We usually shred four to six inches below ground (ground level). If deeper grinding is needed, it can be ordered, although the price of stump grinding may increase. However, the depth to which a stump can be ground is subject to some limitations. While tree stump milling experts generally grind stumps 4 to 6 inches below ground level, stump grinders can go deeper.
Some can grind stumps up to 13-20 inches below the ground surface. And others, such as vertical stump grinders, can reach a depth of up to 62.5 below ground level. Standard regulations state that only a stump 200 to 300 mm can be ground below the level of the surrounding ground. This has as much to do with the size of the equipment and the blade of the shredder as it does with the stump itself.
Larger stumps take longer and cost more, as more time and labor are required to grind the stump. The blade is so large, so it is necessary to remove small pieces, for the safety of the operator and maintenance of the equipment. When you have a tree removed, a professional tree removal company will suggest that you grind your stump if conditions around the base of the stump allow it. Should I opt for stump shredding? How long will it take? What are the benefits of removing a stump? Is it a DIY job you can do yourself? You need a professional; someone who knows how far to dig and how to grind to get that stump out easily, and who saves you money and precious time in the process.
And you can also decide to simply ask the tree service company that is shredding your stump to get rid of them. This is the ideal grinding depth because it offers a perfect balance between grinding costs and efficiency. Some tree stumps definitely widen or are wider below ground, but it is very rare that a tree stump is too deep to be completely removed. Stump grinders that are available for rent by homeowners will be smaller and less powerful than those used by professionals and you are unlikely to find a range of stump grinder models to choose from.
But most tree service providers rarely have to use the full depth of a stump grinder because tree stumps don't usually extend as deep below the surface. There are some things that can prevent stump grinders from reducing their maximum depth, so we'll mention some of the most common ones. Professional arborists and tree removal companies also have insurance against accidental property damage from tree removal and stump grinding. Therefore, the depth to which you can grind your tree stump will also be limited by the type of grinder you are using.
When stumps are against retaining walls, fences or buildings, it is very difficult to get the machine close enough to completely crush it. Most professional stump shredding companies will have several methods of locating the depth of pipes or cables to ensure that no danger or damage is caused.