11/15/2025
Do it ONCE, do it RIGHT
Why Good LOOKING Tile Work Fails (Even When It “Looks Fine”) I have attached some photos of a job i had because the first contractor's tile was falling out the second time they used the shower. (It has been years ago now, and still solid as the day I installed.)
Cracks, loose tiles, or grout popping out. The crazy part? Most of it looked perfect when finished, then I had to re-do what should have been warrantied or just done right in the first place.
Here’s what’s usually going on:
Poor adhesion- this happens most commonly when there is no back buttering performed, or the mortar skins over before the tile is set. Unless you know how to inspect DURING the install, you won't know until there is a problem, usually a few months or a year or two after install. When setting the tile, touch the mortar with your DRY finger, if it sticks, it will stick to the tile, if not, it won't.
Wrong thinset or grout type — especially over plywood or old flooring. Mortar doesn't adhere well directly to wood. A primer or tile backer needs to be installed so it stays where it should. Some use mastic.....it is faster, and cheaper, but vulnerable to water and molds easily, so i never have. I do use it to seal air ducts though.
When hiring someone, always ask:
“What waterproofing system do you use? What are the important steps for waterproofing?” There are many legit ways to waterproof out there. It is always done behind the tile and tested before tile setting begins. An overnight leak down test is industry standard and a MUST have for any reputable contractor. I like waterproofing on top of the mortar bed, it helps keep mold down. Good for 50 years and warrantied for 10 years.
“Do you follow TCNA standards?” (If they don’t know what that means, that’s your red flag.)
Lastly, trust your gut. If you think something is off, it probably is. Always better to stop the job or wait and save if you cant afford the guy you trust. It is far more expensive to do it twice than to just do it right in the first place.
I post this kind of stuff because I’d rather see homeowners avoid problems before they start.
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