Why is my toilet leaking from underneath?

Why is my toilet leaking from underneath?

One reason the toilet could be leaking at the base is that the t-bolts, which fasten the toilet to the floor, need to be tightened. … Clean away the remains of the previous wax ring and place the new one on the bottom of the toilet. Then reset the toilet, tighten the t-bolts and replace the caps.

How do you fix a toilet that is leaking from the bottom?

If water is leaking from beneath the toilet, you might be able to stop it by simply tightening the closet bolts that secure the toilet to the floor. Use a putty knife or slotted screwdriver to pry off the caps that are covering the bolts. Then use a wrench to alternately tighten each bolt, a little at a time.

Can a loose toilet cause a leak?

A loose toilet can cause a leak at the sewer line, and worse, flood the bathroom floor. It can lead to rotted wood and mildew and mold problems. If neglected, the leak can destroy the floor, leading to costly repair and replacement. … When the bolts become loose, the toilet can rock back and forth.