To remove roots from trees that grow in underground pipes or under concrete, use a foaming herbicide and polyethylene root barrier panels. Foaming Root Killer goes to the toilet on the first floor to clean the pipes and make the roots brittle. Then, use root barrier panels by cutting out intrusive roots and placing panels to block growth into the concrete. If you leave out some tiny weed roots when you're preparing the soil, it's probably not a problem.
If you see the roots and can easily tear them out of the ground, do it. However, it is not necessary to dig a hole one foot deep in the spill area to obtain the last piece of dandelion root (Taraxacum officinale). However, the roots of trees and shrubs should definitely be removed. Cut the roots of trees that stick out of the ground with an ax or saw.
Leaving the roots will weaken the concrete slab and, if the root continues to grow, it is likely to crack or break through the slab. Pruning roots to prevent sidewalks from bending is generally not a good option. Trees need their roots as support and, if removed, the tree may be prone to falling in the wind, warns the University of Florida Extension. If you remove roots that are less than 2 inches in diameter, they may simply grow back.
If you prune too many roots, the tree may lose branches or die. The big, beautiful trees that line the streets of Portland help make the city what it is today. However, the roots of these trees often break the sidewalks above the root systems. As tree trunks expand and roots get stronger, concrete slabs on sidewalks can crack and lift up, causing pedestrians to trip and get dirty.
However, if it was caused by the invasion of tree roots, that's a problem that will only worsen as trees grow and take root more. This includes removing rocks and organic matter, such as leaves, grass, twigs, plants and tree roots, from the landfill area. But in terms of the soil, you can hammer it with a pneumatic hammer into just one section and cut it down; of course, remove all the roots of the trees under the concrete floor. There are limits to how much you can prune the root of a tree to repair a sidewalk without destroying the tree.
Cutting the main roots that are anchoring a tree can cause the tree to be easily damaged by strong winds and bad weather. Care must be taken to remove concrete from tree roots, although the damage may have already been done. Ideally, if you have large trees that you would like to keep safe and healthy, you should first call an arborist to tell you the best place to place a concrete structure without damaging tree roots. The roots under the walkway were not removed because the tree removal contractor said they couldn't get under the walkway, which was obvious because of the huge machine they used to grind stumps and chase down roots.