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Business Details
Expert Windows Doors Conservatories in Merthyr Tydfil
Established over three decades ago, Mercury Windows has built a reputation as a trusted FENSA-certified provider of premium home improvement solutions in South Wales. Our family-run business prioritises quality craftsmanship and reliable service, specialising in PVC windows, composite doors, conservatories, and double-glazing installations. With extensive local knowledge spanning Merthyr Tydfil and surrounding areas within a 50-mile radius, we combine technical expertise with customer-centric values. Our team's 30 years of collective experience ensures tailored solutions that enhance property aesthetics and functionality. We actively engage with client feedback to maintain high service standards, offering comprehensive repairs and replacements for existing installations.

As an industry-recognised company, we deliver durable, energy-efficient products that meet modern building regulations while maintaining traditional attention to detail. Our commitment to transparency extends to clear pricing structures and honest advice throughout the design and installation process. Whether upgrading a single window or undertaking a full conservatory project, we provide end-to-end support from initial consultation to final fitting. This dedication to excellence has earned us consistent customer recommendations and long-term industry credibility.
Services
PVC Windows Composite Doors Conservatories Double Glazing Repairs
Highlights and features
  • We are FENSA-certified installers with industry-recognised standards
  • Our team has 30+ years' combined experience in window and door installations
  • Family-run business offering personalised customer service
  • We operate within a 50-mile radius covering South Wales comprehensively
  • Customer feedback directly informs our continuous service improvements
Associations and certifications
  • FENSA
What people say
Very pleased with the sash windows Highly recommend Excellent door fittings Professional service Quality installations
Update Listing
Services
PVC Windows
We supply and install energy-efficient PVC windows including bay, sash, and Georgian bar designs. Our products enhance thermal performance while maintaining traditional aesthetics. All installations meet current building regulations through our FENSA certification.
Composite Doors
Our composite doors combine modern security features with classic styling options. Available in various colours and finishes, these doors provide enhanced insulation and durability while complementing property exteriors.
Conservatories
We design and build custom conservatories and orangeries that create additional living space. Our structures feature energy-efficient glazing and warm roof options to ensure year-round usability across South Wales properties.
Double Glazing
Our double-glazing solutions improve home insulation and reduce noise pollution. We replace outdated units with modern sealed systems that enhance energy efficiency while maintaining window functionality.
Repairs
We offer comprehensive repair services for existing window and door systems. Our specialists fix broken seals, replace damaged components, and restore conservatory functionality to extend product lifespan without full replacement.
Questions
What services do you offer?
We specialise in PVC windows, composite doors, conservatories, double-glazing installations, and repair services across South Wales.
Are you FENSA-certified?
Yes, we are official FENSA-certified installers, ensuring all our work meets building regulations without requiring additional council approval.
Which areas do you cover?
We operate from Merthyr Tydfil across South Wales, including Aberdare, Pontypridd, and Cardiff within a 50-mile service radius.
Can you provide a free quote?
Yes, we offer free, no-obligation quotes for all our window, door, and conservatory installation projects.
Do you handle repairs?
We provide comprehensive repair services for existing PVC windows, doors, and conservatories to restore functionality and appearance.
Reviews (2)
Shelley Farrar
Nov 30, 2017 Report
Good communication from beginning to end, great job with quality windows and door, no mess left for us to clean up either, will definitely be using you for the rest of the house.
Liz Allan
Oct 28, 2016 Report
Really pleased with our new window and door, no fuss fitting, clean and tidy. Beautifully finished and good price. I wish Mercury were builders, plumbers, carpenters, electricians and mechanics too, my life would be complete!