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Business Details
24 Years
experience
Your Trusted Partner for Home Improvement Solutions
Established in 2002, S & K Windows is a family-run business based in Northallerton, North Yorkshire. We specialise in the supply and installation of high-quality windows, doors, conservatories, and roofline products across North Yorkshire, Durham, and Cleveland. Our team prioritises a professional approach, offering tailored guidance to help customers select products that complement their properties. All quotations are provided free of charge by our owner, Stephen Darby, with no deposit required and payment only upon completion. We focus on energy-efficient solutions, including A-rated windows and triple glazing, ensuring durability and thermal performance.

Our commitment to quality is reflected in thousands of satisfied customers and positive testimonials highlighting our attention to detail, cleanliness, and competitive pricing. We operate a showroom in Northallerton and offer virtual tours for added convenience. Customer satisfaction remains our priority, supported by transparent communication and a no-pressure sales approach. Our services are designed to enhance both the functionality and aesthetic appeal of homes, with flexible financing options available to suit various budgets.
Services
Double Glazed Windows Conservatories Roofline Products Front Doors Bifold Doors
Details
  • Year established: 2002
Highlights and features
  • We are a family-run business with over 20 years of local expertise.
  • Free quotations provided directly by our owner, Stephen Darby.
  • No deposit required payment only upon completion and satisfaction.
  • Energy-efficient solutions including A-rated windows and triple glazing.
  • Consistently praised for professionalism, cleanliness, and competitive pricing.
What people say
Excellent service Professional and friendly No mess left Highly recommended Competitive pricing
Services
Double Glazed Windows
Our double glazed windows, crafted from REHAU 70mm profiles, combine energy efficiency with durability. Designed to reduce heat loss and noise, they enhance comfort while lowering energy bills. Ideal for modernising homes without compromising on style.
Conservatories
Custom-built conservatories and solid roof sunrooms provide affordable living space extensions. With options for shape, colour, and finishes, we create versatile areas for relaxation or entertainment, tailored to your property's aesthetics.
Roofline Products
PVCu roofline solutions, including fascias, soffits, and guttering, protect homes from weather damage. These low-maintenance products resist rot and leaks, available in multiple styles and colours to complement your property's exterior.
Front Doors
We offer PVCu, composite, and French doors designed to boost kerb appeal and security. Our team advises on material benefits, ensuring a choice that balances aesthetics, insulation, and durability for your home.
Bifold Doors
Bifold doors create seamless transitions between indoor and outdoor spaces. Their concertina design maximises openings, allowing natural light to flood interiors while offering modern functionality for contemporary living.
People
Stephen Darby
Owner
Stephen Darby, founder of S & K Windows, oversees all quotations and installations. With over two decades of experience, he ensures every project meets exacting standards, combining technical expertise with a customer-focused approach.
Questions
What areas do you serve?
We operate across North Yorkshire, Durham, and Cleveland, including Northallerton and surrounding regions.
Do you offer free quotations?
Yes, all quotations are free and conducted by our owner, Stephen Darby.
Are financing options available?
Yes, we provide flexible financing to help customers spread the cost of installations.
What materials do you use?
We use energy-efficient PVCu profiles from REHAU, triple glazing, and durable roofline products.
Can I visit your showroom?
Yes, our Northallerton showroom offers in-person visits and virtual tours for convenience.
How long have you been in business?
We have served customers since 2002, building a reputation for reliability and quality.
Reviews (5)
Kerry Johnson
Jul 05, 2021 Report
I am so happy with the work carried out by S & K windows. Very professional friendly and great communication. Big shout out to gary whom completed the installation. I would highly recommend them.
Kevin F.
Jul 01, 2021 Report
These guys are well worth every cup of tea made Seriously, the work, the effort, and knowledge for these guys was absolutely amazing. Both Graham and shane who installed the windows and doors did a amazing job. There wasn't even a spec of dust left behind. The quality of both windows and doors is really outstanding
Lesa May
Mar 24, 2021 Report
Positive:Professionalism,Punctuality,Quality
Fantastic, service, second time using s and k because the quality and workmanship is excellent, on time, friendly and even clean up and and clean.the glass ! Highly recommended
Sarah Panton
Mar 04, 2021 Report
I contacted S&K Windows for a quote for 2 replacement windows. Steve responded promptly and was excellent at understanding our needs. He was helpful and informative but not at all pushy. The windows have now been installed and I'm delighted with them. I'm particularly impressed that the fitter was able to remove the old windows and fit the new without so much as a scratch on the surrounding paintwork. Other than the lovely new windows I wouldn't have known he'd been here! Every speck cleared away. Highly recommended.
Christina Kelly
Mar 02, 2021 Report
Positive:Professionalism,Punctuality,Quality,Responsiveness,Value
Would 100% recommend to anyone wanting windows and doors. Professional throughout the whole process from quote to fitting, great finish and very clean, even managed to get them all fitted through the snow!
Services:Window installation,Door installation