An strap toilet is one in which the outlet for waste passes through a pipe in the floor rather than a pipe in the wall which is called p-trap. These days p-trap toilets have become much more common, but there are still some older houses and even commercial buildings with strap toilets. Because of this, if you own an older home or business building, it can be important to know how to install an strap toilet, especially if you don't want to do some serious remodelling by adding a waste outlet pipe in the wall. This tutorial assumes you have already removed the old toilet if there was one, and cleaned up the area to ready it for the new toilet.
- Skill level:
- Moderately Challenging
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Things you need
- Toilet with strap
- Standard or adjustable wax ring
- Adjustable wrench
- John bolts with extra washer
- Small hacksaw
- Flexible water line
Check to see if the toilet flange is above the surface of the floor or below the surface of the floor. If it is above the surface of the floor then you can use a standard-sized wax ring and john bolts. However, if the flange is below the surface of the floor, then you will need an extended wax ring and longer bolts.
On each side, take one john bolt and slide it into the square slot and then move it over and centre it.
Line up the wax ring with the opening of the flange and then centre both the wax ring and the john bolts.
Take your toilet and line up the holes on each side with the john bolts. Once the john bolts are through the openings, then set the toilet down.
Press straight down and put even steady pressure on the toilet. This is to ensure that seal is tight and no water or sewer gases can escape.
Put the cap washer over the bolt and then the metal washer.
Thread the nut onto the bolt. Tighten it with your fingers first, then carefully with your adjustable wrench. You don't want it too tight because porcelain can crack if the john bolts are secured too tightly.
Take your small hacksaw and saw off the bolt just above the nut on each side of the toilet, otherwise your caps won't fit.
Put the new caps over the bolts and tap them hard enough so they stay on.
Take your flexible water line and hook it up to the fixture under the tank and then hook the other end to the water pipe coming from the wall.
Install the toilet seat according to the instructions that came with your toilet.
Turn the water back on and then give your toilet a few experimental flushes so you can check to be sure the seal is good and you don't have any leaks.
Once you are sure there are no leaks then caulk around the bottom of the toilet to help with sealing it.
Tips and warnings
- When tightening the john bolts, just rock the wrench a bit back and forth until the bolts seem tight. Remember you don't want them too tight or the porcelain will crack and all your hard work will be for nothing.
- When putting the toilet on top of the new wax ring, do not rock the toilet back and forth. This will make it so the seal is not strong and you could have sewer gases and water leaking from your toilet, both of which you don't want.
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