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Premium Window & Door Installations in Chesterfield
The Window Repair Guy is a family-run business established to provide high-quality window, door, and home extension solutions. With over 20 years of experience in the double glazing industry, our team prioritises honest advice and professional service, ensuring customers make informed decisions. We offer free, no-obligation quotes and estimates over the phone when measurements are provided, subject to a final survey.

Our reputation for fair pricing, reliability, and exceptional workmanship has led to repeat business and customer loyalty. All products come with a 10-year insurance-backed guarantee, offering peace of mind. Managed by Lee Miller, our approach combines traditional values with modern techniques to meet diverse home improvement needs.
Services
PVC Windows Composite Doors Conservatories Flat Roof Repairs Window Repairs
Highlights and features
  • 20 years of experience in the double glazing industry
  • Free no-obligation quotes and telephone estimates available
  • 10-year insurance-backed guarantee on all products
  • Family-run business with a focus on customer satisfaction
  • High-quality workmanship with energy-efficient and secure solutions
What people say
Highly recommended Excellent service Professional and reliable Great value for money Quick turnaround
Services
PVC Windows
Our PVC windows offer energy efficiency, noise reduction, and enhanced security. Available in casement, flush sash, and sliding sash designs, they are customisable with multiple colours and finishes. Professionally installed with a 10-year guarantee, these windows ensure durability and improved home insulation.
Composite Doors
Composite doors combine robust security with aesthetic appeal. Featuring multi-point locking systems and 32 design options, they are available in 31 colours and woodgrain effects. These doors provide thermal efficiency and long-term durability, backed by a 10-year insurance guarantee.
Conservatories
We design and install bespoke conservatories in Victorian, Edwardian, or custom styles. Constructed with reinforced PVC, they are low-maintenance and weather-resistant. Our team handles planning permissions and ensures energy-efficient builds that add property value and year-round usability.
Flat Roof Repairs
Specialising in EPDM rubber and GRP fiberglass flat roofs, we offer durable, leak-proof solutions. Our systems include 20-year product guarantees and 10-year workmanship insurance. These seamless, low-maintenance roofs improve insulation and withstand extreme weather conditions.
Window Repairs
We repair misted, damaged, or faulty windows with rapid turnaround times. Services include replacing seals, glass panes, and locks. Our repairs restore functionality and energy efficiency, supported by the same 10-year guarantee as full replacements.
People
Lee Miller
Manager
Lee Miller manages The Window Repair Guy and brings 20 years of double glazing expertise. Known for his honest advice and customer-focused approach, he oversees installations and repairs personally, ensuring high standards and client satisfaction.
Questions
What areas do you serve?
We primarily serve Chesterfield and surrounding areas, offering installations and repairs for windows, doors, and conservatories.
Do your products have guarantees?
All products come with a 10-year insurance-backed guarantee covering both materials and workmanship.
Can you provide emergency repairs?
While we prioritise prompt service, we do not offer 24/7 emergency repairs. Contact us during office hours for urgent issues.
Are your windows energy efficient?
Yes, our PVC and triple-glazed windows achieve high energy ratings, reducing heat loss and noise pollution for improved home comfort.
How long does installation take?
Most window and door installations are completed within a day, with conservatories typically taking 2-3 weeks depending on complexity.
Do you handle planning permissions?
Yes, we assist with planning permissions for conservatories and major home improvements, ensuring compliance with local regulations.