This checklist is for anyone who specifies, orders, or installs tile in commercial or high-end residential projects. If you've ever had a pallet show up with the wrong shade, the wrong tile, or material that doesn't meet the spec, you know the headache. I use this exact sequence on every order I review.
There are five steps, and skipping one cost us an $18,000 redo in Q2 2024. That project still haunts me. Let's get into it.
Step 1: Match the Product to the Spec Sheet — Not the Sales Order
This sounds obvious, but most discrepancies I catch are between what the sales order says and the actual product. The sales order might say "Ainslee Park 12x24," but the box label says something slightly different. Or the color code on the box doesn't match the one you specified.
Here's what I do: I pull the original spec sheet from the project documents—not the purchase order, not the invoice, the original spec. Then I physically check the box labels against it.
What to verify:
- Manufacturer name and collection
- Product name and SKU
- Size (measure a tile, don't trust the label)
- Color code / shade number
- Finish (matte, polished, textured)
We had a shipment of what was supposed to be "Malibu White" arrive as "Malibu White"—correct SKU, correct box. But the shade was visibly different. Turned out the manufacturer had run a second production batch with a slightly different glaze formula. Same name, different color. The spec sheet didn't capture that nuance. Now my contracts include a clause about batch consistency.
I didn't fully understand the importance of this step until that $18,000 redo. The vendor claimed it was 'within industry standard.' We rejected the batch anyway. They redid it at their cost, but the project was delayed three weeks.
Step 2: Check Quantity + Calculate Waste Allowance
Most orders look right on paper until you do the math. I review roughly 200+ tile orders annually, and quantity errors—both over and under—are the most common issue.
My process:
Count the total square footage on the delivery. Then add up the square footage in each room or area from the layout plan. Then apply the waste factor your installer uses. Standard is 10-15% for straight lay, 15-20% for diagonal or herringbone patterns.
Here's the gotcha: if the project has multiple tile products (floor, backsplash, shower walls), you need to calculate waste separately for each. A single 5% overall surplus can hide a 15% deficit in one specific tile type.
Why does this matter? Because running out mid-installation means either a project delay or ordering a second batch that might not match color. I've seen projects where the second batch was noticeably different—and the contractor had to rip out the first half.
That's a risk you can avoid with a calculator and ten minutes.
Step 3: Perform a Visual Grading Sample (The One Everyone Skips)
This is the step I almost never see on other people's checklists. On a large order, say 5,000+ square feet, I open three random boxes from different pallets and lay out a few tiles side by side on a clean floor.
What I'm looking for:
- Shade variation within the same batch (acceptable if consistent with the look)
- Lippage issues if tiles are slightly warped
- Surface defects: pinholes, chips, crazing (fine cracks in the glaze)
- Consistency of the rectified edge if it's a tight grout joint installation
I ran a blind test with our installation team once: same tile, two different batches. Over 80% of the installers identified one batch as 'visibly inferior' without knowing which was which. The cost difference per square foot was minimal. On a 2,000-square-foot run, that's a few hundred dollars for measurably better results.
Don't just trust that the tile looks fine in the box. Lay it out. See how it behaves in natural light. This catches problems that no spec sheet can predict.
Step 4: Verify All Accessories, Trim, and Transition Pieces
This is where projects fail—not on the field tile, but on the Schluter trim, the bullnose, the cove base, the transition strips. If those don't match or aren't ordered, the installation can't finish.
What to check:
- Linear feet of all trim profiles matches the layout plan
- Color and finish of Schluter or other metal trims match spec
- Inside and outside corners are included (different profiles)
- Expansion joints and movement accommodation strips
- Stair nosing if applicable
We didn't have a formal verification process for accessories. Cost us when an order of shower niche trims showed up in the wrong profile—the niche was 12x12, the trim was sized for 12x24. The trim had to be reordered. Job sat idle for a week.
The third time a similar problem happened, I finally created a simple checklist for trim items. Should have done it after the first time.
Step 5: Confirm the Installation Baseline
This is the step that happens before any tile goes down, but after the substrate is ready. It's the final sanity check.
Questions to answer:
- Is the substrate flat within tolerance (typically 1/8" in 10' for tile)?
- Does the installer have the correct thinset mortar and trowel notch size per the tile manufacturer's recommendation?
- For large-format tile or natural stone, is the anti-fracture membrane or decoupling membrane specified and on site?
- Do you have a sample of the final layout (pattern, grout joint width) approved in writing?
Skipping this step is the classic 'thought it was fine' mistake. I knew we should confirm the substrate flatness before tile went down, but thought 'the contractor has been doing this for years.' Well, the odds caught up with me when lippage showed up across 800 square feet of rectified porcelain. The grout joints looked terrible. The fix involved grinding down high spots—costly and messy.
Now I make sure the installer lays at least a 3x3 grid of tile in the corner of the first room before proceeding. If there's a lippage problem at that scale, it saves weeks of rework.
Final Notes: Common Mistakes I See Repeat
- Trusting the label without measuring: Tile thickness varies batch to batch. If your trim is sized for the wrong thickness, it won't fit.
- Assuming all Schluter profiles are identical: They're not. The plastic ones behave differently than the metal ones. Ensure the spec calls out the exact profile number.
- Not photographing the delivery: Take pictures of the boxes, labels, and any damage before anything is unloaded. Chain of evidence matters if there's a problem later.
- Relying on memory: Write down the quantities, the waste calculation, the visual grading results. A scrap of paper is better than a good memory.
This checklist isn't complicated. It's five steps, maybe 45 minutes of work total on a medium-sized order. But skipping any one of them can cascade into delays, costs, and frustration. I know because I've learned that lesson the hard way.
