Learn how to repair a rotten wooden sub-flooring under a toilet.

Video Transcription

WOODEN SUB-FLOORING REPAIR TOILET – PART 2 OF 3 The tools needed for this repair are the electric driller screw driver used to screw the flange of the sub-flooring and a wire brush use to clean your flange in any a rust. To do this repair clean the old flange of any rust and visible corrosion, place the repair ring over the top of the old flange with the mountain channels lined up, screw the repair ring to the sub-flooring using deck screws, ensure that it is secured properly to the sub-point. Once it is done, the wax ring to be placed and the toilet can be remounted. If desired, a new flange could be installed over an existing flange, but to do this the new flange will have to be an inside fitting flange, and the old flange’s metal ring will have to be removed. The removal of the metal will be covered later on this section. If the flange and sub-flooring need to be replaced then the flange will need to be remove without breaking the sewer inlet and the sub-flooring will need to be cut out without damaging the floor joist In order to perform this repair the following items only to be purchased, the first is the new toilet flange, the toilet flange can be served of different styles depending on the sewer inlet is under three or four inches in diameter. Since the sewer inlet is used to drain line under no pressure most connections will work as long as they are cord together tightly. The rest of the items needed to make this repair are small container of ABS glue to glue the flange and sewer inlet together, a piece of three quarter inch plywood, large enough to replaced the damage sub-flooring, and eight foot 2x4 used to reinforce the sub-flooring, some of 1-½ decks screws, a wax ring and toilet mounting bolts. The tools needed for this repair are a circular saw, an electric drill, a hammer, a screwdriver, a mini hacksaw, a carpenter’s square straight edge, and a tape measure. The flange or parts of the flange will need to be removed from the sewer inlet. For demonstration purposes the removal of both an outside and an inside flange will be shown. For an outside fitting flange take them in a hacksaw and cut completely through the flange’s metal ring. Next unscrew the deck screws holding the flange to the sub-flooring. Now, take up the head screw driver and wedge it between the ABS coupling and the metal ring prying up the metal ring. Use them any hacksaw to cut the ABS coupling all the way to the sewer inlet, once the cut is made wedge the screw driver between the ABS con the sore inlet breaking the ABS screw seal. With some work, the coupling should be able to be removed.