I still remember the email. It landed at 4:47 p.m. on Friday, March 14, 2025. Subject line: “Specification Review Comments.” I opened it expecting a quick approval. Then I read the first comment. The architect had approved the Marazzi Moroccan Concrete Charcoal tile. They had not approved the private-label ceramic tile on the same submittal. And the reason was one line: “Please include the tile adhesive compliance requirements for the ceramic tile OEM product.”
Let me back up. I’m not a manufacturer. I’m a purchasing coordinator at an independent building-material distributor. For nearly nine years, I’ve bought two kinds of goods: stock Marazzi tile from our wholesale program, and custom products under our customers’ labels through ceramic tile OEM and masonry brick OEM arrangements. I’ve made plenty of mistakes. This one became the reason our approval process changed.
The project wasn’t a high-rise or a hospital. It was a hospitality fit-out with three material selections: Marazzi Moroccan Concrete Charcoal tile for the public entry floor, a private-label ceramic tile from our OEM program for guest corridors, and a masonry brick OEM unit from another factory for an exterior planter wall. On paper, it looked simple.
The Marazzi Moroccan Concrete Charcoal portion was familiar. It’s one of those deep concrete-look tiles that architects respond to immediately. We had stocked it, sold it, and installed it on previous jobs. The OEM tile came from a factory we had vetted. The brick sample looked right in the afternoon light. So I did the thing that gets buyers in trouble: I grouped them together and treated them as one product family.
I attached all three to a single submittal. The OEM tile data sheet I had was basically a sales sheet. It gave the dimensions and the finish. It didn’t say which setting material system applied. The Marazzi Moroccan Concrete Charcoal data sheet, in contrast, was complete. The brick sample didn’t have a data sheet at all—just a note that said “color approved.” That was the first warning. I didn’t see it at the time.
The architect’s comment wasn’t dramatic. It said something like: “The corridor floor specification requires the setting material to meet ANSI A118.15. The submitted documents do not indicate that the mortar and the tile assembly comply. Please clarify.”
I had written “thin-set mortar” in my submittal. Thin-set is not a standard. A118.15 is a standard. The two are not interchangeable.
If you aren’t a tile geek, those numbers can sound like alphabet soup. But if you’re a buyer, you need to know that tile specifications typically name both a product standard and an installation method. The product sheet has to line up with the specification. My private-label ceramic tile sheet did not. In fact, it didn’t even try.
What made it worse was that I should have known. The job spec had been in my inbox for two weeks. I had skimmed the section on tile, seen the Marazzi Moroccan Concrete Charcoal color, and mentally checked the box. I didn’t read the setting material requirements closely enough to realize they were written for the OEM tile too.
The frustrating part was that the Marazzi Moroccan Concrete Charcoal tile on the same order didn’t raise a question. Why? Because the manufacturer’s data sheet listed the properties and installation guidance clearly. A specifier could check it, compare it to the project specification, and approve it with confidence.
The private-label tile came from a ceramic tile OEM factory that made the product well. But my file didn’t prove it. If you put a customer’s label on an OEM product, you become the technical source for that product. I hadn’t asked the factory for the current data sheet. I had summarized it. The summary was fine for a sales meeting. It wasn’t fine for a submittal.
When I finally put the two documents side by side, the lesson was obvious. On the left sat the Marazzi Moroccan Concrete Charcoal sheet with its standards and test data. On the right sat my private-label summary with a color name and a case count. Same warehouse, same charcoal look, completely different level of traceability. The sample boards didn’t show that difference. The rejection email did.
The masonry brick OEM part taught me the same lesson a week later. We hadn’t reached the brick review yet, so there was no rejection waiting. But when I opened that file, I saw the same gap: a color sample, a price, an estimated ship date, and no unit data sheet. If the architect had asked about the brick’s absorption or freeze-thaw rating, I would have fumbled again.
The visual sample was good. Good looks don’t get approved. Documented performance does.
A senior coworker had warned me about this years earlier: always attach the exact product data sheet to the exact SKU, and don’t summarize what you don’t fully understand. I nodded, ignored it, and learned the hard way. Now that sentence is on a sticky note above my monitor.
After this rejection, our team put together a ten-minute pre-submittal checklist. It’s not glamorous. It’s effective:
That checklist came too late for the March 2025 schedule. The private-label ceramic tile was eventually approved after we resubmitted with the correct mortar data, but we lost two weeks and paid for overnight samples and expedited review fees. I count that as roughly $3,600 of my own mistakes. Five minutes of checking would have caught it.
As of early 2026, I still use that checklist. Standards get updated, so I always verify the current edition from the project’s contract documents before I send anything. But the core habit hasn’t changed: one product, one data sheet, one clear compliance path.
That’s the lesson, in the end. The Marazzi Moroccan Concrete Charcoal tile got approved because the manufacturer had already done the hard work. The OEM product failed because I hadn’t. A product is only as good as the paperwork behind the label.
Emilia Novak is a flooring and architectural-surfaces analyst covering ceramic and porcelain tile, natural stone, resilient flooring, underlayments, countertops, adhesives, grout, and installation accessories. She uses ASTM C373 and ASTM C648 test evidence while comparing water absorption, breaking strength, slab flatness, substrate moisture, joint width, slip resistance, and installed tolerances. Her specification guides help architects, contractors, and buyers match surface systems to traffic, wet-area exposure, maintenance demands, and substrate conditions.