Lian Vinduer products and EPD coverage
Lian builds windows and balcony doors for complex projects, with aluminum‑clad, low‑maintenance frames and custom options. The portfolio is broad for a specialist maker, yet their current EPD footprint looks thin. Here’s the short brief teams can use to decide what to prioritize next.
Who Lian is and what they sell
Lian Vinduer AS is a Norwegian project‑market supplier focused on windows and balcony doors, including inward‑opening system windows, fixed units, sliding options, acoustic variants, and fire‑rated models. Most products ship with exterior aluminum cladding and factory finishing, aimed at long service life and easy upkeep (Lian website, 2025).
Product range at a glance
They play in several product categories rather than a single pure play. Given sizes, glazing choices, hardware, and fire or acoustic options, the total configuration count likely sits in the hundreds. That breadth helps win bespoke institutional work like schools and hospitals where exact specs matter.
EPD status today
As of January 2026, we don’t see active product‑specific EPDs publicly available for Lian’s core windows and balcony doors. Past declarations appear to be retired. If you sell into projects that score materials on current EPDs, that creates friction because specifiers must default to conservative assumptions.
Why this gap matters commercially
On public and private projects that target carbon goals or programs like LEED v5, a current product‑specific EPD often avoids penalties in material accounting. The product with a valid EPD is simpler to select, so without one you’re more likely to be swapped late in design or value engineering. One mid‑sized win can easily offset the cost of an EPD, yet teams often don’t see the projects they never got to bid on.
Likely best‑sellers missing EPDs
Two workhorses on Lian’s site, the Systemvindu and the outwards‑opening Vindusdør, are central to many briefs. If these models lack a current EPD, specifiers will look for equivalents that do. Competitors have live declarations across very similar window and door types, which keeps them at the table.
Competitors with live EPDs
Examples in the same decision set include H‑vinduet Fjerdingstad’s outward‑opening window families with EPDs valid to 2030 (EPD Norway, 2025). Lyssand‑Frekhaug lists multiple wood‑aluminum windows valid to 2030 (EPD Norway, 2025). Nordvestvinduet’s balcony door with aluminum is valid to 2029 (EPD Norway, 2024). Løken Trevare has fixed and top‑swing windows valid to 2029 (EPD Norway, 2024). This is the field Lian competes in daily.
Who Lian meets in bids
Main rivals on Norwegian projects include NorDan, H‑vinduet, Lyssand‑Frekhaug, Løken Trevare, Norgesvinduet, and Nordvestvinduet. Some also partner with advanced glass suppliers that publish their own EPDs, which strengthens the submittal package.
Sustainability signals beyond EPDs
Lian shares an Eco‑Lighthouse report for 2024, which is useful context for corporate buyers focused on operations and governance, even if it does not replace a product EPD (Miljøfyrtårn report, 2024). They also highlight ECOproduct assessments that can help early screening (Lian website, 2025).
Fastest route to close the gap
Pick one or two high‑volume families first, typically the system window and the standard balcony door. Confirm the dominant PCR and program operator used by peer products in Norway so comparability is clean for A1 to A3. The real unlock is ruthless data collection across glass, timber lamella, aluminum cladding, coatings, and hardware suppliers. We advise treating utilities and transport logs like a bill of materials for carbon, then locking a single reference year. Getting this right once makes renewals painless and, frankly, faster next time.
What great looks like in practice
A tidy package covers product‑specific EPDs for the flagship window and door, a clear declaration of options that are included, and digitized datasets for takeoff tools. Add acoustic and fire variants as add‑on declarations if they sell in volume. Teams that sequence like this move from reactive to ready. It’s not glamorous, but it wins specs. It definately does.
Frequently Asked Questions
Which product categories does Lian serve and how specialized are they?
Windows and balcony doors are the core, with sliding, fixed, acoustic, and fire‑rated variants. This is a focused portfolio with several sub‑families rather than a single pure play.
Roughly how many SKUs might that create?
Given sizes, glazing, cladding, hardware, and performance options, configurations are likely in the hundreds, which is typical for project‑market window producers.
Do Lian’s products have current EPDs?
We do not see active product‑specific EPDs published as of January 2026. Prior declarations appear to be retired.
Which competitors have recent EPDs available?
H‑vinduet Fjerdingstad, Lyssand‑Frekhaug, Nordvestvinduet, and Løken Trevare show valid EPDs for windows and balcony doors, with typical validity spanning into 2029 or 2030 (EPD Norway, 2024–2025).
About the Author
With a passion for sustainability and a love for complex data, Toby helps manufacturers efficiently collect data from across their organization and get their EPDs done right. He’s especially interested in how AI can support human expertise, helping R&D and factory teams work faster, smarter, and with less friction.
