Triple-Glazing upgrades now available across EVERY product range!

Storm Casement Windows

High-performance weather-tight windows

Based in South Manchester, we are no stranger to the rain and understand the importance of protecting your home against the unpredictable nature of weather. Storm casement windows can offer all the beauty and timelessness of traditional casement windows but with the peace of mind that you’ll have additional thermal performance.

Triple-Glazing upgrades now available across EVERY product range!

Don’t let the rain stop you from having the whole rainbow.

We use only the very best profiles and manufacturing techniques available on the market today.

Our windows are quality tested to ensure that they stand the test of time, one blustery day after another. 

When it comes to the engineering of stormproof windows, weatherproof performance is at the core. Offering protection from the outdoors, our casement windows can endure the stress than windy weather places on homes every day. 

Choose stormproof casements in a smooth or grained effect depending on your property style, and with a large range of coloured foil finishes, your windows can be as striking as they are storm-busting.

Need a colour match? Stormproof casements can be finished in any RAL colour – just speak to our team to find out more.

See our other types of casement windows

Flush Casement Windows

Slimline Aluminium Windows

Timber Casement Windows

See our other products

Sliding Sash Windows


Glazing Options

Design and Installation Services


We are passionate about what we do. We will take the time to go through the ideal design specification to best suit your property and budget. We're not interested in sitting in your house for hours on end offering silly 'deals'.


All of our installers are directly employed by us and are paid a fixed salary. Unlike most other companies who use sub-contractors, our teams are given the time to ensure that your project is completed to the most exacting standards

Peace of Mind

All IBGs are NOT the same. As members of The Consumer Protection Association, our insurance backed guarantee covers 100% of the contract value. Many of our competitors offer IBGs covering as little as 25%. We are a Certass registered company.

Storm Casement Windows FAQ's

What Manchester Window Factory doesn’t know about windows isn’t worth knowing, so if your question isn’t answered below, our family-run business is here to help.

Often referred to as stormproof windows or lipped casement windows, the sash within a storm casement sits proud on the frame, giving an embossed look as opposed to a flush one. This lip is simple yet effective in adding additional protection from the elements, giving them their stormproof name. 

Traditional flush windows are one of the most popular styles of window in the UK. Utilising casements which sit seamlessly within the window frame, the resulting minimalist and elegant design has proved to be a timeless favourite. 


Stormproof windows, however, are not far behind when it comes to their popularity. With regards to functionality, they can offer everything that a flush casement window can, with customisable colours and energy-saving glazing to fit your home and budget. 


Visually, stormproof windows have a lipped casement meaning that the windows are raised from their frame. If you’re not sure which window will best fit your style, get in touch with our friendly team of experts. 

Believe it or not, it’s the weather which helps to make these windows weatherproof. With outward opening windows, when there is pressure from the likes of wind, this pushes against the window surface. Because of the lipped casement in storm windows, this pressure only aids in pushing the sash more firmly against the seals it sits within, making less space for draughts to squeeze into.

Interested in storm casement windows?

We design and install with lasting peace of mind. We’ll give you an honest quote without sitting in your house for hours on end. We don’t start off with one price, then dramatically halve it after a bogus call to a fictitious boss. We don’t believe in working that way. We never have and we never will.