DÖRKEN’s first EPD arrives for DELTA roofing
Specs are moving faster toward product‑specific transparency. DÖRKEN just entered the arena with its first Environmental Product Declaration for a flagship roofing underlay. If you sell or specify membranes, this matters for submittals, shortlists, and staying visible in database‑driven searches that gatekeep projects today.
What dropped and why it matters
DÖRKEN has published its first EPD for DELTA‑MAXX PLUS, a waterproof yet vapor‑permeable underlay for pitched roofs and façades. The declaration is current through 2030 and is registered with EPD Hub using the EPD Hub Core PCR v1.1. That combination puts a familiar, jobsite‑proven membrane into spec‑ready shape for projects that ask for third‑party verified data.
DÖRKEN is best known in building envelopes for DELTA membranes, plus complementary tapes, sealants, and accessories used by roofers and façade installers. Having an EPD removes friction in submittals and helps avoid the default penalties many owners apply when products lack product‑specific documentation.
The declaration basics
Here are the essentials teams will look for on day one. The EPD covers DELTA‑MAXX PLUS as a product‑specific underlay membrane for roofs and external walls. It is verified by EPD Hub and references the EPD Hub Core PCR v1.1. The document shows an expiry of 2030‑09‑06. An external LCA developer is not stated in the public record.
Competitive picture in roofing underlays and weather barriers
Membranes are a crowded field, yet EPD coverage is uneven. This first EPD puts DÖRKEN on the same playing field specifiers already use to screen options.
- DuPont Tyvek systems feature multiple current EPDs across air and water barriers, including records with expiries into 2030 that keep them visible in major databases.
- BMI Group lists underlay and roofing membrane EPDs via Kiwa with validity into 2029, so they show up alongside single‑ply players in membrane searches.
- SIGA has a narrower footprint with an IBU‑verified record for a temporary waterproof membrane that remains valid into 2027.
Translation for bid rooms. DÖRKEN is catching up to established names that arrive with EPDs on file, and it will stand out in shortlists where some niche or regional brands still lack product‑specific declarations. One solid, recognizable SKU is often the wedge that opens the door for a portfolio.
What specifiers will scrutinize next
Two quick checks usually follow the EPD box‑tick. First, compatibility and scope alignment, meaning does the underlay EPD actually match the intended assembly and climate assumptions. Second, the accessory story, since tapes and sealants drive real‑world airtightness and can make or break a blower‑door target. When those are clear, submittals move faster and substitution risk drops.
Make it easy to find
We looked for an EPD download on DÖRKEN’s product and sustainability pages and could not locate a posted PDF as of January 5, 2026. Visibility matters because many project teams pull documents from manufacturer sites during submittals. Add a clearly labeled EPD link to the DELTA‑MAXX PLUS product page and to any sustainability hub so specifers do not stall.
What to do with this momentum
Capitalize on the first EPD by mapping the next two to three high‑runner SKUs in the same family, then build an accessory mini‑library that aligns with the underlay. We see teams move faster when the data wrangling is taken off their plate and internal subject‑matter experts only review. That is how portfolios go from a single EPD to full‑line coverage without burning engineering hours.
The takeaway
DÖRKEN has stepped into transparent procurement with an EPD for DELTA‑MAXX PLUS. In a category where Tyvek and BMI are already searchable with verified records, this debut closes a credibility gap and gives project teams one more membrane they can specify with confidence. Keep the momentum by publishing the file on the website and lining up the next SKUs, so every shortlist search returns DÖRKEN in the results.
Frequently Asked Questions
What exactly did DÖRKEN publish?
A product‑specific, third‑party verified Environmental Product Declaration for DELTA‑MAXX PLUS, a waterproof and vapor‑permeable underlay for roofs and façades. It is registered with EPD Hub under the EPD Hub Core PCR v1.1 and shows an expiry of 2030‑09‑06.
Which program operator issued the EPD?
EPD Hub is listed as the program operator. This signals EN 15804 compliance and a public registry most specifiers can access.
Is an external LCA developer named?
Not publicly stated for this EPD. If one is added later in the operator listing, include it in submittals to answer due‑diligence questions quickly.
How does this stack up against competitors?
Large brands like DuPont have multiple current EPDs spanning air and water barriers, and BMI lists underlay EPDs valid into 2029. SIGA shows a narrower set. DÖRKEN now appears in the same searches, which reduces substitution risk where EPDs are requested.
What should DÖRKEN do next to win more specs?
Publish the EPD PDF on the DELTA‑MAXX PLUS product page, extend coverage to additional high‑volume membranes, and bundle guidance on compatible tapes and sealants. That combination answers the next three questions every reviewer asks.
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.
