Cut support lumber usually 2x6s or 2x8s to fit between the existing floor joists on each side of the hole and install them with long screws leaving half the width of the support lumber under the existing floor.
Rotten floor around toilet flange.
Then install the new sub floor and glue on your new flange.
Sometimes the subfloor around your toilet will become soft and may begin to rot.
Insert the blade of the pvc saw into one of the holes then cut around the interior circumference.
You may need to cut it into more than 2 pieces to get it off.
If you can t turn them cut the bolts just below the nuts with a hacksaw.
How to fix a rotten floor around the toilet 1.
Flush the toilet to empty the tank.
Then use a hammer to drive a flat head screw driver in between the 2 pieces of abs flange and pipe.
Remove the spongy flooring.
Drill several large holes around the circumference of the toilet flange.
The second is that it holds the toilet to the floor securely.
Soak up the last of the water inside the tank with a sponge wringing it out into.
Toilet flange is a pipe fitting that basically has two functions.
The first is that it connects the floor drain to the drain of your toilet.
Now is a good time to inspect the soil pipe and toilet flange for damage or wear.
If only the area directly below the flange is rotted you can install a two piece steel closet flange support.
Inspect to see if you can reuse it or if you need a new one.
Replace them if necessary.
This could be because of leaks or overflows.
Remove the flange from the drain.
Flange support if you discover minor rot around the toilet flange install a closet flange support under the flange to transfer the weight of the toilet to solid wood.
Remove the two hold down bolts one on either.
Lift the toilet off the remaining bolts and place on a tarp upside down.
Unscrew the flange bolts.