Once roots have entered the pipe, they continue to grow and expand, exerting considerable pressure at the crack or joint. This increased pressure can cause the pipe to break or collapse, in which case it will need to be repaired or completely replaced.
If left undisturbed, roots will completely fill the pipe with hair-like root masses. The root masses quickly become clogged with toilet tissue, grease and other debris flowing from your home to the main sewer. A complete blockage may occur if the roots are not removed and enough waste material accumulates.
If roots have entered your pipes, contact a qualified plumber to remove the roots without tearing up your yard. They may also be able to can apply a compound which prevents future root growth. This compound will kill only the roots growing in the pipes and will not affect the rest of your tree’s root system.