While no one wants to deal with redoing their entire bathroom out of obligation, there are many questions people have about their cracked toilets. Is the crack dangerous, or merely cosmetic? Does it matter where the crack is? What kinds of cracks can be repaired? If it can’t be repaired, should I replace the entire toilet? A cracked toilet can pose a variety of problems for homeowners, the biggest being the potential for a major blow out and extensive water damage. In this guide, we’ll tackle all those important questions, and provide you with instructions on how to identify your cracked toilet problem, as well as give detailed instructions on how to repair your hairline cracks with epoxy. Take a good look at the cracks in your toilet. Is it a tiny hairline crack on the outside? Are there multiple hairline cracks? Are there any cracks on the inside of the bowl or the tank? If you are seeing hairline cracks that may appear to be only cosmetic, we will show you how to patch and repair them using plumbing epoxy.
Prepare the Supplies for this project.
Silicone Plumbing Epoxy – This waterproof epoxy will seal and patch up tiny cracks on your toilet.
Caulking Gun – Use this to apply epoxy to your cracks.
Sponges, Towels and Cloths – Use these to completely dry out the entire toilet before you begin the application of your epoxy.
Adjustable Crescent Wrench – Not only will this make you feel like an awesome professional plumber, but you’ll be using this kind of wrench to disconnect the toilet’s water supply as well.
Let’s get started!
Identify the Problem. Hairline cracks around the outside of the toilet are often cosmetic, and can be repaired with the application of plumbing epoxy to seal them. Cracks on the inside of the bowl are cause for alarm, and may result in needing to replace the entire toilet. Being able to identify the location, size and type of crack on the various parts of your toilet will save you time and money in deciding on a proper solution to your problem. As an example, if a crack has occurred on the inside of your tank, and is over 1/16 inch wide, you should most likely replace your tank.
So Long Water Supply. First thing’s first, let’s disconnect the water supply heading into the tank before you drain your toilet. You can turn off the water supply at the shutoff valve located beside and behind the toilet. Once it is turned off, flush the toilet to drain it. Now we can grab our handy adjustable crescent wrench to disconnect the water supply line from the tank.
Dry Toilet Humor . Now that your toilet is disconnected from its water supply and thoroughly drained, use those towels, sponges and cloths to dry out every part of the toilet. Use the towels and sponges to absorb excess water in the tank, and wipe down everything inside and outside to remove any condensation or water droplets that remain. Why, you ask? That miracle epoxy needs a totally dry environment in order to adhere to the toilet’s materials and seal that crack properly.
Patch Hairline Cracks with Epoxy. After you’ve identified the type of crack in need of repair, determine whether it’s worth fixing with epoxy or if you’ll need to replace the entire toilet. When you experience cracks on the inside of your tank over 1/16 inch wide, you should most likely replace your tank. Hairline cracks around the outside of the toilet are often shallow, and can be repaired by applying plumbing epoxy to seal them.
NOTE: When removing the toilet tank’s lid, cautiously use both hands as the lid is very heavy and susceptible to breaking if dropped. Carefully lift it off of the tank and place it onto a folded towel or another type of padding.
A great way to ensure you’ve completely dried out the tank area on your toilet is to use an electric hair dryer on the highest heat setting. Take your time and move all around the bottom and sides of the tank until its bone dry and ready for epoxy!