Indiana Limestone Company: products and EPDs, fast

Who they are now

Indiana Limestone Company is operated as part of Polycor, a large North American and European quarrier and fabricator known for limestone, marble, and granite (PR Newswire, 2018). The ILCO site routes buyers to Polycor channels for sampling and orders, which tells us brand, quarrying, and fabrication are integrated under one operating model.

What they sell

ILCO’s core is dimensional Indiana limestone. That spans raw blocks, slabs, and boulders for fabricators, plus finished architectural pieces such as cladding panels, thin veneer, pavers, treads, sills, coping, and cut‑to‑size elements. In practical terms, that is several product families with standard items in the dozens and project‑specific variants easily in the hundreds when color, finish, and thickness options stack up.

EPD coverage at a glance

Polycor publishes product‑specific, third‑party verified EPDs that cover the major limestone applications architects actually specify. Two anchors to know:

• Limestone cladding systems are covered by a Sustainable Minds EPD with validity shown as January 31, 2023 to January 30, 2028, including the UL Part B cladding PCR reference (Transparency Catalog, 2025).
• Limestone floor and pavers are covered by a Sustainable Minds EPD with validity shown as February 13, 2023 to February 13, 2028, using the SM Part B for interior and exterior stone flooring (Transparency Catalog, 2025).

For countertop uses, Polycor also lists stone countertop EPDs, which helps teams standardize submittals across interiors programs (Transparency Catalog, 2025). Net result, the headline commercial categories are covered with product‑specific declarations that meet current practitioner expectations.

What might still be uncovered

Blocks, slabs, and boulders are intermediate goods, so they are rarely sold with a product‑specific EPD. Standard trims like sills and treads sometimes get bundled under a cladding EPD in practice, but they are not always named line items. When a named product‑specific EPD is missing for a scope item, specifiers can fall back on the Natural Stone Institute’s industry‑wide EPDs for cladding, flooring or countertops, published in October 2022, which remain valid references for benchmarking in North America (Natural Stone Institute, 2022).

How many categories and SKUs, roughly

• Categories served: building facades, thin and full‑bed veneer, landscape and hardscape, interiors flooring and stairs, countertops and cut‑to‑size. That is several categories rather than a narrow single‑product play.
• SKUs: standard stocked pieces look to be in the dozens, while total combinations across colors and finishes land in the hundreds. The long‑tail is driven by project‑specific cutting and finishing.

Competitors you will see on bids

On like‑kind limestone, spec sets often also show TexaStone, Vetter Stone, Bybee Stone, Continental Cut Stone, and regionals in Indiana and Texas. On substitutable facades and sitework, brick, architectural precast, terracotta, fiber cement, and manufactured stone veneer appear side by side. Many of those categories come with mature EPD libraries, so a missing product‑specific EPD for a stone scope can become a tiebreaker on projects pursuing LEED v5 disclosure and optimization credits.

Commercial takeaways for sales and spec teams

If your best‑sellers include thin veneer, sills, and treads, confirm whether the existing limestone cladding EPD is acceptable to the reviewer for those parts. If not, extend coverage so the whole masonry package clears ESG submittals in one pass. That lowers substitution risk and keeps price from being the only lever. The cost to add a focused EPD is often dwarfed by a single mid‑size win in higher‑ed or civic work, where EPD‑ready schedules move faster and draw fewer RFI cycles.

A note on sustainability comms

Polycor communicates a carbon‑neutral commitment and broader sustainability narrative in its owned channels, which can be useful for RFQ framing and executive summaries in submittal books. See the company’s sustainability‑focused blog content for talking points that pair with EPDs while avoiding greenwash claims (Polycor sustainability blog, 2025).

Smart next steps

• Map ILCO’s current quotes to the two limestone EPDs above and capture where trims or accessories are not clearly covered by name.
• Align on the PCR families competitors use, then mirror that choice to avoid apples‑to‑oranges comparisons in A1–A3.
• Pick a recent full production year and assemble utilities, yields, and transport data once, with a partner that handles cross‑plant data wrangling so engineering time stays on the floor. Less email ping‑pong, more spec availabiliity.

Bottom line

Indiana Limestone Company, through Polycor, already has product‑specific EPDs for the big application buckets buyers care about. Close the small gaps around accessory items and intermediate goods, and the brand’s stone keeps winning on aesthetics, durability, and now, paperwork that clears the sustainability bar with fewer headaches.