Define Doors

Our Define aluminium windows beautifully capture the timeless charm of classic ‘putty-line’ timber windows, a beloved feature of British homes for over 200 years. The term ‘putty-line’ comes from the old method of securing glass with pins and putty, which not only served a practical purpose but also created an iconic look. Today, this elegant style continues to enhance a variety of homes, from quaint countryside cottages to stylish suburban townhouses – even modern properties. With their refined bevelled sash, these windows offer the character of traditional timber but with the benefits of durable, low-maintenance aluminium. They’re the perfect blend of heritage and innovation, bringing classic beauty and modern convenience together effortlessly.