Stone Mullion

Windows set into stone mullions are a common feature throughout the Cotswolds, however they can be difficult to maintain and are not very energy efficient. Fortunately Clearway specialise in the manufacture and replacement of stone mullion windows using aluminium profiles designed specifically for this situation. Our Crown 52 “odd leg” system copes with the profile of the stone to give a neat, attractive and energy efficient window. We have extensive experience of replacing stone mullion windows in period, modern and new build properties. We can also install into traditional hardwood frames.

Lead designs and glazing (astragal) bars can be faithfully reproduced if required and our modern polyester powder coating methods allow you to choose from any RAL colour for your frames. The new windows will be “A rated” for energy efficiency as well as giving improved security. Egress hinges (subject to window sizes) and two stage locking are also included. We also offer monkey tail and tear drop handles for that authentic touch.

If you property is listed or with a high level conservation area we recommend that you contact your local authority planning department prior to going ahead with replacing your windows. Should permission be refused we can offer our secondary glazing system as an alternative to replacing your existing windows. Please click for more details.

Please visit our showroom to see our stone mullion replacement windows on display in a “real life” setting.

Available Styles

Casement Windows

Upgrade and modernize your house windows with uPVC or Aluminium casement windows.

Tilt and Turn Windows

Our tilt and turn windows are easy to clean and maintain and offer great functionality.

Sash Windows

Do you have a more traditional property? Our vertical sliding sash windows are for you.

Energy Efficiency

With energy prices constantly on the rise, taking steps to improve the energy efficiency of your home will lower how much you spend on heating it.

Upgrading single glazed windows, or replacing your existing double glazing, with energy rated uPVC and aluminium windows can help improve the energy efficiency of your home and save you money on your energy bills.

For more information on making your home more energy efficient call us on 01242 513 322 or enquire here


The most important thing to us is our customers which is why it's important you're 100% happy with your new double glazing.

Our uPVC and aluminium windows and doors are designed to continue looking and performing well year after year. To give you peace of mind we give guarantees across all our products so in the rare instance something should go wrong you're covered.

For more information about our products call us on 01242 513 322 or contact us here

Expert Advice

Choosing new windows and doors for your home can be a confusing experience - with plenty of options to consider and questions to ask - but it doesn't have to be.

With us you're talked through every option available and offered unbiased advice on the best ones for you. Any questions you have we'll be happy to answer. Our sales team don't work on commission so will never pressure you into buying.

Since our launch back in 1983 we have been focussed on providing a friendly and expert service. We will go out of our way to ensure we deliver a product tailored to your exact requirements, on time and install it with precision.