The Florida Tile FAQ I Wish Someone Handed Me in 2019

I've spent the last six years working with tile specifications and bulk orders for commercial projects in Florida — first as a procurement lead, now in a technical-spec role at Florida Tile. Along the way, I've made and documented 11 significant mistakes, totaling roughly $16,000 in wasted budget, give or take. This article is the FAQ I wish someone had handed me in 2019. These are the seven questions I get asked most by buyers and specifiers, and the answers that cost me real money to learn.

Questions covered in this guide:

• What's the actual difference between ceramic and porcelain tile — and why does it matter in Florida?
• Porcelain tile specification guide: what does a good one include?
• How do I choose the right tile adhesive specifications?
• What do first-time buyers get wrong with mosaic tile OEM orders?
• What should I know about tile roof Florida requirements?
• When is paying extra for faster delivery actually worth it?
• What's the question buyers never ask but always regret?

1. What's the actual difference between ceramic and porcelain tile — and why does it matter in Florida?

The technical difference is water absorption. Per ANSI A137.1, porcelain tile has an absorption rate of 0.5% or less, tested under ASTM C373. Ceramic is more porous — essentially anything above that threshold.

That distinction matters in Florida more than almost anywhere else. We get humidity, torrential afternoon storms, salt air near the coast, and pool decks that stay wet for days. In March 2022, I specified ceramic tile for an exterior walkway in Tampa. It looked great for eight months... then efflorescence staining appeared across the surface. Remediation cost $2,600 (unfortunately, that price didn't include the client's patience).

Since then, my default for any exterior or wet-area application is porcelain. Ceramic still works for interior walls and light-traffic floors, but "ceramic-look porcelain" and "porcelain-look ceramic" aren't the same product. Verify the absorption rating on the actual technical data sheet, not the marketing page.

2. Porcelain tile specification guide: what does a good one include?

In 2023, I wrote a spec that said "24x48 porcelain, gray, matte finish." That's not a specification — that's a wish. The tile went into a hotel corridor and wore visibly within six months, because I hadn't specified a PEI abrasion rating that matched the traffic level. The supplier met my spec; my spec just wasn't sufficient for the job. That was a $3,200 order with no recourse.

A porcelain tile specification guide that protects everyone should include:

• Water absorption ≤ 0.5% (ANSI A137.1 / ASTM C373)
• Breaking strength and modulus of rupture (MOR)
• PEI abrasion rating for glazed tile
• Slip resistance (COF) — critical for commercial floors in Florida
• Shade and caliber variation limits
• Rectified or non-rectified edges

Now I attach the manufacturer's published technical data sheet, with its issue date, to every purchase order. The Tile Council of North America publishes the TCNA Handbook (2024 edition at tcnatile.com), which walks through specification considerations by installation type. I keep a copy on my desk. It's saved me more than once.

3. How do I choose the right tile adhesive specifications?

Tile adhesive isn't "just mortar." The "all thin-set is the same" thinking comes from an era when tile was smaller and more forgiving. Today, with large-format porcelain and stricter codes, that's completely changed.

The TCNA Handbook classifies mortars by ANSI standard: A118.1 for modified thin-set, A118.4 for latex-modified, A118.15 for improved modified, and A118.11 for rapid-setting. For dense, non-absorbent porcelain, you generally need modified thin-set — the polymer additives are what create the bond.

In June 2023, I green-lighted an unmodified thin-set for a porcelain floor at a medical clinic in Orlando. The GC said "it's all the same," and I didn't push back. The bond failure was caught during moisture testing — $1,800 of labor to redo, plus a 6-day delay (ugh, don't ask me how I explained that to the project manager). That failure changed how I think about adhesive specs. One failed test, and suddenly "I checked the mortar type" felt like an excuse, not an answer.

Florida-specific realities to include in any tile adhesive specification:

• Hot weather: watch pot life, especially with large-format tile. Rapid-setting mortar (A118.11) can keep crews productive.
• The substrate matters: concrete slab, plywood, and existing tile each require a different mortar class.
• The spec belongs in the submittal, not the field. If it's not written down, it doesn't exist.

4. What do first-time buyers get wrong with mosaic tile OEM orders?

Mosaic tile OEM orders are how hospitality and commercial projects get a custom look without designing a completely new product line. The flexibility is great. The margin for error is brutal.

My worst example: February 2024. I ordered 200 sheets of 12-inch x 12-inch mesh-mounted mosaic for a lobby feature wall. Sheet size? Specified. Mesh orientation? Specified. Allowed color variation between batches? ...Not specified.

The first 50 sheets matched the sample beautifully. By sheet 150, the tone had shifted noticeably warmer. On a feature wall, the transition line was obvious. The client noticed within two hours of installation. We replaced the wall, and the OEM replaced the material. The install labor — $1,150 — was on me.

What's now on our OEM pre-order checklist:

• Specify color tolerance against a physical sample — not a screenshot.
• Confirm mesh backing type, sheet size, and edge details in writing.
• Ask "Can you guarantee all sheets from one production batch?" and get the answer in the contract.
• Request 2–3 pre-production sheets and approve them before full production runs.

And here's the question nobody asks until it's too late: what does "lead time" really mean? Sometimes it's "to the dock," not "to your warehouse." A 3-week lead time that turns into 5 will test every relationship on the project.

5. What should I know about tile roof Florida requirements?

Tile roof Florida installations are different from roofing tile markets elsewhere. Two reasons: wind loads and product approvals.

The Florida Building Code (2023 edition) sets wind-load requirements for roofing systems that are more demanding than most states. In Miami-Dade County specifically, roof tile must have product approval from the county. In 2023, I had a project in Broward — one county over — where the specified tile's approval paperwork got questioned during plan review. That was a 3-week hold while the manufacturer's engineering team re-issued documentation.

Check the approval's current status

Product approvals are renewed periodically. An expired approval means the tile is not code-compliant, even if it's physically identical to the version that was approved. It took one painful project to learn to verify this before writing the spec, not after.

Specify the attachment method

Concrete and clay roof tile typically weigh 8–10 lbs per square foot, and the code's requirements for fasteners, mortar, or adhesive vary by wind zone. I route every roof tile spec through a structural engineer before it reaches a client. A few hundred dollars in consulting beats a rejected permit.

6. When is paying extra for faster delivery actually worth it?

Every project manager with a deadline and a budget asks me this. My answer, after six years: more often than you'd expect.

Here's the calculation I use. If the cost of missing the deadline — liquidated damages, idle install crews, lost credibility — exceeds the rush fee, pay the rush fee. You're not buying speed. You're buying certainty.

In March 2024, I approved a $400 rush fee on an adhesive order. The alternative was missing a showroom opening with a $15,000 event and a final inspection 10 days out. The supplier quoted 5–7 business days versus 12–14 standard, and their on-time record for that lane was documented at 98%. Calculated the worst case: a $15,000 event cancellation plus a client relationship that might never fully recover. Best case: I save $400 and look prudent. The expected value said pay the fee, but I still hesitated. I approved it, then immediately wondered if I could have negotiated. The tile arrived on day six, the inspection passed, and the event went off without a hitch. Worth every dollar.

What I won't do is pay a premium for vague promises. "We'll try our best" without a track record isn't certainty — it's a coin flip. I got burned twice in 2021 by "probably on time" commitments. Now I ask for on-time percentage, in writing, before I pay any rush fee.

7. What's the question buyers never ask but always regret?

It's not about the tile in your warehouse. It's about the tile you'll need later: "Will this same product and batch still be available in 8 months when I need to make repairs or extend the installation?"

Tile products get discontinued. Production batches shift color subtly. Once a line is gone, matching becomes nearly impossible. I now order 5–10% extra on every commercial job and store it on-site. On a $15,000 tile order, that might be $1,500 in extra material — still cheaper than replacing an entire floor because you couldn't match 40 square feet.

It took me 6 years and roughly 60 bulk orders (give or take — I'd need to check the system for the exact count) to understand that the best suppliers are the ones who answer spec questions honestly and put things in writing.

Three questions I use to vet any supplier:

• "Can I see your most recent technical data sheet — and what's its date?" If it's over 12 months old, why?
• "Which ANSI or TCNA standard applies to this product in my application?" A competent rep doesn't need to search for the answer.
• "What's your batch-to-batch color control process?" The right answer is about tolerance management, not "that never happens."

If they answer all three well, they're probably worth keeping on your list. If not — keep looking.