Stonhard at a Glance: Products, EPDs, and Spec Power
Stonhard is a century‑old name in resinous flooring. If your projects live in food plants, pharma suites, hospitals, labs, or busy concourses, you have likely met Stonclad, Stonshield, Stonres, or Stontec. This quick read maps what they sell, where EPDs already support specification, and where gaps may be costing bid wins on LEED‑focused jobs.
What Stonhard makes
Stonhard designs and installs seamless resin systems for floors, walls, and linings with epoxy, urethane, and MMA chemistries. Think heavy‑duty mortar floors for thermal shock, decorative quartz and flake systems for public spaces, resilient urethane terrazzo for healthcare, ESD systems for electronics, and a deep bench of primers, membranes, sealers, and additives. Their catalog spans multiple named families like Stonclad, Stonshield, Stonres, Stontec, Stonlux, Stonproof, and Stonglaze under MasterFormat Division 09.
Breadth of the offering
On the product page, Stonhard surfaces broad families plus “complementary products” that build full systems across commercial and industrial use cases (Stonhard Products). That translates to several product categories and, when you count system variants, colors, and accessories, easily dozens of SKUs. If you sell into many markets, that variety is a feature, not a bug, because it lets you align performance, install speed, and look without re‑educating specifiers each time.
EPDs today
Stonhard states that several products carry third‑party verified Environmental Product Declarations, which helps project teams model embodied carbon with product‑specific data rather than default penalties (Stonhard Sustainability). We also see EPD activity focused on resinous flooring components and systems. Examples that appear in the market include Stonclad UR, Stonblend HDF, Stonkote HT4, Stonseal CF7, Stonproof ME7, and conductive topcoats. Validity windows on recent resinous EPDs from peer brands run five years, so teams expect current documentation on request.
Likely gaps to watch
Coverage looks strongest around heavy‑duty floors and supporting layers. Some decorative or resilient showpieces may not yet feature a public, system‑level EPD in every region. For instance, Stonres is positioned for healthcare and education, yet we did not find a widely accessible, product‑specific EPD for it as of November 2025. That matters when owners mandate EPD‑bearing finishes across all occupied areas to simplify submittals.
Why it matters on LEED projects
Under LEED v4.1, teams earn up to 2 points through the EPD credit. Path one asks for at least 20 qualifying permanently installed products from five manufacturers, and product‑specific Type III EPDs count as 1.5 products each, which can tip a tight schedule (USGBC, 2024). If a flagship system lacks an EPD, specifiers often pivot to comparable systems that keep the credit moving without redesign.
A concrete example
If Stonres is your target finish for operating rooms, a common alternative is Sika ComfortFloor PS‑23, which has a third‑party verified EPD published via NSF with validity listed through December 28, 2028. That single document contributes directly to LEED v4.1 MR credits on disclosure and can de‑risk approvals for healthcare owners (NSF, 2024). Similar dynamics show up in school corridors and public lobbies where decorative resin floors face EPD screens.
Who Stonhard meets most often
In resinous floors and urethane mortars, frequent competitors include Sika, Sherwin‑Williams resin flooring, Dur‑A‑Flex, Tnemec, and Flowcrete. Several publish product‑specific EPDs for floor systems or primers and topcoats, which keeps them specification‑ready for public bids and corporate sustainability policies. For instance, Sika lists multiple resinous systems with EPDs on the NSF directory, and Sherwin‑Williams provides EPDs for selected resin flooring solutions on its site (NSF, 2024 and Sherwin‑Williams, 2025).
Practical next steps for product teams
If you manage Stonhard‑like portfolios, prioritize EPDs where specification friction is highest. Start with the two or three systems that drive most revenue in healthcare, food and beverage, or labs. Pick the prevailing PCR used by competitor systems to ensure apples‑to‑apples comparability. A great LCA partner will take on the heavy data wrangling across plants and bill of materials and make collection painless for ops. That white‑glove approach is how you keep engineers focused on yield and quality while the enviromental paperwork progresses.
Fast path to fuller coverage
Build a one‑year plan that locks in EPDs for best sellers, then backfill accessories like primers and sealers so entire assemblies can be submitted without gaps. Tie publication dates to major bids and trade‑show seasons, keep renewal reminders inside your PLM calendar, and mirror final PDFs on your sustainability page for frictionless access. The result is simple. More specs stick, fewer substitutions happen late, and your team stops losing time to avoidable document chases.
Frequently Asked Questions
Does a Stonhard resin floor contribute to LEED if the system does not have a product-specific EPD?
It can still contribute if you use an industry-wide EPD or other disclosure options, but product-specific Type III EPDs are valued higher and help hit the 20‑product threshold faster in LEED v4.1 MR credits (USGBC, 2024).
Which Stonhard systems are most likely to benefit commercially from an EPD first?
Decorative and resilient systems used in healthcare, education, and public lobbies tend to face EPD screens. Prioritize Stonres, Stontec, and Stonshield variants, followed by heavy‑duty mortars like Stonclad used in food plants.
Where can I find Stonhard’s current sustainability information and EPD note?
See Stonhard’s sustainability page, which confirms several products have third‑party verified EPDs. It is the best place to host final PDFs for easy submittals (Stonhard Sustainability).
About the Author
Eric works at the intersection of sustainability, regulation, and business strategy, helping manufacturers navigate the evolving landscape of EPDs and LCAs. Having spoken with hundreds of teams across North America, brings a deep understanding of what drives ROI, what regulators are asking for, and how companies can stay ahead with smart, scalable approaches to environmental reporting.
