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Expert Double Glazing Solutions in Wiltshire
Established over five decades ago, L F Replacement Windows has become a trusted name in Wiltshire for premium double glazing solutions. Our expertise spans the design, manufacture, and installation of energy-efficient windows, doors, and conservatories, serving homeowners across Wiltshire, Bristol, Bath, and surrounding areas. We pride ourselves on combining cutting-edge materials like Deceuninck PVCu and Smart Aluminium with meticulous craftsmanship to enhance home comfort and security. As a FENSA-registered company and Which? Trusted Trader, we uphold rigorous industry standards while offering a 10-year guarantee on all products. Our teams dedication to exceptional customer service ensures seamless installations and tailored solutions that meet individual needs.

With a legacy of satisfied clients and a commitment to innovation, we remain focused on delivering durable, thermally efficient products that reduce energy bills. Our comprehensive approach covers everything from initial consultation to final installation, supported by partnerships with leading suppliers. By prioritising transparency and quality, we aim to exceed expectations in every project, whether replacing windows or constructing bespoke conservatories. This enduring ethos has solidified our reputation as a reliable choice for homeowners seeking long-term value and performance.
Services
Double Glazing PVCu Windows Aluminium Windows Bi-Fold Doors Conservatories Roofline Secondary Glazing Tilt and Turn Windows Composite Doors Fascia Boards
Highlights and features
  • We offer over 50 years of experience in double glazing solutions.
  • Our products come with a 10-year guarantee as standard.
  • We are FENSA-registered for industry compliance and quality assurance.
  • Our team provides tailored solutions for enhanced home energy efficiency.
  • We use premium Deceuninck PVCu and Smart Aluminium materials.
Associations and certifications
  • FENSA
  • Which? Trusted Traders
What people say
Outstanding customer service Energy-efficient solutions Professional installations Durable products Competitive pricing
Services
Double Glazing
Our double glazing solutions combine two panes of glass with an insulating gas layer to improve thermal efficiency and reduce noise. Ideal for homeowners seeking lower energy bills and enhanced comfort, these windows are crafted from durable Deceuninck PVCu or Smart Aluminium. Backed by a 10-year guarantee, they offer long-term reliability and security for properties across Wiltshire and surrounding areas.
Conservatories
We design and install bespoke conservatories that extend living spaces while maintaining energy efficiency. Options include Victorian, Lean-to, and Orangery styles, tailored to complement your homes architecture. Constructed with high-performance materials, our conservatories provide year-round usability and are supported by expert craftsmanship and a comprehensive 10-year product guarantee.
Bi-Fold Doors
Bi-fold doors create seamless transitions between indoor and outdoor spaces, featuring sleek aluminium frames and expansive glass panels. These doors enhance natural light and offer superior thermal performance. Available in custom configurations, they are ideal for modernising homes in Wiltshire, Bath, and Bristol, with professional installation ensuring smooth operation and durability.
Roofline
Our roofline products, including fascias, soffits, and guttering, protect homes from water damage while improving aesthetics. Manufactured from low-maintenance uPVC, they resist weathering and discolouration. Designed for longevity, these components integrate seamlessly with existing structures, offering practical solutions for properties across the South West.
Composite Doors
Composite doors provide enhanced security and insulation, combining reinforced materials with advanced locking systems. Available in Solidor or Palladio styles, they offer customisable designs to suit traditional or modern homes. Backed by our 10-year guarantee, these doors deliver durability and thermal efficiency, ideal for homeowners in Wiltshire and beyond.
Questions
Do you offer free quotes for your services?
Yes, we provide free, no-obligation quotes for all our double glazing and conservatory projects.
Are your products energy-efficient?
Yes, our windows, doors, and conservatories are designed to meet high thermal efficiency standards.
What areas do you serve?
We operate across Wiltshire, Bristol, Bath, Swindon, and surrounding regions in the South West.
Is your work FENSA-certified?
Yes, we are a registered FENSA contractor, ensuring compliance with building regulations.
What guarantees do you provide?
All products come with a 10-year guarantee covering materials and workmanship.
Can you help with conservatory designs?
Yes, we offer bespoke conservatory designs tailored to your home’s style and requirements.
Reviews (3)
Liz Shawn Bialley
Dec 14, 2017 Report
We can not thank LF windows enough for their service. Our backdoor was fitted by them in 1994 the lock failed recently leaving the door securely.
Rosie Bassett
Apr 12, 2017 Report
We had our windows and doors fitted by LF, fantastic service, the fitters were all lovely and cleaned after themselves each day, they kept any.
Claire Louise Morgan
Feb 19, 2017 Report
What a fantastic service we have received from LF windows. Professional, efficient, friendly and most importantly reliable. Both Kevin and Vincent.