Window Frames Sales & Service in UK

Over the last 50 years, Cliffside Windows has worked hard to establish its reputation as a trusted local double glazing business. We're Lincolnshire's longest trading manufacturers and installers of double glazed uPVC products. Through our unique, specialist experience we have identified the products our customers want - high performance, low maintenance, long-lasting and affordable uPVC windows, doors and conservatories. Please get in touch Today for more information.

About Us Blackthorn Timber Windows specialises in the supply and installation of timber windows, doors and conservatories for all types of property covering an area from the Scottish Borders down to the Derbyshire Peak District and north Lincolnshire, taking in Cumbria along the way. We offer what we believe is the broadest range of window and door designs and styles anywhere in the UK, from traditional sliding sash windows to folding sliding doors, cottage-style windows to modern reversible casements, Georgian or Edwardian bar details or wide expanses of glass, retaining and re-glazing original stained glass or creating something new. In short, if it can be made, we can supply and install it. So, whether your home is urban or rural, Victorian or 21st Century, contemporary or barn conversion, we have the windows and doors to suit it. Our byword is Quality and we don't just say it, we mean it. Quality in the made-to-measure windows, doors and conservatories that we install, in the work of our skilled joiners on site and in the after-sales support that we offer. We can supply our joinery in hardwoods such as Sapele, Idigbo, Oak and Grandis or in Accoya, which is a softwood that has been chemically altered to give it the durability and stability of the best hardwoods. However but the majority of our customers choose FSC certified engineered Redwood (pine), which comes from well-managed forests in northern Sweden and the Baltics. And with a choice of any paint colour or even dual colour with the inside different to the outside, we can make your windows and doors as bespoke as you like.