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Premium Windows & Doors for Modern Homes
EcoHaus Internorm stands as the UK's leading specialist in high-performance, design-led glazing solutions. With over a decade of expertise as Internorm's top UK partner, we deliver bespoke window and door packages tailored to new builds, renovations, and large-scale extensions. Our commitment to technical excellence, energy efficiency, and architectural aesthetics is reflected in every project, supported by partnerships with premium brands like Velfac, Rationel, and our exclusive Visiline range. We combine Scandinavian design principles with cutting-edge technology to meet Passive House standards, ensuring long-term value for homeowners and architects alike.

Our nationwide network of showrooms and experienced installation teams provides personalized service, from initial consultation to precision fitting and aftercare. Backed by industry accreditations and a reputation for resolving client needs swiftly, we prioritize transparency, sustainability, and client satisfaction in every interaction.
Services
Aluminium Windows Timber-Aluminium Windows uPVC-Aluminium Windows Sliding Doors Entrance Doors Bifold Doors Passive House Glazing Showroom Consultations Project Management Aftercare Services
Highlights and features
  • We are Internorm's longest-serving UK partner with 12 years of specialist glazing expertise
  • Our Passive House-certified solutions achieve U-values below 0.8 W/mK
  • Exclusive Visiline range combines ultra-slim aluminium profiles with triple glazing
  • Nationwide showroom network with expert Product Specialists in 4 locations
  • Precision installation teams certified to European Partner standards
Associations and certifications
  • Internorm
  • Passivhaus
  • RIBA CPD
What people say
Silence when closed Flawless installation process Energy efficiency improvements Exceptional aftercare Architectural elegance
Services
Aluminium Windows
Our Visiline aluminium windows feature ultra-slim profiles that maximize natural light while maintaining exceptional thermal efficiency. With U-values as low as 0.78 W/mK, these windows combine contemporary aesthetics with triple-glazed security. The powder-coated finish ensures durability against UK weather conditions while offering 200+ colour options for customization.
Timber-Aluminium Windows
Internorm timber-aluminium windows provide dual-material performance with natural wood interiors and weather-resistant aluminium exteriors. These windows achieve 0.64 W/mK U-values through argon-filled triple glazing. The composite construction resists warping while maintaining traditional aesthetics suitable for heritage properties and modern builds alike.
Sliding Doors
Visiline sliding doors offer 22mm sightlines with seamless transitions between indoor and outdoor spaces. Available in configurations up to 9m wide, these doors incorporate multi-point locking systems and thermally broken frames. The low-threshold design complies with accessibility regulations while maintaining an airtightness rating of 0.05 m/(mh).
Passive House Glazing
Our Passive House-certified windows feature triple-glazed units with warm-edge spacers and argon gas filling. These systems achieve 0.59 W/mK U-values while maintaining acoustic insulation up to 46 dB. The thermally optimized frames eliminate cold bridging, making them suitable for both new eco-homes and retrofit projects targeting EnerPHit certification.
Bifold Doors
Aluminium-timber bifold doors open fully to create 50cm-wide folded packages with 20mm panel joints. Available in configurations up to 6m wide, these doors incorporate automatic weather seals and anti-finger trap mechanisms. The structural hardware supports panels weighing up to 400kg while maintaining an airtightness rating of 0.15 m/(mh).
Questions
What types of windows do you supply?
We offer aluminium, timber-aluminium, and uPVC-aluminium windows from Internorm, Velfac, Rationel, and our exclusive Visiline range. All systems are available with triple glazing and custom configurations.
Do you provide nationwide installation?
Yes, our certified installation teams operate across the UK. We maintain regional hubs in Gloucestershire, Surrey, Swindon, and Swansea to ensure consistent service quality.
Can you meet Passive House standards?
Our glazing systems achieve U-values below 0.8 W/m²K, meeting Passive House requirements. We provide thermal calculations and certification documentation for all projects.
What warranty do you offer?
We provide a 10-year manufacturer's warranty on all window and door systems, plus a 2-year installation guarantee. Extended service packages are available through our aftercare team.
How do you handle after-sales support?
Our dedicated aftercare team resolves issues within 48 hours. We offer annual maintenance checks and replacement part sourcing for all installed systems.
Are your products security rated?
All windows and doors meet PAS 24 security standards with multi-point locking systems. We offer optional Secured by Design certification for residential projects.