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Business Details
UPVC Windows & Doors in Wiltshire & Bristol
Established over 23 years ago, MG Replacement Windows has built a reputation as a trusted family-run business specialising in UPVC windows, composite doors, and secondary glazing across Wiltshire and Bristol. Our team combines extensive industry knowledge with meticulous attention to detail, ensuring every installation meets the highest standards of quality and durability. We prioritise customer satisfaction through transparent communication, offering free no-obligation quotes and insurance-backed guarantees.

Our services include A-C rated UPVC windows, bi-fold doors, conservatories, and energy-efficient solutions designed to reduce heat loss and noise pollution. Certified by Certass, we maintain a commitment to professionalism, using dustsheets to protect properties during installations. Positive word-of-mouth and customer referrals underscore our dedication to delivering reliable, value-driven services tailored to both modern and heritage properties.
Services
UPVC Windows Composite Doors Secondary Glazing Bi-Fold Doors Conservatories Timber Windows Aluminium Windows Fascias & Guttering Light Carpentry Double Glazing
Highlights and features
  • We have over 23 years of experience in window and door installations.
  • Our team are Certass Registered Installers for quality assurance.
  • We offer free, no-obligation quotes with transparent pricing.
  • Our services include energy-efficient solutions to reduce heat loss.
  • Positive customer referrals highlight our reliable and professional approach.
Associations and certifications
  • Certass
What people say
Excellent job Highly recommend Superb service Fair price Thoroughly recommended
Services
UPVC Windows
We supply and install A-C rated UPVC windows designed to enhance energy efficiency and reduce noise pollution. Our installations ensure minimal disruption, using dustsheets to protect your home. With over 23 years of expertise, we deliver durable solutions tailored to both modern and listed properties.
Composite Doors
Our composite door installations combine security, durability, and aesthetic appeal. Fitted with precision by Certass-registered professionals, these doors offer excellent insulation and are available in a range of styles to complement your property's design.
Secondary Glazing
Ideal for older or listed buildings, our secondary glazing adds an extra pane of glass to existing windows. This reduces heat loss and external noise while preserving the original structure, providing a cost-effective energy-saving solution.
Bi-Fold Doors
We offer supply and installation of bi-fold doors that create seamless transitions between indoor and outdoor spaces. Our team provides expert advice on configurations, ensuring maximum light intake and ease of access for modern living.
Conservatories
Our conservatory installations extend living spaces with custom designs suited to your property. Built using high-quality materials, they feature energy-efficient glazing and are completed with minimal disruption to your home environment.
Questions
What areas do you serve?
We operate across Wiltshire, Bristol, and surrounding areas, providing window and door installations to both residential and listed properties.
Do you offer free quotes?
Yes, we provide free, no-obligation quotes for all our services, including UPVC windows, composite doors, and conservatories.
Are your installers certified?
Our team are Certass Registered Installers, ensuring all work meets industry standards and is covered by a 10-year insurance-backed guarantee.
Can you help with listed buildings?
Yes, our secondary glazing service is ideal for listed properties, preserving original windows while improving energy efficiency and noise reduction.
What guarantees do you provide?
All installations come with a 10-year insurance-backed guarantee, reflecting our confidence in the quality and durability of our work.