A toilet tank bolt leak is a pretty easy problem to fix if you know what to do. However, if you’re a homeowner who’s fairly unskilled, then you’ll want to take advantage of the information below. By fixing the problem yourself, you’ll dodge an expensive service bill.

A toilet that leaks from its tank bolts is usually leaking because of damaged, misaligned or even cracked washers or bolts. Generally, two-piece toilets have a set of bolts that attach the tank to the bowl. These bolts travel through a hole at the bottom of the tank and then run through matching holes located in the bowl.

With most models, rubber washers sit between the bolt head and the inside of the tank. Washers or spacers also sit between the tank and the bowl, and a washer made out of a metal, rubber or plastic is placed on the bolt between the bowl and the nut. This secures the tank into place and prevents it from moving.

To stop the leaking, these bolts or washers will more than likely will need to be replaced. Start by locating the water supply valve, turn it completely off and then flush your toilet just one time. Once your water has been turned off, follow the steps below:

  1.  Remove all the necessary bolts, washers and nuts from both the inside of the tank and below the bowl.
  2. Replace any faulty spacers, bolts and washers between the tank and the bowl.
  3. Now take the tank and gently place it onto the bowl.
  4. Make sure the holes are aligned.
  5. Slip a bolt with a washer into each of the aligned holes.
  6. Continue to hold the tank in the right position and put a washer on the bolt and under the bowl.
  7. Tighten the nut. When you tighten the nut, start by tightening it with your hand, and then gently tighten it more with a tool. It’s essential to be careful, so you don’t crack the porcelain.
  8. Turn back on your water and give your toilet a test flush.
  9. Check for leaks.

Take advantage of these tips when your toilet tank bolts leak and cause you a problem. In the end, by doing the job yourself, you’ll keep more cash in your wallet while giving yourself a sense of accomplishment.

Kevin L. Sharp

1 Comment

  1. Very helpful Mr. Sharp. I love sites like yours as I’m definitely a do DIY’er whenever possible ! Ty.

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