How to install a toilet

Answers to How to install a toilet

If one of your toilets has seen better days or you simply want to update it with a model that is more stylish and efficient - you'll be glad to know that replacing a toilet is an afternoon project. However, if you plan to install a toilet in a new location, you will have to extend supply pipes and drainpipes to the desired spot, a job you may want to leave to a plumbing contractor.

When shopping for a toilet, you'll find many choices. The two-piece type illustrated here is the most common.

Though most toilets are sold with the necessary gaskets, washers, and hardware for fitting the tank to the bowl, you might need to buy a few parts. These may include hold-down bolts, a wax gasket for sealing the drain, and a flexible water- supply tube for connecting the tank to the shutoff valve.

Before beginning installation, turn off the water at the shutoff valve or at the house's shutoff valve. Flush the toilet to empty the bowl and tank, and sponge out any remaining water. Disconnect the water-supply tube from the shutoff valve, drain the water from the tube into a bucket, then unscrew the coupling nut on the supply tube at the bottom of the tank.

If the hold-down bolts that fasten the toilet to the floor are corroded to the extent that you can't remove the nuts, soak the bolts with penetrating oil or cut them off with a hacksaw. When you bolt the new bowl to the floor, be very careful not to overtighten the nuts as this can crack the porcelain.

1. To remove the old tank, unbolt it from the bowl, using a screwdriver to hold the mounting bolt from inside the tank while unfastening its nut with a wrench from below. Remove the bowl by prying the caps off the hold-down bolts and removing the nuts with an adjustable wrench. Gently rock the bowl from side to side to break the seal between the bowl and the floor, then lift the bowl up, tilting it forward slightly to avoid spilling any remaining water.

2. Stuff a rag into the drainpipe to prevent sewer gas from escaping into your home. Using an old putty knife, scrape the wax gasket remains from the floor flange. (If the old hold-down bolts and/or the floor flange are damaged, replace them, too.)

3. Turn the new bowl upside-down on a cushioned surface. Place a new wax gasket over the horn on the bottom of the bowl, facing the tapered side away from the bowl, as shown. If the wax gasket has a plastic collar, install it so the collar is away from the bowl, first checking that the collar will fit into the floor flange. Apply a thin bead of caulk around the toilet base.

4. Remove the rag from the drainpipe. Gently lower the bowl into place atop the flange, using the bolts as guides. Press down firmly while gently twisting and rocking. Using a level, check that the bowl is straight; use plastic shims if necessary to make minor adjustments.

5. Hand-tighten the washers and nuts onto the bolts. Then alternately tighten them with a wrench until the toilet is seated firmly on the floor. Snug up the hold-down nuts, but don't overtighten--this can crack the bowl. Fill the caps with plumber's putty and place them over the bolt ends.

6. If necessary, assemble the flush valve inside the tank and tighten the large spud nut at the center. Place the rubber tank cushion on the bowl. Position the tank over the bowl and tighten the nuts and washers onto the mounting bolts. Hook up the supply tubes and open the shutoff valve.

Most Common Mistakes
1. Violating or ignoring local code restrictions.
2. Using pipes that are too small.
3. Attaching copper to galvanized without using a brass or dielectric fitting between the two.
4. Not using PTFE tape or pipe compound at threaded joints.
5. Not leveling your fixtures when installing them.
6. Not installing an air gap filling for fixtures.
7. Cutting supply stub outs too short to install the shutoff valves onto after the finished wall is in place, or
8. Not properly aligning tubing into fittings or stop valves. (Forcing the nut onto the compression ring at an angle when the tubing is at an angle will cause a leak.)
9. When turning the water back on in your home, always run the outside hose valve or flush your toilets to bleed dirt and air from the lines. This debris can cause problems in your sink faucets and other plumbing trim.

Disclaimer - Answers to the questions are researched using various sources and are meant to increase the knowledge of our visitors. We cannot gurantee the accuracy of answers to questions.

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