Congrats, Dörken Systems’ first EPD is live
A familiar building‑enclosure name just turned on a powerful new spec signal. Dörken Systems has entered the transparency arena with its first Environmental Product Declaration for a flagship membrane. That single PDF now shortens conversations with architects who default to EPD‑backed options in competitive bids.
A big first for a membrane specialist
Dörken Systems, known for DELTA air, water, and vapor control solutions for roofs and walls, has published its first Environmental Product Declaration. It covers a diffusion‑open, water‑tight roof and wall underlay membrane used across residential and light commercial envelopes. Think of it as the breathable raincoat under cladding that keeps assemblies dry while letting moisture escape.
What was published and under which rules
The EPD is product specific and names DELTA‑XX PLUS UNIVERSAL. It was issued in December 2025 and verified under the EPD Hub program using the EPD Hub Core PCR v1.1. The scope speaks to a single membrane product rather than a broad family, which makes comparability straightforward for specifiers evaluating like for like in Division 07.
Why this matters in specs right now
More owners and design teams require product‑specific, third‑party verified declarations in submittals. Without one, teams often must model pessimistic impacts that can sideline otherwise strong products in tight carbon budgets. Having an EPD removes that penalty and helps keep the conversation focused on performance, compatibility, and installed cost.
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Competitive lens in the building‑enclosure set
Closest peers in membranes already show activity. DuPont carries EPD coverage for Tyvek air and water barrier systems in the weather‑barrier category. SIGA lists EPDs for select underlay and vapor control layers. Carlisle’s coating and waterproofing unit has air‑barrier and membrane EPDs for sheet and fluid products. That means Dörken’s Decemeber release does not appear as a novelty in the category. It is a catch‑up that puts a credible DELTA underlay option on the shortlists where an EPD is the price of entry.
What it means commercially for Dörken’s portfolio
One strong, product‑specific EPD is a door opener. It gets the brand into projects that screen on declarations, and it creates a clear template for follow‑on LCAs across adjacent DELTA SKUs. Roofing underlays and WRBs often ride together in the same submittal. A steady cadence of product‑specific EPDs across those SKUs can turn a single spec into a system spec.
Smart next steps to build momentum
Publish the PDF everywhere it counts. Link the EPD on the DELTA‑XX PLUS UNIVERSAL product page, add it to sustainability and resources hubs, and note it in guide specs. If it is not yet featured on the website, make that update. Visibility is how specifiers find and trust the file in minutes, not hours. Internally, align sales and technical teams on when to attach the EPD to bids and how to answer common LCA questions.
A quick word on delivery partners
Program operators and LCA partners matter. The best outcomes pair a clean data‑collection plan with an experienced team that keeps factories focused on production while the heavy lifting on modeling and verification happens in the background. That combination is how manufacturers move from a first EPD to a portfolio without losing steam.
Bottom line for manufacturers watching this move
Dörken Systems just flipped the on switch for EPD‑backed specability on a flagship membrane. Competitors with established declarations will feel less lonely in submittal stacks. Competitors without membrane EPDs will feel the gap. The transparency race rarely ends. It compounds.
Frequently Asked Questions
Which product did Dörken Systems cover in their first EPD and is it product-specific or a family EPD?
The EPD covers DELTA‑XX PLUS UNIVERSAL. It is a product‑specific declaration for a roof and wall underlay membrane.
When was the EPD issued and under which program operator?
It was issued in December 2025 and verified by EPD Hub under the EPD Hub Core PCR v1.1.
Do close competitors already have EPDs for comparable membrane categories?
Yes. DuPont lists EPDs for Tyvek air and water barrier systems. SIGA has EPDs for select underlay and vapor control layers. Carlisle Coating & Waterproofing shows EPDs for air‑barrier and related membrane products.
What should manufacturers do after publishing a first EPD to maximize ROI?
Add it to product pages, sustainability hubs, guide specs, and sales toolkits. Train teams on when and how to use it in bids. Plan a roadmap to extend coverage to adjacent SKUs so a single EPD grows into a system play.
About the Author
Hazel Brooks is an editor at EPD Guide covering EPDs and the fast-evolving sustainability data landscape. She tracks program-operator updates, standards and guidance changes, and new EPD releases, connecting the dots across the market to report on trends, shifting expectations, and the competitive EPD landscape. Her work focuses on making complex data sets easier to navigate and access, so manufacturers and sustainability teams can act with clarity and confidence.
