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Business Details
38 Years
experience
Your Trusted Partner for UPVC Windows & Doors in Prescot
Established in 1988, Rainhill UPVC has built a reputation as a trusted family-run business specialising in high-quality home improvements across Merseyside, Lancashire, and Cheshire. With over three decades of experience, we focus on delivering bespoke solutions for replacement windows, doors, conservatories, and roofline products, prioritising superior materials and craftsmanship. Our commitment to excellence is evidenced by our FENSA registration, Fair Trades accreditation, and industry-leading insurance-backed guarantees. We partner with leading manufacturers to ensure our products meet rigorous standards for security, energy efficiency, and aesthetic appeal, including A-Rated Planitherm glass and Rockdoor composite systems.

Our customer-centric approach, supported by 90% of work coming from recommendations, reflects our dedication to transparency, reliability, and tailored service. From initial consultation to installation, we prioritise clear communication, minimal disruption, and long-term satisfaction, ensuring every project aligns with individual property needs and heritage requirements. As a three-generation business, we combine technical expertise with a personal touch, offering competitive pricing without compromising on quality or after-sales support.
Services
UPVC Windows Composite Doors Conservatory Conversions Roofline Replacement Porches Commercial Glazing
Details
  • Year established: 1988
Highlights and features
  • 35+ years of specialist experience in home improvement installations
  • FENSA-registered installations ensuring compliance and property value retention
  • Exclusive use of A-Rated Planitherm glass for superior energy efficiency
  • Approved Rockdoor installers offering market-leading security solutions
  • 90% of work comes from customer recommendations, reflecting consistent quality
Associations and certifications
  • FENSA
  • Fair Trades
  • Home Pro
What people say
Excellent workmanship Very professional Highly recommend No mess left Competitive pricing
Services
UPVC Windows
Our high-performance UPVC windows enhance thermal efficiency and security while reducing noise pollution. Featuring 70mm profiles with multi-chambered construction and A-Rated glazing, they prevent warping, fading, or discolouration. Each installation includes a 10-year guarantee against defects, with options for casement, bay, and heritage-style designs to suit period and modern properties.
Composite Doors
We install Rockdoor and Distinction composite doors with reinforced frames and multi-point locking systems. These doors combine uPVC durability with timber aesthetics, available in multiple colours and finishes. Enhanced security features include anti-snap cylinders and reinforced hinges, complemented by a 10-year structural guarantee and energy-efficient insulation.
Conservatory Conversions
Transform existing conservatories with solid tiled or glass roof systems for year-round usability. Our Supalite and Icotherm solutions improve thermal performance while maintaining structural integrity. Services include building regulation compliance, climate control integration, and decorative finishing touches like ridge cresting and leaded glass options.
Roofline Replacement
Durable PVC fascias, soffits, and guttering systems replace rotting timber components with maintenance-free alternatives. Our dry-verge and bargeboard installations prevent water ingress while improving kerb appeal. Products come with discolouration guarantees and are fitted by CSCS-certified installers using health-and-safety-compliant methods.
Porches
Custom-designed UPVC porches with glass or tiled roofs create weatherproof entranceways. Available in white, rosewood, and anthracite finishes, they feature decorative glazing options and traditional brickwork or rendered finishes. Full-service installation includes foundations, framing, and compliance with local planning requirements.
Questions
Do you offer free quotes for home improvement projects?
Yes, we provide free no-obligation quotes for all our services. Contact us via phone or our website to arrange a consultation.
Are your installations FENSA registered?
All our window and door installations are FENSA registered, ensuring compliance with building regulations and maintaining property value.
What areas do you cover?
We serve Prescot, St Helens, Liverpool, Warrington, Southport, Ormskirk, and surrounding areas in Merseyside, Lancashire, and Cheshire.
Do you provide guarantees on your work?
We offer a 10-year guarantee on UPVC products and installations, plus an insurance-backed warranty through Home Pro.
Can you help with heritage property requirements?
Yes, we specialise in period-appropriate designs with options for traditional window styles, colours, and glazing to meet conservation area standards.
Are your installers qualified?
Our team holds CSCS cards and DBS checks, with decades of combined experience in residential and commercial installations.
Reviews (6)
John Waite
Dec 07, 2021 Report
We had an old patio door removed and a new one installed. The product is of high quality as is the workmanship, (Steve worked slowly and methodically displaying a high level of expertise). I would recommend Rainhill UPVC Windows.
Clare Nelson
Dec 04, 2021 Report
Just had a new door fitted by Rainhill windows and the service and communication was second to none,Tracy was very helpful from the beginning to end , Steve the fitter was impeccable leaving the place spotless before he left.We went for the Endurance door and so glad we did,an excellent quality strong solid door ,the hall is now the warmest place in the house.Highly recommended
Louise Asson
Dec 02, 2021 Report
Weve used this company quite a few times for doors and windows in our house and are always pleased with the results. Their customer service is very good and they always keep me informed throughout the process with any new information and dates. Will use them again.
Marie Edna
Dec 01, 2021 Report
From ordering to fitting, the team were very professional and deserve more than 5 star rating. They kept to appointment times, covered my carpets to protect them . They were very well mannered and respectful of my property both inside and out. Not one bit of rubbish was left from the old window. The new window is extremely high quality UPVC and carries a lengthy guarantee. I would highly recommend this firm.
Brian Egerton
Nov 20, 2021 Report
Third time I have used this company, third time I have nothing but praise for the service from start to finish, Door was excellent, transaction of the deal and Fitting of of our door was top class many thanks.
DAvid Leadbetter
Nov 05, 2021 Report
Excellent and professional service from Rainhill UPVC, would highly recommend this company. High quality products installed by highly skilled staff, clean and tidy workers. Really happy with our new windows, thanks to Liam, Ste and Mark