Performance-first window solutions, backed by real building experience.
Lifetime Windows was founded on a simple idea: high-performance windows should improve comfort, reduce energy use, and deliver long-term value.
With over 15 years working with Passive House technology, our experience spans construction, design support, energy modeling, costing, and building envelope strategy.
This combination of hands-on building knowledge and building science allows us to understand how windows perform in the real world — not just on paper.
Our Approach
Windows are often one of the largest investments in a building, whether in new construction or upgrading an existing property.
We help teams evaluate options early, reduce risk, improve performance, and maximize long-term value.
Experience That Makes the Difference
- Passive House and high-efficiency projects
- Retrofit and energy upgrade work
- PHPP energy modeling
- Envelope and durability detailing
- Emissions and carbon analysis
- Hands-on construction experience
More Than a Supplier
We don’t just deliver products and walk away.
We support installers with clear guidance, practical detailing advice, and post-installation assistance to ensure window systems perform reliably over time.
Let’s Build Smarter
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