How To Install A Toilet Flange In New Construction?

Should toilet flange be on subfloor or finished floor?

The toilet flange needs to be on top of the finished floor. Meaning the bottom edge of the flange needs to be on the same plane as the toilet. So if your toilet sits on the tile, the flange needs to be on top of the tile too.

How do you install a toilet flange on a new concrete floor?

Instructions

  1. Cut off the Old Flange and Obstructions. After you remove the toilet, you will probably find an existing toilet flange.
  2. Scrape Off the Old Wax Ring.
  3. Place T-Bolts in the New Toilet Flange.
  4. Position the Toilet Flange.
  5. Drill Holes Into the Concrete.
  6. Screw the Toilet Flange Onto the Concrete.

Does toilet flange go inside or outside pipe?

This toilet flange is designed to glue on the inside of the pipe or expand inside the pipe. Leave the old toilet flange right in place and glue on the new one at the right elevation for the floor, if it’s plastic. The flange should be sitting with the bottom edge flush with the top of the floor.

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Where should a toilet flange sit on a finished floor?

With the toilet removed, you can see the toilet flange and measure its height above the floor. Optimum flange height to aim for is 1/4 inch above the finished floor. This typically allows for almost any type of wax ring to be used and still ensure a good seal.

Can toilet flange be lower than floor?

In a typical toilet installation, the floor flange that sits inside the drain opening below the toilet should be positioned so that its bottom surface rests flush against the finished floor, or no more than 1/4 inch above or below the floor.

Does a toilet flange need to be glued?

This toilet flange is designed to glue on the inside of the pipe or expand inside the pipe. The bottom of the flange needs to be sitting flush with (or not more than 1/8″ above) the finished floor or else the toilet will rock. The flange should be fastened to the floor. Dry fit the toilet to make sure it doesn’t rock.

How far off the wall should a toilet flange be?

The Distance To Set The Toilet Flange From The Back Wall. You’ll want to set the center of the water closet flange 12 inches from the finished back wall. Don’t measure from the base molding! Take this measurement from the finished wall.

Does a toilet flange need to be screwed to the floor?

The flange should be fastened to the floor. Dry fit the toilet to make sure it doesn’t rock. If it does rock, use shims to prevent rocking – just tightening the bolts probably will not stop the rocking but will risk cracking the toilet or breaking the flange. We would usually screw it down during the rough in.

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When should I replace toilet flange?

Do you have to replace the flange when you get a new toilet or can you just replace the wax ring? No, simply replace wax ring or seal (rubber gasket seals are becoming more popular). However if you notice damage to the floor, or flange, you may want to replace them depending on the severity of damage.

How do I know what size toilet flange I need?

One common standard toilet flange size is 4×3, and this is the measurement you will find beside most flanges available at your hardware or plumbing stores. The top side of the flange, which connects to the toilet, is 4 inches in diameter, while the bottom diameter of the pipe is 3 inches.

Can I use a 3 inch toilet flange?

The 3Inch Flanges



Many flanges are simply 3 inches in diameter, which means the top and bottom are each 3 inches wide. These flanges must install on a 3inch-diameter schedule 40 drain pipe or directly to a 3inch closet bend. When installing this type of flange, make sure your piping is sized properly.

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