Outstanding efficiency and luxury aesthetics are synonymous with our Triple Glazed Casement windows. Designed to keep your home cosy and comfortable, everything about these timber windows exudes quality.

Thanks to their triple glazed make-up, our Stormsure Energy+ windows are A+ energy rated. This means that they deliver truly outstanding performance to keep the warmth within your home. In addition, the pinless timber composite beading used in their design leaves a seamless finish.

Every one of these triple glazed windows is manufactured with an elegant, softwood timber frame and premium Pilkington glass. Depending on your preferences, you can then select from an array of beautiful bar designs and finish in any colour of your choice.

Looking for a free quote? Fill in your window requirements on our window tool today.


Standard Heights (mm)

445 595
745 895
1045 1195
1345 1495

Standard Widths (mm)

483 625
910 1195
1337 1765

U Value

This product range is available with the following U Values, depending on your selected options and glazing.

0.8, 0.9, 1.0,

Glazing Type

Windows - Bars

Bar Design

This range is available with the following traditional bar design options.



Stain Options

All our windows are available in a selection of stain finishes.

Paint Options

All JELD-WEN products are available primed (for site finishing) or Hi-Build white, in a choice of standard colours (shown below), or to match any RAL colour of your choice. We also offer dual colour finishing on all casement windows - giving you endless possibilities to choose from.

Hardware Options

Our windows come with polished chrome hardware as standard but you can choose from any of the following as shown below.

Glazing Pattern

All JELD-WEN windows are available with 22 different glazing options. The following are some of our most popular choices. *Not available for simulated divided lite windows.


We offer the following leading guarantees for this window range.

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