It can be lower but it can t be higher or else the flange wil be lifted off the floor.
How to attache toilet flange to concrete floor.
With the toilet flange in place you are ready to install the toilet with a new wax ring.
Flanges are made of either plastic brass stainless steel or cast iron.
The new bolts will secure the flange against the bottom of the toilet.
Place the toilet flange face down on the concrete.
Then place the flange over the stub out and turn it until the slots for the bolts that secure the toilet are by the flange s side in relation to the wall that is behind the toilet.
Screw the toilet flange onto the concrete.
If using a plastic flange ring be careful not to crack the ring by screwing the anchors in too far.
Make sure that there are no spaces between the flange and the floor before screwing it into place.
You will notice the bolts.
How to install closet flange to cement floor.
Screw down the flange with a masonry drill and then fit the heads of locking bolts into the grooves on the flange.
The flange should be placed over the pipe so it lays flat against the concrete floor.
Use tapcon anchors or a similar type of masonry concrete screws to fasten the toilet flange to the concrete slab.
Use 1 4 tapcon screws and a tapcon pilot bit.
A 3 8 cordless drill will be sufficient and there is no anchor to insert you simply drill the pilot hole then screw the screw right into the concrete.
Once the drainage pipe has been prepared a floor flange must be installed.
The toilet flange is a pipe fitting that both connects the outflow pipe to the toilet and the toilet to the floor.
Screw the new flange to the floor using a screwdriver and the new screws that came in the product package.
Fix the toilet flange on concrete floor.
Hj az use an outside one so you do not have to decide where to cut the pipe before you install the flange and on concrete screwing the flange down is an option not a necessity.
Attach using your used or new screws and bolts.
If the pipe is cast and is sticking up 1 2 inch you can cut snap it off in increments by sawzalling vertical slices down to the floor every 1 2 inch about around the pipe then use pliers to snap off each tooth you make.
Depending ion the age of the concrete and the aggregate used for fill you may need a hammer drill even with tapcons.
The bolts should now be sticking up so the toilet can be placed over them.