Fix Your Cast Iron Toilet Flange When It’s Too High

When renovating my bathroom interior last summer I found myself cursing my stupid decision of trying to remodel the toilet on my own. In the process of saving a few hundred bucks I ended up almost ruining my brand new toilet design. Due to my miscalculation and hasty installment I made a major mistake.

After hours of effort I was left with a cast iron toilet flange too high. If you have faced this issue you will no very well how it makes the toilet wobbly and uncomfortable. Not to mention, how much of an eye sore it can be. Fortunately, I found just the right method to fix this problem.

And today for my fellow DIY enthusiasts, I will explain this quick fix (and everything else you need to know), in this article.

What Happens If Toilet Flange Is Too High?

A flange that sticks out of your bathroom floor can cause more problems than you might be aware of. It can cause leaks that end up flooding your floor, which can lead to several other safety hazards. Apart from that, the toilet seat might also be too wobbly for your comfort. It’s time to get rid of this instability.

How to Fix a Cast Iron Flange That’s Too High?

It’s usually recommended to rely on a professional for a task like this. But if you are a skilled DIY enthusiast, then you should keep these detailed instructions in mind.

  1. You need a hammer for this first step. Start by hammering the flange down until it reaches ground level. Pick a block that is 2×4 in size and place it against the wall of the pipe. Gently tap using the hammer around the pipe. Apply a significant amount of force when the block reaches the flange.
  2. Only tap on the inside part of the flange without touching the rest of it. Make sure you don’t tap the outside part.
  3. Cast iron is too brittle and can break under force, so try not to tap too hard around the outside slots.
  4. Keep on tapping gradually and make your way towards the flange with the hammer. Make sure to do so until the flange is even with the floor.
  5. You might notice the lead seal on the flange loosening once you are done hammering. Recaulk the joints from both inside and out with the help of caulking irons. This will create a secure seal.
  6. Nibble down the exposed iron pipe with the help of a crescent wrench
  7. In case the lead joint turns out to be too tight, you might need to take down the pipe one piece at a time
  8. If none of these steps work, then your only option is to cut the flange with an angle grinder.

Final Words

If you have carefully read the entire article, then I’m glad to let you know you won’t make the same mistakes I did. The sole purpose of this article was to help those of you who have a cast iron toilet flange too high. Please make sure you take all necessary precautions to avoid the safety hazards.

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