How to Securely Install a Toilet to a Floor

As a real estate investor, I’ve had to replace many toilets. Normally, I do that while doing a complete renovation. The problem with many toilets is

  1. the bolts to the toilet flange in the floor can get loose
  2. the floor may not be perfectly level

These issues can cause a toilet to slide, rotate, and tilt.

Fixing a rocking toilet due to an uneven floor

After renovating many bathroom floors with both tile and vinyl, it’s unfortunate that despite a contractor’s best effort to create a perfectly level floor, a small imperfection could cause a toilet to not sit evenly on the floor. The easily way to fix this is by installing plastic toilet shims on the LOW side of the toilet. Make sure to install it on the LOW side as the weight of the toilet will help keep the shim in place.

Fixing a loose toilet due to loose bolts

The bolts that come with many toilets are usually the cheap kind. Sometimes, they work just fine, but depending on your toilet flange and toilet, they may easily become loose, which is what happened to me. To remedy this, I replaced the cheap toilet flange bolts with the Fluidmaster SetFast 5/16 in. x 2-1/4 in. No-Cut Brass Closet Toilet Bolt Kit. Price at $8, which is about double the cost of the cheap bolts, these bolts don’t require any cutting and they securely hold your toilet in place. Unlike some other toilet bolts that come with a small head, the bolt head the Fluidmaster bolt is thick and wide, so the bolt remains within the toilet flange slot no matter what.

When you tighten the acorn nut, the height of the threaded stud decreases automatically.

The yellow lock washer is thick, which holds the bolt in place vertically as you place the toilet over the bolts. This is way better other toilet bolt kits, which either don’t come with a lock washer, or the lock washers are thin and flimsy.