Double Glazing Windows and Doors in Cornwall
Cornwall’s trusted specialists for double glazing windows, doors, and conservatories – quality products, expert installation, and service you can rely on.
Get Your Free Quotation
Whether you need new double glazing windows, replacement doors, or something else entirely, we’re here to help. Fill in the form below and a member of our team will be in touch to arrange your free, no-obligation quote.
Qualified Installers
Our surveyors and fitters are FENSA certified, so you can have complete confidence in the quality and compliance of every installation we carry out.
10 Year Guarantee*
We provide insurance-backed guarantees on our work, giving you long-term peace of mind well after installation day.
Highly Recommended
With over 100 genuine customer reviews and a 4.9-star rating on Google, our reputation speaks for itself.
Proud to be Window and Door Specialists You Can Trust
Transform your home with Prolux, the window and door specialists known for quality, reliability, and care. From double glazing windows to bespoke aluminium windows and replacement conservatory roofs, our team delivers premium results with a personal touch. We understand that your home is the most important place in the world to you, which is why every door and window installation is carried out with exceptional attention to detail.
Whether you’re upgrading with uPVC double glazing windows, installing timeless timber frames, or seeking out stylish bi-folds, you can trust our knowledgeable team. We work with leading manufacturers including Profile 22, Bereco, and Smart Architectural Aluminium, ensuring long-lasting performance, aesthetic excellence, and energy efficiency across every product we supply.
With years of experience serving homeowners and businesses across Cornwall, we go well beyond what you’d expect from standard window companies. We aim for 100% customer satisfaction, with swift and friendly communication and quality workmanship guaranteed on every project.
Our Customer Favourites
From timeless sliding sashes to sleek contemporary bi-folds, we offer a wide range of double glazing windows and doors to suit every style of property. Explore some of our most popular products below.
Our sliding sash windows combine traditional charm with modern performance, offering excellent thermal efficiency and a classic aesthetic that suits period and contemporary properties alike.
Bi-fold doors are a stunning way to connect your interior and exterior spaces. Available in a range of finishes and configurations, they bring light, style, and flexibility to any home.
The Residence 9 window system replicates the appearance of traditional 19th-century flush sash windows, offering a beautifully authentic look with all the benefits of modern double glazing.
Our uPVC double glazing windows are a popular choice for homeowners looking for low maintenance, high performance, and great value. Manufactured by Profile 22, they deliver lasting quality in a wide variety of styles.
Make a lasting first impression with a designer entrance door. Crafted from premium aluminium, these bold, architecturally striking doors are designed to complement modern and contemporary homes.
From Consultation to Completion: A Seamless Service
From design and supply to professional installation, we do it all. We provide an all-in-one service tailored to your property, with our window and door specialists on hand to support you at every stage. From expert guidance on product selection that balances style, performance, and budget, through to high-quality installation by trained professionals, you’re in safe hands from start to finish. We also provide dedicated aftercare and industry-backed guarantees for complete peace of mind long after the job is done.
Visit our window and door showroom in Penryn, where you can view our full range of products in person and speak directly with our helpful team. Whether you’re renovating a period property, upgrading to modern double glazing windows, or replacing a conservatory roof, we’re here to help you make the right choice for your home and budget.
We’re also trusted by commercial clients and construction leaders across Cornwall, valued for our project reliability, on-time delivery, and consistent quality across large-scale installations. Whatever the size or scope of your project, we bring the same level of care and professionalism to every job.
Why Homeowners Choose Prolux Over Other Window Companies
Our difference lies in our values. We take a no-pressure approach, offering honest expert advice and premium quality without the hard sell. Our knowledgeable staff provide tailored guidance to help you make the right choice for your home, and every member of our installation team is fully trained, experienced, friendly, and professional throughout.
We take pride in offering best-in-class products – including double glazing windows, uPVC double glazed windows, and aluminium windows – that meet British Standards and deliver long-lasting performance at competitive prices. With deep product knowledge and a genuine passion for home improvement, we go beyond what most window companies offer. As trusted installers and specialists, we put customer care, craftsmanship, and product integrity at the heart of everything we do.
Serving Homeowners Across Cornwall
We’re proud to serve homeowners, landlords, and businesses throughout Cornwall and the surrounding area. Whether you’re in Truro, Falmouth, Helston, Redruth, Camborne, or further afield, our team is on hand to provide expert advice, competitive quotes, and high-quality installations you can rely on.
From a single replacement double glazing window to a full property refurbishment, no job is too big or too small. We understand the unique character of Cornish homes, and we’ll always recommend products that complement your property while standing up to the local climate. Get in touch today to find out how we can help.
