Product Development and Improvement

Environmentally Friendly
Environmentally Friendly
Award Winning Team
Award Winning Team
Made in Britain (1)
Made in Britain
A double-glazed glass unit is centred in the image. On the left, a cold, icy landscape with a snow-covered mountain symbolises low temperatures. A blue arrow points away from the glass unit, representing cold air being reflected out. On the right side, two cosy feet in patterned socks are propped up near a warm fireplace. An orange arrow points toward the inside, showing heat staying in. The image illustrates minimal heat loss, with the double-glazed unit effectively keeping cold air out and retaining warmth inside, visually representing the concept of U-values.
What is a U-Value? Energy Efficient Windows
Are you seeking the most energy efficient windows possible? Then your windows need low u-values. A whopping 85% of us globally report being impacted by climate change. And it’s...
A close-up view of a period-style building with traditional sash windows, featuring white window frames and decorative bars dividing the glass panes. The architectural detail showcases a clear example of astragal bars, ideal for visually distinguishing between authentic glazing bars and plant-on alternatives - relevant for understanding window style choices in heritage or conservation settings.
Astragal Bars vs. Plant-On Bars
Astragal Bars vs. Plant-On Bars: What’s Best for Heritage Windows? When you want to preserve the historical integrity of heritage properties, choosing the right window bars is crucial. Understanding...
"Energy Efficiency Made Easy: Gowercroft and Part L Compliance graphic featuring timber window frames in a workshop with a stylised 'Part L' concrete column design."
Energy Efficiency Made Easy: Gowercroft and Part L Compliance
Discover how Gowercroft's energy-efficient windows and doors can help architects and builders comply with Part L Building Regulations. Learn about their high-quality insulation materials, advanced glazing techniques, and commitment...
Illustration showing the life cycle stages of a window from raw materials to end-of-life, comparing 'cradle to gate' and 'cradle to grave' environmental impacts. Part of Gowercroft’s study into the sustainability of different window types, including uPVC, aluminium, and timber.
Sustainable Windows Study
At Gowercroft we are big on protecting the environment. We pride ourselves on manufacturing windows that are very efficient, come from sustainable sources and are manufactured in a way...
Home security window testing at Gowercroft Joinery
Home Security – Gowercroft pass window security tests
Gowercroft timber windows pass new PAS-24 2016 home security tests with flying colours Home Security something that we take very seriously at Gowercroft. That’s why, as part of our...
Award Winning Heritage Windows at the Listed Property Show
Gowercroft Joinery will be displaying its revolutionary new Winston and Richmond heritage windows on stand C7 at the Listed Property Show at Olympia on the 24th and 25th February....
BWF product innovation shortlist logo in green. It says prodcut inbbovation in lime green underneath.
Heritage Range Shortlisted for BWF Product Innovation Award 2017
Gowercroft Heritage Windows nominated for Prestigious Award Update August 2024: In keeping with our dedication to continuous improvement, we now use LandVac vacuum glazing in our heritage windows. This...
Gowercroft Joinery receiving the Best Windows award at the 2017 Build It Awards for their Richmond and Winston heritage windows, presented on stage with the official trophy.
Gowercroft Win Best Windows at Build It Awards
Gowercroft Wooden Windows are officially ‘The Best’! Our Heritage window range, designed specifically for the listed building and conservation market, has won multiple accolades. At a star-studded event held...
Build It Awards 2017 "Best Windows" category shortlisted logo, featuring gold and white text with a stylised house silhouette background.
Heritage Range Shortlisted for Build It Awards 2017
Gowercroft’s Heritage Windows Shortlisted for Major Award Updated August 2024: As part of our commitment to using the best available technology, our heritage windows now incorporate LandVac vacuum glazing....
Richmond heritage flush casement window with slim glazing bars in a bright, modern living room featuring a grey corner sofa and minimalist decor.
Richmond Heritage Flush Casement
Updated August 2024 to reflect improved vacuum glass selection The Richmond Heritage Flush Casement window is a revolutionary product, designed exclusively by Gowercroft Joinery. Already specified in several Grade...
Interior view of a Winston heritage sliding sash window by Gowercroft Joinery, featuring slim timber glazing bars and LandVac vacuum glass, set in a traditionally styled sash box with decorative paneling and white microporous finish. Lush green garden visible through the clear, reflection-free glass.
Winston Heritage Sliding Sash
An award-winning innovation for listed buildings and heritage homes The Winston Heritage Sliding Sash Window is an exclusive, groundbreaking design by Gowercroft Joinery. Already installed in several Grade II...
Diagram comparing Pilkington Spacia™ vacuum glazing and standard double glazing. The left side shows a 6.5mm thick vacuum-insulated unit with low-emissivity glass, clear float, and 0.2mm vacuum gap supported by microspacers. The right side shows a typical 24mm double-glazed unit using air or inert gas for insulation, requiring a larger gap.
What is Pilkington Spacia ™ glass?
Updated August 2024: In recent years, window technology has made major advances. At Gowercroft, we now use LandVac vacuum glass instead of Pilkington Spacia™ due to its many advantages....
Two painted timber test samples used for QUV testing sit on a wooden table, showing minimal surface erosion and sheen loss after accelerated weathering cycles designed to simulate 10–15 years of real-world exposure.
Q-UV Testing of Water Based Coating
Long-Term Protection for Wooden Windows and Doors Updated August 2024 We’re committed to providing some of the longest guarantees in the timber window and door industry. But how can...
Close-up of a white timber sash window and a matching white timber door with a glazed panel, both set in a red brick wall with stone and arched brick details, demonstrating minimal wear after years of use.
Maintenance to Timber Windows
Timber Windows can be Maintenance free! Updated August 2024Originally written by David Brown There’s a common misconception that timber windows are high maintenance, but that hasn’t been my experience...
Wood Stain Going Milky on Newly Installed Joinery Products
How weather and wood stain can affect the wood in windows It’s not uncommon during a wet winter for newly installed timber windows to develop a slightly milky or...
Cross-section diagram of a double glazing installation, showing features that extend glazing lifespan. Labels highlight components such as low modulus silicone capping, concealed pin, wood plastic composite bead, butyl seal with desiccant, high-security glazing tape, and horizontal drainage in the glazing rebate.
How Long Do Double Glazing Units Last?
Quality affects longevity when it comes to double glazing Updated August 2024 At our company, we use both traditional double glazing and LandVac vacuum glass, depending on the specific...
Certificate showing Gowercroft Joinery's Accoya Wood Certification
Accoya Windows and Doors
Accoya Hardwood for Superior Windows and Doors Accoya is without question the best timber for window and door manufacture on the market. It offers exceptional finish, durability, longevity and sustainability...
A woman peacefully sleeping next to her partner in a bright bedroom, illustrating the quiet and comfort achieved through effective noise-reducing glazing.
Noise Reduction Windows That Make Home Feel Like Home
Tired of the noise outside? Our windows are designed to block it out. Whether you’re living on a busy street, working with conservation restrictions, or designing for performance, Gowercroft’s...