Congratulations Weiss, and welcome to the EPD arena

What just launched

Weiss has published its first two product‑specific EPDs for COSMO composite panels. The debut went live in October 2025, followed by a second document in November. Both are verified and published by EPD Hub and align to EN 15804 A2 rules.

What the EPDs actually cover

The new declarations represent product families rather than single SKUs. One covers COSMO Frame PVC and PVC/dB composite panels used around windows and doors for frame extensions and coupling profiles. The other covers COSMO Therm PVC insulating panels designed to boost thermal performance and airtightness in fenestration installations. Scope language signals multiple variants within each family, which helps sales teams cover more submittal ground with fewer PDFs.

Why this matters for Weiss, now

Weiss makes adhesives, sealants, and composite panels used by fabricators and façade teams. Around the opening is where specs often demand proof. Without an EPD, reviewers default to conservative assumptions that make materials look heavier than they are. With these two documents in hand, COSMO panels move from workaround to straight‑up selectable in carbon‑aware bids, including LEED v5‑leaning projects.

Program‑operator note that boosts acceptance

Both EPDs sit with EPD Hub, which is recognized by ECO Platform as an Established ECO EPD Programme Operator, meaning EN 15804 EPDs can carry the ECO EPD mark and appear in the ECO Portal. EPD Hub also states an EPD library of over 4,300 entries, a sign specifiers will actually find the records when they search (EPD Hub, 2025) (EPD Hub, 2025) (EPD Hub, 2025). If you want a quick primer on the operator, see our overview of EPD Hub.

Competitive snapshot in fenestration accessories

Meesenburg Großhandel KG. A direct peer on window surround components. Their blaugelb line already carries multiple EPDs covering insulation and connection profiles under IBU and EPD Hub. Translation for bids, they have comparable transparency on similar use cases.

Illbruck. A familiar name on façade membranes and window tapes. Multiple product‑specific EPDs for perimeter membranes are current and valid into 2030 under Smart EPD. Different material, same point of comparison on the building envelope.

REHAU. On full window systems, at least one product‑specific EPD for a SYNEGO configuration is public via IBU. Not a one‑to‑one product match with COSMO panels, yet it shows how fenestration buyers are primed to expect verified data.

The takeaway. Weiss has entered the transparency arena where immediate neighbors already publish. These two EPDs close a gap around window and door interfaces, which is exactly where project teams sort submittals when whole‑building LCA targets apply. It’s definately visible on shortlists.

Spec‑relevant details at a glance

• Publish months. October 2025 for the first COSMO family, November 2025 for the second.
• Product types. Family‑level declarations for COSMO Frame PVC and PVC/dB composite panels, plus COSMO Therm PVC insulating panels used around fenestration openings.
• Program operator. EPD Hub, aligned to EN 15804 A2.

Where to find the documents online

We looked for the new EPD PDFs on Weiss public pages and could not locate them as of January 15, 2026. Representative product pages for COSMO Therm exist on the corporate site, which is a good anchor to add an EPD download section next:

• COSMO Therm overview page on Weiss Chemie
• COSMO Therm PVC variants and specs

Visibility matters. Owners and GCs increasingly scan program libraries and manufacturer sites in parallel. Posting the EPD links beside COSMO panel specs will shorten submittal loops and reduce back‑and‑forth.

What to watch next

Extend coverage across adjacent families that show up in the same submittal packages, keep issuance months staggered so nothing ages out during bid season, and make website placement a habit. The commercial return usually shows up fast once buyers can reference a product‑specific, third‑party EPD instead of falling back to generic factors.

We keep saying this because it saves teams time. Pick an LCA partner who makes internal data pulls painless, aligns to the same PCRs competitors use, and delivers publish‑ready documents with minimal ask on your plant and product leads. Your engineers will thank you and your spec hit‑rate will too.