Crown Thinning and Canopy Reduction
Crown Thinning And Canopy Reduction In L'Amoreaux, Toronto
The two aren't the same fix. Thinning removes some of the interior clutter without changing the tree's overall size; reduction actually pulls the crown inward, which tends to be the better call on a tight townhouse lot where a tree has simply outgrown the gap to the building next door.
Thinning takes out smaller branches from inside the canopy so more light and air get through, while the tree keeps roughly the same silhouette. Reduction cuts back the outer edges so the whole crown ends up smaller and occupies less space overall.
Done gradually over more than one visit, with cuts placed carefully, it's low-risk - the tree keeps enough live canopy to stay healthy. Rushed into one aggressive pass, that's when you start seeing stress and a flush of weak regrowth, especially on a tree already dealing with compacted soil.
No - topping cuts through a branch at an arbitrary point with no regard for what's left; reduction cuts back to a lateral branch capable of taking over growth on its own, which keeps the tree structurally sound instead of triggering a mess of weak shoots.
Usually, yes - reducing just the side that's pushing over the line is often enough to solve it, without turning a boundary issue into a reason to remove the whole tree.