the installation was flawless. Truly professional service!”
– Lily Green, York
“Great quality aluminium internal doors with outstanding service. We’re very pleased with the entire experience.”
– Paul Adams, Bristol
“The sleek design of our aluminium internal doors has transformed our space. The service was quick and efficient too.”
– Ava Baker, Durham
“From order to installation, the process was effortless, and the aluminium internal doors are perfect. Highly recommend their service!”
– J Gonzalez, Norwich
“The aluminium internal doors are exactly what we wanted—stylish and durable. Plus, the service was top-notch!”
– Mia Nelson, Shrewsbury
“Our new aluminium internal doors are beautiful and were installed with care. The whole team provided excellent service.”
– S Carter, Kent
“We are delighted with the quality of our aluminium internal doors. The service was professional and friendly throughout.”
– Thomas Perez, Bath
“These aluminium internal doors are both elegant and sturdy. The service was efficient, making the entire experience fantastic.”
– Chloe R, Chester
“The quality of the aluminium internal doors exceeded our expectations, and the service was just as impressive. We highly recommend them!”
– R Hill, Somerset
“The aluminium internal doors have added a modern touch to our home. We appreciated the attentive service from the team.”
– Ella T, Nottingham
“Our aluminium internal doors look fantastic, and the service was smooth and hassle-free. Couldn’t have asked for better!”
– Andrew Lee, Glous.
“Impressed by the durability and design of our new aluminium internal doors. The service was just as strong!”
– Scarlett Walker, Devon
“We’re thrilled with our aluminium internal doors! The quality and the service were absolutely first class.”
– J Young, Leics
“The aluminium internal doors are perfect, and the team went above and beyond to ensure everything was right. Excellent service!”
– V King, Trowbridge
“These aluminium internal doors have truly enhanced our interiors. The service we received was exceptional from start to finish.”
– Mark Wright, Herts.
“Our aluminium internal doors were delivered on time and installed perfectly. Fantastic service and beautiful results!”
– Lucy Thompson, Lincs
“The quality of the aluminium internal doors is matched only by the quality of the service. We are very happy customers!”
– K Ahmad, Luton
Verified Reviews & Ratings
As of October 2025, Colin’s Sash Windows holds an average rating of 4.9 stars across more than 238 verified reviews from residential and trade customers. All testimonials featured on this page have been collected directly from verified installations and manually verified by our team for authenticity.
Why Homeowners Trust Colin’s Sash Windows
Customers consistently highlight our attention to period details, swift communication, and energy-efficient glazing. Every project is supported by our in-house team of designers and installers who ensure precision fitting and aftercare across London, Surrey, Kent, and the wider UK.
Upgrade Your Home with Our Premium Sash Windows
Discover the timeless elegance and superior craftsmanship of Colin Sash Windows. Enhance your home’s beauty and energy efficiency with our expertly designed sash windows.
