The newest brand of PVCu frames on the market, Liniar was created by bringing together some of the window industry’s most experienced and forward thinking designers with over 500 years of industry experience between them.

With a focus on research, development and design, Liniar continues to push the boundaries when it comes to product innovation

We specialise in a wide range of UPVC windows suitable for every type of new or replacement project. We have attractive, easy-to-fit, low-maintenance windows to suit you. Read more about our Upvc Windows.

We manufacture a wide range of UPVC doors suitable for all projects. A range of attractive, easy-to-fit, low maintenance doors to suit you. Roundbrand are the number one manufacturer of Liniar products and our doors are available with high security locking options, such as ABS anti bump anti snap cylinders.

Replace your old Conservatory roof with a new Roundbrand Conservatory roof. A new roof can breathe life into existing conservatories. Heat control and glass roofs are now available all made to measure and to fit with your existing frames. With a wide range of colours to choose from such as Woodgrain, Cream and even Chartwell Green, a Roundbrand roof can match any existing frames. All our roofs are made on site and our dedicated conservatory team can help with any queries or problems.