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Business Details
38 Years
experience
Your Trusted Home Improvement Experts in Preston
Lancashire Double Glazing has been a trusted name in home improvement for over 35 years, established in 1988 with a commitment to quality, integrity, and customer service. Our state-of-the-art 60,000 sq ft factory in Preston manufactures over 2 million frames annually, ensuring precision and durability in every product. We specialize in crafting bespoke windows, doors, conservatories, and extensions using British-made materials, backed by expert installation teams with decades of combined experience. Our focus on innovation has led to the development of energy-efficient solutions, including triple-glazed windows and warm roof systems, designed to enhance comfort and reduce energy bills. With a workforce of fully trained professionals and a network serving over 225,000 customers, we maintain rigorous quality control standards aligned with BSI regulations. Customer satisfaction remains our priority, evidenced by our 4.4-star rating from 460 reviews and a 70% repeat business rate driven by referrals.

We offer comprehensive guarantees on all installations, ensuring long-term peace of mind for homeowners. Our financial partnerships provide flexible payment options, including interest-free credit, making home improvements accessible without compromising quality. Through continuous investment in technology and staff development, we uphold our reputation as one of the Northwest's largest and most respected home improvement providers.
Services
Windows Doors Conservatories Extensions Roof Systems Garden Rooms Porches Orangeries UPVC Products Commercial Glazing
Details
  • Year established: 1988
Highlights and features
  • We have over 35 years of experience in home improvement solutions
  • Our products are manufactured in-house to strict British standards
  • Expert installation teams with comprehensive training and certifications
  • Flexible financing options including interest-free credit available
  • 4.4-star rating from 460+ verified customer reviews
Associations and certifications
  • Financial Conduct Authority
What people say
Superb service Fantastic workmanship Polite and efficient Highly recommended Excellent communication
Services
Windows
Our A+ energy-rated windows combine security and thermal efficiency with aesthetic appeal. Available in uPVC, aluminium, and timber finishes, they feature multi-point locking systems and draft-free designs. Each window is custom-manufactured to meet exact specifications, ensuring perfect fit and performance for both modern and traditional properties.
Conservatories
Tailor-made conservatories transform living spaces with year-round usability. Our designs incorporate high-performance glazing and warm roof systems that maintain comfortable temperatures. Available in Victorian, Edwardian, and lean-to styles, each structure is built to complement your property's architecture while maximizing natural light.
Extensions
Bespoke home extensions create additional living space tailored to your lifestyle needs. Using the innovative HUP! system, we deliver rapid installations with minimal disruption. Our designs integrate seamlessly with existing structures while incorporating modern insulation and energy-efficient materials for optimal comfort.
Doors
Security-focused doors combine robust construction with contemporary design elements. Available in composite, uPVC, and aluminium materials, our doors feature advanced locking mechanisms and thermal breaks. Custom options include decorative glass panels and matching sidelights to enhance both security and curb appeal.
Roof Systems
Revolutionary warm roof conversions transform conservatories into functional living spaces. Our insulated roof panels maintain comfortable temperatures year-round while offering design flexibility with slate-effect or glass finishes. The system includes integrated guttering and ventilation for long-term durability and low maintenance.
People
Owen Gilmartin
Sales Representative
With over 15 years in home improvements, Owen provides expert guidance through product selection and installation processes. His consultative approach ensures customers receive tailored solutions matching their property and lifestyle needs.
Harry
Installer
Experienced fitter specializing in window and door installations. Known for meticulous attention to detail and thorough cleanup, Harry consistently receives praise for professional workmanship and customer care during home visits.
Mark
Senior Installer
Skilled technician with expertise in front door and window replacements. Recognized for efficient installations and perfect finish work, Mark ensures every project meets the company's high standards for quality and customer satisfaction.
Questions
Do you offer guarantees on installations?
Yes, all our installations come with comprehensive guarantees. Over 600,000 guarantees have been issued, covering manufacturing defects and installation quality for complete customer peace of mind.
Can I see products before ordering?
Our Preston showroom displays full product ranges with knowledgeable staff available for guidance. Customers can physically inspect window and door options before making purchasing decisions.
Are finance options available?
We offer various financing solutions including interest-free credit and buy-now-pay-later schemes through our FCA-regulated credit broker services, making home improvements more accessible.
How long do installations take?
Standard window installations typically complete within 4 weeks from order. Larger projects like extensions vary but our average turnaround remains competitive within the industry standards.
Are FENSA certificates provided?
Yes, all window and door installations qualify for FENSA certification. We handle registrations directly to ensure compliance with building regulations and simplify the process for customers.
Do you handle planning permissions?
Our team provides guidance on planning requirements. While we don't submit applications directly, we offer expert advice to help customers navigate local authority approval processes for extensions and major works.