Maximum Ventilation
Outward-opening design with 100% ventilation capability, perfect for capturing breezes and improving air circulation while providing unobstructed views when fully open
Our Casement windows represent the perfect blend of functionality and modern performance, offering unmatched ventilation and security for your home.
Introduction
Our Casement windows offer the perfect combination of functionality and style, providing unmatched ventilation and security for your home.
Each window is expertly engineered to open fully outward, maximizing airflow while creating a tight seal when closed for superior energy efficiency and weather protection.
100% opening for optimal airflow and natural cooling
Available in multiple materials and configurations with various opening options
Multi-point locking systems and tight compression seal
Maximum airflow
Excellent thermal efficiency
Wide opening capacity
Comprehensive warranty
Average customer review
Limited time offer for new customers. Transform your home with our premium Casement windows.
*Terms and conditions apply. Offer valid until end of month.
Why Choose Our Casement Windows
Our Casement windows provide superior ventilation and security with advanced locking systems, offering the perfect blend of functionality and energy efficiency.
Outward-opening design with 100% ventilation capability, perfect for capturing breezes and improving air circulation while providing unobstructed views when fully open
Tight seal when closed creates exceptional insulation with U-values as low as 1.2 W/m²K, minimizing drafts and reducing energy bills throughout the year
Multi-point locking systems around the entire perimeter create one of the most secure window designs available, with options for additional security features
Available in multiple materials (uPVC, aluminum, timber), colors, and hardware options to match any architectural style from traditional to ultra-modern homes
Our Casement windows feature exceptional thermal performance with compression seals and weathertight hinges. The full perimeter compression against the frame creates an air-tight barrier, providing outstanding energy efficiency while also offering excellent sound insulation.
Crafted for Excellence
Our Casement windows combine contemporary design with exceptional functionality to provide superior ventilation and clean sightlines.
Choose from premium materials including uPVC, aluminum, timber, and composite. Each offers distinct advantages in durability, maintenance requirements, and thermal performance to suit your specific needs.
Side-hinged design with premium hardware allowing windows to open fully outward for maximum ventilation. Easy-to-use handles and mechanisms ensure smooth, effortless operation even after years of use.
Available in single-sash, multi-sash, and combination configurations. Can be paired with fixed panels or installed as part of bay or bow window arrangements to maximize light and views.
With sleek modern design
Traditional craftsmanship with modern precision
Our window specialists assess your property, discuss material options (uPVC, Aluminum, Composite), and take precise measurements to ensure accurate fit.
We create detailed specifications for your casement windows, including material selection, finish options, and glazing configurations for optimal thermal performance.
Your windows are precision-engineered using advanced manufacturing techniques for superior strength, stability, and long-term performance.
Our certified technicians ensure precise fitting with secure fixing, proper leveling, and thorough sealing to maximize energy efficiency and lifespan.
We provide comprehensive care guidelines including recommended treatment schedules, cleaning procedures, and checks for drafts and water ingress.
We take precise measurements of your existing windows and discuss your preferences for style, colour, and functionality. Our experts will assess your property's specific requirements and explain the best options available.
No cost, no pressure
See our work in action
Your peace of mind is our priority
Our premium casement windows come with a 10-year guarantee, ensuring exceptional long-term durability and performance.
Our casement windows are designed with weatherseals that prevent air leakage and maintain a tight seal, ensuring energy efficiency and comfort throughout the year.
Complete peace of mind with insurance-backed guarantees covering all workmanship, materials, and weather-sealing for our casement windows.
Ongoing support including maintenance advice and care services to ensure your casement windows last a lifetime.
We stand behind the quality of our products and workmanship. If you're not completely satisfied, we'll make it right. It's that simple.
Hear from our satisfied clients
The casement windows are exceptional. The superior ventilation and unobstructed views they bring to our property are exactly what we wanted, and their energy efficiency has noticeably reduced our heating bills. Unlike other window types, these open fully for maximum airflow.
James R
Hampstead
What impressed me most about Harrington's casement windows is the perfect balance of functionality and design. They've transformed our home while providing the security and energy efficiency we needed.
Sarah M
Surrey
From the detailed consultation about material options to the final installation, Harrington Windows were excellent. The quality of craftsmanship and attention to period details in our conservation area property exceeded our expectations.
David & Emma P
Kent
See how our Casement Windows stack up against alternatives
Natural beauty with distinctive grain and character
Limited wood-effect finishes
Modern, sleek appearance
Excellent natural insulation with air pockets (U-values from 1.1 W/m²K)
Good insulation with multi-chambers
Poor without thermal breaks
Renewable resource with negative GWP, 100% recyclable
High carbon footprint, difficult to recycle
Energy-intensive production, 100% recyclable
50-100+ years with maintenance, repairable
25-35 years typically, not repairable
30-40 years typically
Microporous finishes need recoating every 7-10 years
Minimal maintenance, can discolor over time
Virtually no maintenance needed
Warm to touch, less condensation
Cool to touch
Cold to touch, prone to condensation
Ideal for heritage buildings and conservation areas
Often rejected in conservation areas
Rarely suitable for period properties
Significant value enhancement, attractive to buyers
Standard value improvement
Good for contemporary homes
Feature | Our Casement Windows | uPVC Windows | Aluminum Windows |
---|---|---|---|
Aesthetic Appeal | Natural beauty with distinctive grain and character | Limited wood-effect finishes | Modern, sleek appearance |
Thermal Performance | Excellent natural insulation with air pockets (U-values from 1.1 W/m²K) | Good insulation with multi-chambers | Poor without thermal breaks |
Environmental Impact | Renewable resource with negative GWP, 100% recyclable | High carbon footprint, difficult to recycle | Energy-intensive production, 100% recyclable |
Lifespan | 50-100+ years with maintenance, repairable | 25-35 years typically, not repairable | 30-40 years typically |
Maintenance Requirements | Microporous finishes need recoating every 7-10 years | Minimal maintenance, can discolor over time | Virtually no maintenance needed |
Touch & Feel | Warm to touch, less condensation | Cool to touch | Cold to touch, prone to condensation |
Suitability for Conservation | Ideal for heritage buildings and conservation areas | Often rejected in conservation areas | Rarely suitable for period properties |
Value Added to Property | Significant value enhancement, attractive to buyers | Standard value improvement | Good for contemporary homes |
Our window experts can help you compare options and choose the perfect solution for your home.
Everything you need to know about our Casement windows
Our window experts are here to help you with any specific questions or requirements.
Get started with a free consultation and quote. Our experts are ready to help you find the perfect Casement Windows for your home.
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