High Performance Retrofit

July 5, 2025

Completed in 1967 to a remarkably high standard for the time, by 2018 this striking home needed a major overhaul. After a three-year refurb journey, the house now meets EnerPHit standards of energy efficiency and boasts an almost entirely off-grid energy system, all while preserving the style and legacy of the iconic original home.

Norrsken P31A triple-glazed windows and lift-and-slide-doors were used extensively throughout the property to maximise natural light and views of the stunning surrounding area. Frame finishes blend with the neutral, earthy colour palette used throughout the property and complement the eye-catching copper cladding in particular.

Awards:

Winner of RIBA East Midlands 2022 - Regional Award
Winner of RIBA East Midlands 2022 - Sustainability Award
Winner of RIBA East Midlands 2022 - Project Architect of the Year Award
Longlisted for RIBA / Grand Designs House of the Year 2022
Shortlisted for the Stephen Lawrence Prize 2022

Case Studies & Press

Excellence in design, construction & glazing: Architect interview case study
Ravine House featured on Grand Designs House of the Year 2022

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"All contact with the team has been great, answering questions and concerns promptly, survey was thoroughly carried out... and delivery & Installation went smoothly... We are so pleased we went with Norrsken, we love our windows/doors and cannot recommend them highly enough!"

Adrian

Homeowner

"I did my research before contacting Norrsken but they had come highly recommended by our Architect for our Passive House self build.

From the first meeting with Nick we felt confident that they were the Company for us."

Ali and Brian Manning

Homeowners

"Fantastic professional service, from the original design to the final installation. The triple-glazed windows and doors that have been fitted to our new house are of a very high quality and look amazing. We definitely made the right choice when we decided to use Norrsken, nothing is too much trouble for them."

Nigel

Homeowner

"Excellent Company from start to finish… If only every window supplier operated like this! I have used many others over the years on various projects but Norrsken far exceeded all of them… I hope this helps you make a decision for what is probably a large chunk of your budget… They are totally worth it"

Angela Smith

Homeowner

“From our very first interaction to the aftercare support, Norrsken has been exceptional. The quality of their windows is outstanding - beautifully designed, expertly crafted, and a real standout feature in our home. They've truly elevated the overall look and feel of the house.”

Neil Southwell

Self Builder Homeowner

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Modern interior with a large triple-glazed window showing a garden view

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Find the perfect windows for your project using our advanced selector tool to filter by performance, materials, and opening styles.

Compare U-values, select timber or alu-clad frames, filter by passive house suitability, and explore opening types from fixed to tilt & turn. Our intelligent selector helps you discover windows that match your exact specifications.

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Filter by thermal performance, frame materials, glazing options, and design preferences to find doors that perfectly balance aesthetics with energy efficiency. Compare specifications and explore our complete range.

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High Performance Retrofit

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