Categories: Bathroom

How to Change a Toilet | Ask This Old House

Ask This Old House plumbing and heating expert Richard Trethewey shows the basics of changing a toilet.
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Time: 1 hour

Cost: $30

Skill Level: Moderate

Tools List for Changing a Toilet:
Open ended adjustable wrench [https://amzn.to/2LIZ159]
Putty knife [https://amzn.to/2NR56zf]
Mini hacksaw [https://amzn.to/2NVsmfE]

Shopping List:
Bucket [https://amzn.to/2Lo4LCy]
Sponge [https://amzn.to/2N83O3o]
Drop cloth [https://amzn.to/2A99IbK] or plywood [https://amzn.to/2N8tzQT]
Gloves [https://amzn.to/2N8sDvM]
Closet bolts [https://amzn.to/2PYXYn0], closet nuts [https://amzn.to/318aMIS], and closet washers [https://amzn.to/2NPtUro]
Wax ring [https://amzn.to/2N8442m]
Toilet caps [https://amzn.to/2Q2oR9y]

Steps:
1. Shut the water off at the toilet. The shut off valve should be to the left of the toilet.
2. Flush the toilet to drain out as much water as possible. The rest can be removed with a sponge and a bucket.
3. Break the water connection from the hose to the toilet tank. It usually can be loosened with hands alone.
4. Use the open ended adjustable wrench to loosen the closet bolts on both sides of the toilet. Remove the nut and the washer.
5. Use the grips under the toilet to carefully lift the toilet straight up off the bolts. Place the toilet on a piece of plywood or drop cloth to protect the floor.
6. Wearing gloves, remove the wax around the flange using a putty knife.
7. Check to ensure the closet flange is intact. Replace if it is broken.
8. Insert new closet bolts into the flange. Buy ones with plastic tabs on them so they stay in place. It will make it easier to put the toilet back on.
9. Add a new wax ring to the flange.
10. Carefully put the toilet back on the flange and push to set into the wax ring.
11. Add the toilet cap base to the closet bolts on both sides.
12. Put the washer and nut back on the closet bolts. Secure them on both sides with the open-ended adjustable wrench. Take turns securing each side and do not overtighten to prevent damaging the toilet.
13. Use the mini hacksaw to carefully cut the closet bolts close to the nut.
14. Add the toilet cap to the closet bolt. It should snap right into the cap base.
15. Hand tighten the water connection back to the toilet.
16. Turn the water back on.

Resources:
Everything Richard used to remove and reinstall the toilet, including the sponge, bucket, wrench, and closet bolts, can be found at home centers and plumbing supply stores.

About Ask This Old House TV:
Homeowners have a virtual truckload of questions for us on smaller projects, and we’re ready to answer. Ask This Old House solves the steady stream of home improvement problems faced by our viewers—and we make house calls! Ask This Old House features some familiar faces from This Old House, including Kevin O’Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook.

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How to Change a Toilet | Ask This Old House
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View Comments

  • After you remove the toilet stuff a towel into the pipe opening to prevent gases from coming up and to prevent dropping a nut, washer, bolt ,etc. down the drain.

  • great explanation about the flange and nuts , other videos are rushing up this part.. Now i am ready to replace my slow flushing toilet!

  • Your videos is very helpful for me. My family planning to replace 2 toilet. Now it's seem we can do it by ourselves.
    Thank you so much!

  • Ok I just replaced a wax seal and that flange is a piece of crap that doesn't hold the "key" bolts in place worth a hoot and then the snap the bolts with the pliers trick caused one of the bolts to unseat and get all wonky on me soooo... am I gonna have to redo the job or is it just gonna be a bit wobbly

  • Use a wet vac to take out the water in the bowl and tank. It's fast and easy.

  • I thought those cone wax rings were meant to be stuck in the bottom of the toilet first and then you could just guide it right in

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