Thermomass: insulation systems for concrete walls, EPDs next

Who Thermomass is and what they sell

Thermomass designs insulation systems that create concrete sandwich walls with continuous thermal layers. The kits combine fiber‑composite connectors with prefabricated rigid insulation. Flagship lines include System NC (non‑composite), System SC (composite), System CIP (cast‑in‑place), System DW (double‑wall), and System MP (modular precast) (Thermomass site). Connector families span CC, X, MS, MS‑T, SL and TL series, paired with XPS or polyiso boards from major producers.

Breadth of the offer

Between the five named systems, multiple connector series, and thickness options, the range sits in the dozens of SKUs rather than a handful. The brand focuses on one application arena rather than many unrelated product types: insulated concrete envelopes across plants, tilt‑up slabs, and modular boxes. That pure‑play focus helps on engineering depth and shop‑floor repeatability.

What we could verify on EPD coverage today

We did not find Thermomass‑branded EPDs in the major operator libraries commonly checked by specifiers as of December 20, 2025. Leviat, the parent, does publish EPDs for other brands in its family such as HALFEN HIT thermal break connectors, verified by IBU and valid into 2028 (IBU, 2023). That is helpful brand halo, yet it does not substitute for a Thermomass connector or full‑system EPD buyers can cite by part number.

Why that gap matters on specs

Many owner teams and GCs now score materials on declared impacts. In walls, that increasingly means product‑specific Type III EPDs, or at least a current industry average where project rules allow. PCI released new 2025 regional industry‑average EPDs for insulated and architectural precast based on data from 62 plants, which many precasters will reference in bids (PCI, 2025) (PCI, 2025). If a bidder can put an EPD on the table for the wall assembly or the critical components, they are less likely to trigger conservative default values that quietly push the product out of contention.

A practical example

System NC is a likely bestseller because it is the long‑running non‑composite workhorse. If a project team insists on declared impacts per major component, Thermomass can lean on supplier EPDs for the XPS board. DuPont’s low‑GWP Styrofoam XPS has current UL‑published EPDs and reports a 94% reduction in embodied carbon versus the prior formulation (DuPont, 2024) (DuPont, 2024). Owens Corning Foamular NGX appears in that same UL context. The missing piece is a sepcific EPD for the Thermomass fiber‑composite connectors or a system‑level declaration that bundles concrete, connectors, and insulation under one verified rule set.

Where competitors show up

Thermomass most often faces:

• HK Composites on ties for insulated panels in precast and tilt‑up.
• Dayton Superior on connector systems and erection hardware in precast.
• AltusGroup member precasters on composite, carbon‑grid wall systems that target similar performance outcomes.

Note the nuance. Some of these competitors do not publish connector EPDs either. The edge often comes from the precaster’s own wall‑panel EPD or from component EPDs that make submittals friction‑free. HALFEN HIT thermal break connectors, also under Leviat, do carry an operator‑verified EPD at IBU with validity to 2028, which signals to buyers that connector‑type products can be declared cleanly (IBU, 2023).

Product lines and likely coverage today

• Connector families and accessories: strong on code reports and test data, light on public EPDs.
• Insulation boards within the systems: strong EPD availability through major XPS suppliers, including UL‑listed documents for DuPont and competitor listings referenced in the same operator ecosystem (DuPont, 2024).
• Whole walls: often covered by the precaster’s facility or product EPD, especially now that PCI’s 2025 regional industry‑average set exists for insulated precast (PCI, 2025).

Commercial takeaway for sales and product teams

If a target project prefers product‑specific EPDs or uses LEED v5 style scoring, showing up with only supplier insulation EPDs is not enough. The low‑effort, high‑return move is a connector‑only EPD first, then a system‑level EPD that matches how buyers model insulated panels. That approach avoids penalties in whole‑building LCAs and keeps bids from being swapped out late for “same‑but‑with‑EPD” alternates.

A short, fast plan to win more specs

1. Scope the reference year and plants that mold or distribute connectors. Pull utilities, resin mass, glass content, waste, and yield. Keep it plant‑simple.
2. Choose the PCR path your buyers already recognize. For North America, align to operator rules widely used in precast and insulation markets so your PDF is easy to find next to peers.
3. Publish a connector EPD first. Then model a representative system EPD for one high‑volume configuration that mirrors what the market actually orders.
4. Cross‑reference supplier insulation EPDs in your submittal pack and make downloading them one click. Small frictions cost bids.

One more signal buyers look for

Point specifiers to the parent’s sustainability stance and progress so procurement sees a consistent story across the portfolio. Leviat’s sustainability page is a simple place to start (Leviat sustainability).

The wrap

Thermomass is a specialist, not a generalist. The installed base and engineering depth are real. Closing the EPD gap at the connector and system level will protect that position in an era where many concrete packages now come with verified numbers by default. It is work, but with the right LCA partner and a white‑glove data pull, it is weeks not quarters.