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Business Details
Premium Windows & Doors in Blackburn
At McDermott Windows, we are a family-run business with over two decades of experience in supplying and installing high-quality windows and doors across the North West. Led by Stephen McDermott and Emma, our team combines extensive industry expertise with a commitment to honesty, reliability, and craftsmanship. We specialise in energy-efficient solutions, including PVCu, timber-alternative, and composite designs, ensuring tailored options for every home.

Our FENSA registration and 10-year insurance-backed guarantee reflect our dedication to compliance and customer satisfaction. We pride ourselves on a seamless service, from initial consultation to expert installation, treating every project as if it were our own. With a reputation built on word-of-mouth recommendations, we prioritise clear communication, competitive pricing, and meticulous attention to detail, ensuring lasting value for our clients.
Services
Windows Doors Timber Windows Timber Doors Fascias Soffits Composite Doors Aluminium Windows Integral Blinds Roofline Systems
Highlights and features
  • Family-run business with over 20 years of industry expertise
  • 10-year insurance-backed guarantee on all installations
  • FENSA registered for compliance and peace of mind
  • Expert installation with no subcontractors
  • Wide range of energy-efficient, secure window and door options
Associations and certifications
  • FENSA
What people say
Excellent customer service Highly recommend Professional and polite Superb finish Cracking job
Services
Windows
We supply and install a wide range of energy-efficient windows, including PVCu, timber-alternative, and sash designs. Our products enhance home security, insulation, and aesthetics while complying with FENSA standards. Each installation is backed by a 10-year insurance-backed guarantee, ensuring long-term durability and customer satisfaction.
Doors
Our bespoke composite and aluminium doors combine modern security features with timeless design. Fitted by in-house experts, they offer superior insulation, multi-point locking systems, and customisable finishes. All installations include a 10-year guarantee and FENSA compliance for complete peace of mind.
Timber Windows
Crafted from sustainably sourced Accoya, Sapele, and Oak, our timber windows blend traditional joinery with modern performance. Expertly installed by our team, they provide exceptional durability, thermal efficiency, and aesthetic appeal, supported by a 10-year insurance-backed guarantee.
Fascias & Soffits
We replace damaged fascias and soffits with low-maintenance PVC-U systems, enhancing roofline durability and appearance. Our installations include eaves protection and stainless steel fixings, with a 10-year guarantee against rot, warping, and weather damage.
Roofline Systems
Our dry verge and ridge systems offer a mortar-free alternative for tiled or slated roofs, improving ventilation and wind resistance. Installed with durable materials and stainless steel fixings, they come with a 10-year guarantee against weather-related damage.
People
Stephen McDermott
Owner/Director
Stephen leads McDermott Windows with over 20 years of industry experience. He ensures every project meets exacting standards, offering expert advice and hands-on oversight from consultation to installation.
Emma McDermott
Owner/Director
Emma co-leads the business, focusing on customer service and operational excellence. Her expertise ensures clients receive tailored solutions and seamless project coordination throughout the installation process.
Jordan
Installer
Jordan is a trusted installer with a reputation for meticulous attention to detail. He contributes to the team's high standards, ensuring every window and door is fitted to perfection with professionalism and care.
Questions
What areas do McDermott Windows serve?
We operate across the North West, including Blackburn, offering local expertise with nationwide quality standards for window, door, and roofline installations.
Are McDermott Windows FENSA registered?
Yes, we are FENSA registered, ensuring all double-glazed window installations meet building regulations with certified compliance and guarantees.
What guarantees do you offer?
All installations come with a 10-year insurance-backed guarantee, covering workmanship, materials, and performance for windows, doors, and roofline systems.
Do you use subcontractors for installations?
No, all work is completed by our directly employed team, many of whom are family or long-term colleagues with extensive hands-on experience.
Can I customise my windows and doors?
Yes, we offer made-to-order solutions with a choice of colours, glazing, hardware, and finishes to suit traditional or modern properties across Lancashire.