Passivhaus: Thinking Beyond the House

High‑Performance Façades for Low‑Energy Buildings

Passivhaus is becoming a defining benchmark for energy‑efficient architecture in the UK and Ireland. As the industry moves towards net‑zero carbon, designers are turning to the standard for its proven ability to reduce energy demand, improve comfort and deliver buildings that perform exactly as modelled. For many projects, the facade is the key to achieving this. High‑performance windows and curtain walling play a central role in insulation, airtightness and daylighting — the core principles of Passive house design. Modern aluminium systems, engineered with advanced thermal technologies and low‑carbon materials, now make these requirements more achievable than ever.

TECHNAL supports architects and specifiers with a portfolio of Passive House Institute (PHI) certified solutions:

TENTAL 50 and TENTAL 60 curtain wall systems

• phA efficiency class certification, with overall facade U-values of 0.79 W/m2K

• combines high thermal insulation with airtightness and advanced drainage design, supporting large spans and complex geometries

SOLEAL NEXT 75 windows

• pHc efficiency class certification, delivering Uw-values as low as 0.71 W/m2K

• with open-in configurations, tilt-turn, and fixed lights to suit diverse design requirements, slim profiles enhance aesthetics and daylight while ensuring robust acoustic and weather performance

These systems allow designers to create high‑performing, comfortable buildings without compromising architectural expression.

Supporting Better Learning Environments

Schools, colleges and universities increasingly aim for Passivhaus and EnerPHit standards to deliver stable temperatures, improved indoor air quality and reduced running costs. With refined sightlines and excellent insulation, TECHNAL’s façade systems help create bright, energy‑efficient spaces that enhance wellbeing and support long‑term operational performance.

Low‑Carbon Aluminium for Whole‑Life Sustainability

All TECHNAL systems in the UK are manufactured using Hydro CIRCAL® 75R — aluminium made with a minimum of 75% recycled post‑consumer scrap. This significantly reduces embodied carbon and supports circular design, complementing the operational efficiency of Passivhaus buildings.

Technical Expertise and Project Support

TECHNAL works collaboratively with architects, façade engineers and fabricators to support:

• Project‑specific façade strategy and specification guidance

• Thermal and acoustic modelling support

• Optimised detailing for airtightness and thermal bridging

• Delivery through a network of experienced TECHNAL fabricators

Designing for Passivhaus? We can help.

Explore our aluminium façade systems or contact us.