About
Christchurch Retrofit Double Glazing & Glass Specialists
Winstone Glass has built a strong reputation throughout Christchurch for quality workmanship, honest advice and reliable service. Led by Richard Donovan, the company is backed by a team of experienced glaziers who take genuine pride in their craft. From retrofit double glazing and other residential projects to large scale commercial jobs our team is committed to delivering high-quality results and a professional experience for every customer.
Winstone Glass is a locally owned Christchurch glazing company specialising in retrofit double glazing, reglazing, frameless showers, balustrades and residential glass solutions. Our mission is to help Canterbury homeowners enjoy warmer, drier and quieter homes without the expense of replacing existing joinery.
Specialists in Retrofit Double Glazing
At Winstone Glass, retrofit double glazing is at the heart of what we do. We love helping homeowners throughout Christchurch and Canterbury improve the comfort, energy efficiency and value of their homes by upgrading existing single-glazed windows to double glazing. All this without the cost and disruption of replacing the entire window frame.
Our experienced team works with a wide range of window types and property styles. From modern homes with aluminium joinery through to character villas and heritage properties with original timber windows.
Aluminium Window Retrofit Double Glazing
Many homes built in Christchurch over the past several decades have aluminium windows that were originally installed with single glazing. We can upgrade the windows to double glazing by modifying the existing frames and replacing the glass. This means homeowners enjoy the benefits of double glazing without the expense of complete window replacement.
Retrofit double glazing reduces heat loss, minimises condensation, improves comfort and creates a quieter living environment. All while retaining the appearance of the existing windows.
Timber Window Retrofit Double Glazing
Timber windows are a defining feature of many Christchurch homes and are often one of their most attractive architectural elements. We specialise in retrofitting double glazing into existing timber windows. This allows homeowners to preserve the character and craftsmanship of their original joinery while significantly improving thermal performance.
Retaining and upgrading existing timber windows is the cost-effective and environmentally responsible option.Especially where the frames are in good condition.
Character and Heritage Homes
Character homes, villas, bungalows and heritage properties often require a careful and sympathetic approach to glazing upgrades. Our team has extensive experience working with older homes and understands the importance of preserving their unique architectural features.
We take pride in helping homeowners improve warmth, comfort and energy efficiency while maintaining the character they love!
Leadlight Restoration and Double Glazing
Leadlight windows are a treasured feature of many older homes. Where possible, we can restore and preserve existing leadlight panels and incorporate them into modern double-glazed units. This allows homeowners to protect these beautiful decorative windows while gaining the benefits of improved insulation and reduced condensation.
Our team works carefully with each project to ensure the character and integrity of the original leadlight design is maintained.
Low-E Glass Options
For homeowners seeking even greater thermal performance, we offer Low-E (low emissivity) glass options. Low-E glass features a virtually invisible coating that helps reduce heat transfer through the glass, keeping homes warmer in winter and helping to reduce energy costs.
Low-E glass is one of the most effective ways to improve the thermal performance of double glazing and is particularly popular with homeowners undertaking renovations or looking to maximise energy efficiency.
Argon Gas-Filled Double Glazing
To further enhance insulation performance, double-glazed units can be filled with argon gas between the panes of glass. Argon is a safe, colourless gas that improves the insulating properties of the unit by reducing heat transfer.
When combined with Low-E glass, argon gas-filled units provide some of the highest-performing residential glazing solutions available, helping create a warmer, more comfortable home year-round.
Trusted Retrofit Double Glazing Specialists in Christchurch
Whether you’re upgrading aluminium windows, preserving original timber joinery, restoring leadlights or improving the performance of a character home, Winstone Glass has the experience and expertise to help. We provide tailored solutions designed to suit your home, your budget and your goals, delivering warmer, quieter and more comfortable living spaces for homeowners throughout Christchurch and Canterbury.
Why Homeowners choose Winstone Glass
Choosing a company to work on your home is an important decision. At Winstone Glass, we understand that homeowners are looking for more than just a competitive price. Homeowners want experienced professionals they can trust to deliver quality workmanship, reliable advice and excellent service from start to finish.
Christchurch-Based Team
As a Christchurch-based company, we understand the unique challenges Canterbury homeowners face, from cold winter mornings and condensation issues to improving the comfort and energy efficiency of older homes. Our local knowledge allows us to recommend glazing solutions that are suited to Christchurch’s climate and housing styles.
We proudly work with homeowners throughout Christchurch, Selwyn, Waimakariri, Hornby and the wider Canterbury region including Rolleston, Prebbleton, Lincoln, Leeston, Banks Peninsula, Kaiapoi, Rangiora, Woodend, Amberley and Hanmer Springs.
Thousands of Panes Installed
With many years of experience in the glazing industry, our team has successfully installed thousands of panes of glass across a wide variety of residential projects. From single window upgrades through to whole-house retrofit double glazing projects, we deliver high-quality results.
Our experience means we’ve encountered virtually every type of window and glazing challenge, allowing us to provide practical solutions tailored to each home. We problem solve our way to the best solution.
Free Measure and Quote
We believe homeowners should have access to professional advice without obligation. That’s why we offer a free measure and quote service, allowing you to understand your options and receive tailored recommendations before making a decision.
We’ll take the time to discuss your goals, explain the available glazing options and answer any questions you may have.
Experienced Installation Team
The quality of any glazing project depends heavily on the installation. Our experienced installers take pride in their workmanship and attention to detail, ensuring every project is completed to a high standard.
We understand that we are working in your home and aim to make the installation process as smooth and hassle-free as possible, with respect for your property at every stage.
Locally Owned and Operated
As a locally owned and operated business, we value the relationships we build with our customers and the reputation we have earned within the community. Much of our work comes from referrals and repeat customers, reflecting the trust homeowners place in our team.
When you choose Winstone Glass, you’re working directly with local people who are invested in delivering excellent results and standing behind our work.
Licensed, Qualified and Trained Staff
Our team is committed to maintaining high industry standards through ongoing training and professional development. We stay up to date with current glazing technologies, safety requirements and industry best practices to ensure our customers receive expert advice and quality workmanship.
From safety glazing requirements through to the latest energy-efficient glass options. We have the knowledge to guide you through the process with confidence.
Quality Products and Trusted Suppliers
We work with leading glass manufacturers and trusted suppliers to ensure every project is completed using quality materials designed to perform for years to come. Whether you’re choosing standard double glazing, Low-E glass or argon gas-filled units, you can be confident you’re receiving products that meet recognised industry standards.
Warranty and Peace of Mind
We stand behind the quality of our workmanship and the products we install. Our glazing systems and installations are backed by warranty coverage, providing homeowners with confidence and peace of mind long after the project has been completed.
Our goal is not simply to complete a job, but to deliver a lasting improvement to your home that you can enjoy for many years to come.
A Reputation Built on Trust
At Winstone Glass, we know that trust is earned. That’s why we focus on clear communication, honest advice, quality workmanship and exceptional customer service. From your first enquiry through to the final installation, our team is committed to providing a positive experience and a result you’ll be proud of.
Whether you’re considering retrofit double glazing, replacing broken glass, restoring leadlights or undertaking a major renovation, you can rely on Winstone Glass for professional advice, quality workmanship and a commitment to doing the job right.
Warm homes. Clear views. Quality workmanship. Trusted by Christchurch homeowners.