
Bespoke Lipped Casement Windows UK
Our stormproof timber windows, also known as lipped casement windows, are designed for homes where enhanced weather protection is essential without compromising the character of traditional British timber joinery. Combining robust modern construction with refined detailing, they are particularly well suited to properties exposed to driving rain, strong winds and changeable weather conditions, including coastal and more exposed locations across the UK and Ireland.
The defining feature of a stormproof timber window lies in the sash-to-frame construction. Unlike a traditional flush casement, the sash closes over the outer face of the frame, forming a rebated, overlapping joint. This design, together with a continuous weatherseal, provides improved resistance to wind-driven rain, air infiltration and everyday weather exposure while retaining the familiar outward-opening operation associated with classic British casement windows.
Available in side-hung and top-hung configurations, with optional dummy sashes or direct-glazed fixed lights, our stormproof timber windows can be tailored to create consistent external sightlines across single and multi-light arrangements. Internally, the frame profile and glazing bead are finished in a traditional ovolo moulding, giving the system the elegant appearance expected from premium timber windows for British homes.
As a result, stormproof timber windows and lipped casement windows are widely specified by homeowners, architects and developers who want the reassurance of improved weather performance together with the craftsmanship, visual quality and traditional styling of outward-opening timber windows.
Standard construction
This carefully developed construction helps ensure reliable insulation, long-term durability and excellent resistance to the demanding weather conditions often experienced across the UK.


Our stormproof timber windows are fitted with high-performance hardware selected to ensure smooth operation, secure closing and dependable weather protection in everyday use.
The primary operating component is the Easy Clean friction hinge system, calibrated to provide consistent torque, controlled movement and stable sash support throughout the opening cycle. It also allows internal access to the external pane, a feature widely valued in upper-storey British homes.
For secure closing pressure, the system incorporates a WINKHAUS espagnolette lock, delivering uniform multi-point compression along the rebated sash. Accurate espagnolette engagement is essential to maintaining gasket compression, airtightness and resistance to wind-driven rain, particularly in exposed and coastal environments.
Where controlled ventilation or additional safety compliance is required, restricted friction hinges can also be specified. For projects where traditional detailing is especially important, the windows can be fitted with classic casement stays or Monkey Tail stays. These details recreate the appearance of period British hardware while preserving the performance benefits of the modern friction-hinge and espagnolette system.
Every hardware component is selected to integrate seamlessly with our stormproof outward-opening timber windows, ensuring accurate sash alignment, reliable operation and long-term durability.
Our stormproof timber windows are fitted with 24 mm double-glazed units achieving a thermal performance of Ug = 1.1 W/m²K. All glazing is internally beaded for improved security and easier maintenance, and fitted with warm edge TGI spacers to reduce thermal bridging, lower the risk of condensation and enhance overall energy efficiency.
This glazing specification is designed to support the performance of outward-opening stormproof timber windows, combining thermal comfort with the robust weather resistance required in the UK market.
For projects with more specific performance requirements, we offer a wide range of specialist glazing options for our stormproof timber windows and lipped casement windows.
Available options include toughened safety glass, laminated security glass and acoustic glazing for improved noise reduction in more exposed or built-up locations. Homes affected by strong sunlight can also benefit from solar control glass, which helps reduce solar gain, minimise glare and protect interior finishes against UV fading.
A full range of obscure glass and decorative glazing options is also available, allowing the windows to be tailored to both traditional and contemporary architectural settings.
Each glazing configuration is selected to support comfort, security and long-term durability, while maintaining the refined appearance expected from premium timber windows.
Our stormproof timber windows are crafted from FSC-certified wood sourced from responsibly managed forests.
We work with carefully selected timber species chosen for their durability, dimensional stability and natural beauty. The most popular options include pine, larch, spruce, meranti and Accoya®, each offering its own visual and technical characteristics suited to premium exterior joinery.
Regardless of the timber used for the frame and sash, the sill section is always manufactured from hardwood to ensure greater resistance to wear, moisture and changing weather conditions. This construction detail helps enhance both the lifespan and structural performance of every window.
Through careful timber grading and moisture-controlled processing, we produce stormproof timber windows that offer long-term reliability, refined appearance and lasting quality.
Colour plays an important role in the appearance of any British home, which is why our stormproof timber windows are available in an extensive range of high-quality paint and stain finishes.
Clients can choose from the full RAL colour palette, as well as premium designer shades from Farrow & Ball and Little Greene, allowing the windows to complement both period properties and more contemporary homes.
For those who appreciate the natural beauty of real wood, we also offer transparent stain finishes and Natural Effect coatings. These durable finishes enrich the timber grain while preserving its authentic appearance and refined character.
Our timber stormproof windows can also be specified in dual-colour finishes, with one tone applied externally and another internally. This provides additional design flexibility and allows the joinery to sit comfortably within both the façade and the interior scheme of the property.
Every finish is engineered for durability, colour stability and long-term performance in the British climate, delivering the elegance and quality expected from premium timber joinery.
Our stormproof timber windows can be specified with a range of glazing bar configurations designed to replicate traditional British joinery and achieve a visually coherent appearance across the elevation.
We offer astragal bars in 24 mm and 20 mm widths, available in multiple profile shapes to reflect period detailing and accurately match historic originals. For projects requiring deeper sightlines or load-bearing divisions, we also manufacture structural glazing bars from 65 mm.
For conservation work and heritage properties requiring more traditional detailing, we also offer leaded glazing with hand-applied lead cames, capturing the character associated with authentic leaded lights.
All glazing bar systems are designed to maintain consistent sightlines across the full stormproof window range, ensuring a unified appearance while preserving the performance benefits of the system.
To complement our stormproof timber windows, we offer a wide selection of beautifully profiled architraves.
These decorative mouldings frame the window opening, conceal the joint between the frame and the wall, and provide a refined interior finish. Architraves not only enhance the architectural character of period-style interiors but also help protect wall edges from everyday wear.
Available in a variety of profiles and designs, they allow you to achieve a timeless look inspired by classic British joinery.
Our stormproof timber windows are also available in bespoke bay configurations, tailored to the architectural requirements of each property.
Every bay window is made to measure to ensure a precise fit and seamless integration with the building. We manufacture bay posts and timber cills and can supply them as fully pre-assembled units to support quick and accurate installation.
This approach helps streamline the fitting process while ensuring correct alignment, structural stability and long-term durability.
Our stormproof timber windows can be enhanced with a range of additional performance features and architectural details designed to support both functionality and appearance.
For controlled background ventilation, the system can accommodate TITON flush trickle vents integrated discreetly into the frame, helping to maintain clean sightlines while meeting UK ventilation requirements.
To improve water management and long-term durability, we also offer head drips and transom drips engineered to direct rainwater away from the frame and glazing rebates. The windows can additionally be supplied with internal and external window boards, as well as internal grooves for bespoke board installations.
For projects requiring more decorative detailing, we provide a full suite of timber mouldings designed to integrate seamlessly with the stormproof window system and reinforce the refined character of the finished joinery.
Because of their rebated sash design and enhanced weathersealing, stormproof timber windows are particularly well suited to exposed properties, coastal homes and locations affected by strong winds and driving rain.
The overlapping sash-to-frame construction offers greater resistance to the elements than a standard flush casement, making the system a strong choice where weather performance is a key consideration. At the same time, the traditional ovolo detailing, outward-opening configuration and carefully considered ironmongery ensure that the windows retain the familiar appearance of premium British timber joinery.
This balance of robust performance and traditional styling makes our stormproof timber windows and lipped casement windows an excellent solution for both period-inspired and contemporary homes across the UK and Ireland.
Looking for
Get in touch with EUROSTYL to discuss your project. We manufacture bespoke stormproof timber windows and lipped casement windows for period, coastal and contemporary homes across the UK and Ireland, combining enhanced weather protection with traditional detailing and premium craftsmanship.
We begin with a conversation and analysis of your needs. Our advisors suggest the best solutions, avoiding unnecessary costs and providing support at every stage.
We prepare a detailed quotation and consult the project with the technology department to ensure optimal specifications and full alignment with your expectations.
We keep you informed about the production process and delivery timeline. Thanks to continuous communication, you can be confident that your order is in good hands.
Have a question? Need a quote or carpentry advice? Contact us. We will be happy to answer your questions and tailor our offer to your needs.