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Diamond Windows are a registered FENSA installers

We adhere to a strict code of quality. We notify FENSA whenever an installation has been completed.

Storm Proof Timber Casement Windows

As the name suggests, Timber Storm windows are equipped to handle even the most adverse of weather conditions. The Diamond Windows Droitwich Storm Windows promise a quality performance, with top hung and side hung choices available. Similarly, creating a classic design couldn’t be simpler, thanks to the added option of glazing bars.

Our Timber Storm Windows are hung on friction hinges, and the option of creating a traditional furniture look is always there. This is because we can offer solutions with interior embellished mouldings on the sash and frame alike, which results in an enhanced appearance.

Our timber casement window styles are a popular choice for homeowners because of their classic, chic appearance and ‘A’ energy rating, ensuring your home retains heat, saves you money, and looks good doing it.


Sizes and Dimensions (mm)

Frame Head: 68x68
Frame Depth: 68
Frame Cill: 68x68
Frame Jamb: 56x68
Frame Transom: 68x68
Frame Mullion: 68x68
Sash Head: 70x59
Stiles: 70x59
Bottom Rail: 70x59

Thermal Performance

The whole window is able to reach 1.4W/m²k.

Window Operations

Outward opening
Fixed pane
Fixed sash
Top hung
Right-hand side hung
Left-hand side hung

Cills (mm)

Basic: 25, 47, 62, 87
Bespoke: 114, 140

Performance and Security

Each of our windows is intricately tested and accredited to ensure that it adheres to the criteria of BS6375 parts one and two. Additionally, we guarantee that our timber windows meet the requirements of the TRADA High-Performance Timber Window Scheme.

On top of this, our Timber Storm collection is equipped with a dual weatherstrip, which promises optimal thermal and weather performance. Meanwhile, our solutions are also A-rated on the BRE Green guide and CE marked – EN 14351-1.

We understand that windows are among the most important features when it comes to protecting your home, which is why we intricately test each of our windows. We ensure that every one of our solutions is accredited to PAS 24, meaning the necessary security requirements are met.

Materials, Colours, and Finish

It goes without saying that our Timber Storm solutions are crafted from quality timber; however, there is a differentiation between the standard and hardwood options. As standard, windows will come in engineered redwood, whilst the choice of Grandis is also available for those wanting a hardwood solution. Regardless of which timber you opt for, each is FSC certified.

By default, the Timber Storm collection is offered in “Traffic White”; however, there are various colour and stain options to choose from. These include Chartwell Green, Brilliant Blue, Reseda Green, Traffic Red, Cream, Mahogany Brown, Jet Black, Agate Grey, and Anthracite Grey. Standard stain finishes include Teak, Cyprus Light Oak, and Mahogany.

Each of our products is factory finished, meaning that they undergo organic preservative treatment. This is to ensure full protection after the solutions have been machined.

Soft White 9016 (Standard RAL finish)

Anthracite Grey 7016 (Standard RAL finish)

Agatte Grey 7038 (Standard RAL finish)

Beige Grey 7006 (Standard RAL finish)

Traffic Grey 7043 (Standard RAL finish)

Cream 9001 (Standard RAL finish)

Red 3005 (Standard RAL finish)

Green 6028 (Standard RAL finish)

Blue 5011 (Standard RAL finish)

Chartwell Green NCS3010-G 20 Y (Standard RAL finish)

Mahogany (Standard Stain Finish)

Cyprus Light Oak (Standard Stain Finish)

Teak (Standard Stain Finish)

Walnut (Standard Stain Finish)

Ebony (Standard Stain Finish)

10 Year Guarantee

All of our double-glazed casement windows are easy to maintain and keep looking like new, partly due to their durability and longevity. We’re so confident in our windows that we offer a ten-year guarantee as standard.

Shop the Timber Storm Range at Diamond Windows

In order to discover more about the Timber Storm collection, please don’t hesitate to get in touch. An expert member of our team will be on hand to assist you and answer any queries you may have. We look forward to hearing from you.

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“Excellent selection, first class advice and outstanding fitting. We wouldn't go anywhere else for double gazing projects.”

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Contact us
Diamond Windows, Unit 22, Northstreet I.E, Droitwich,West Midlands, WR9 8JB
Company Reg: 5367399
Open Hours
Mon to Fri: 9am to 4.30pm
Sat: 9am-1pm
Sun: By appointment