How to fix squeaky floors under tile?

I have some very bad news for you and possibly some good if you have a basement under the room with the squeaks. Squeaky floors are caused by the subfloor pulling away from the joists. http://homeguides.sfgate.com/reduce-floor-squeaks-tile-floors-35470.html has all the dope for fixing this problem.

Sorry, but the tile has to come up to fix the sub floor. If you do not do this, the tiles will eventually fail too.

Yes your tiles may eventually crack. Better to fix before things get worse or see if there is a local specialist who may be able to fix from under the floor. Personally I would leave it and just leave it as a quirk of the house.

If all you want to do for the present is to fix the squeak, and if you can get underneath the subfloor from below here's the fix....Drill a series of small holes in the ceiling below the subfloor and using an Dollar Store mustard bottle (or you can use a ketchup bottle if your taste goes there,, squirt baby powder up into the space hitting the subfloor above in as many places as you can....This should take care of the squeak....Then just repair the small holes with spackling compound.

Try sprinkling talcum powder on the floor and sweeping it back and forth with a broom so it can get in the creases. If you can access the floor under the laundry room from a bottom floor, it would be even better: http://www.popularmechanics.com/home/interior-projects/how-to/g1546/7-ways-to-silence-your-squeaky-floor/  ; (hit the box that says View Gallery) Good luck!

Hello. If you are able, you can tap wood shims between the floor joist and the sub floor. That should take that squeak right away. Hope this helps you. Good luck.

This is what I use: SqueakyFloors.com

For Under the Floor Repairs

Squeak-Relief was designed for all flooring types where there is access to the subfloor either via a basement or crawl space. Takes only seconds to install and is affordably priced

I am so sorry to tell you this...but the best thing to do is to tear it up & start over..there is really no remedy this problem.

You will need to fix it from the underside then, which could mean going through the ceiling of the room underneath!

Talc may help the squeak, or not, you could try it and see if it helps. What is under the tiles? Your best solution is tke up the tiles and see what is going on and fix it at that level.

Try to do it from underneath the floor, if not you might have to live with it!

If you have an exposed ceiling underneath the tiles you can sometimes correct it from there, by supporting the areas that are squeaking. Other than that, there's really no way to correct the squeak since it's coming from the wood support under the tile.

Why do I feel like climbing under the house (or in your basement or however you access your joists), use a simple pocket hole jig to add pocket holes to the joists, squirt adhesive between the joists and subfloor, and then use pocket hole screws to suck the subfloor back down to the joists. You could add as many as you like "to be sure". Shims seem like they would work, but if the tile is already down, and depending upon how much/high you need to shim, I don't know if those shims would raise the level of the floor enough to create a high spot and a potential failure point for tile/mortar/(assuming hardibacker) monolith.

It may also be that I just love pocket screws and glue.

The only other way would to be to do it underneath the floor!

To fix this, you'll need to re-secure the tiles to the subfloor. You can do this by injecting adhesive under the tiles and pressing them back down onto the subfloor. This should help to eliminate any movement and stop the squeaking.