Use tapcon anchors or a similar type of masonry concrete screws to fasten the toilet flange to the concrete slab.
How to install a toilet on a cement floor.
However even a.
Remove the toilet and turn it on its side.
Few toilets are installed on a floor so unlevel that you have a good chance of falling off the side before you finish your business.
Screw the toilet flange onto the concrete.
There must be a 3 inch diameter drainage pipe rising up from the concrete as well as a water supply pipe coming from an adjacent wall.
If using a plastic flange ring be careful not to crack the ring by screwing the anchors in too far.
However installing the flange on a tile floor is different.
The first thing that needs to be done when installing a toilet on concrete is to make sure that the place you intend to install the toilet has the necessary pipes.
Then lift the toilet onto the floor bolts and jiggle it a bit to seal the drainage hole.
With the toilet flange in place you are ready to install the toilet with a new wax ring.
First set the toilet in place without the wax ring and square it up to the wall.
Then make an outline of the toilet on the floor with masking tape.
Lastly place the wax ring on the flange so that you can later install the toilet on the flange.
Rising from the concrete should be a 3 inch diameter drainage pipe and along the adjacent wall there should be a water supply pipe.
How to install a toilet on an unlevel floor.
To know about toilet flange installation on tile read the following section.
Measure the depth and width of the gluing edge of the bowl.
Smooth out the concrete floor.
How to mount a toilet to a concrete floor 1.
Fit a new seal around the drain hole in the floor and make sure it s tight.