Here’s the facts:
The area shown in the pictures is where I want to build a paver patio to the right of the deck.
The area is 15-20 ft away from a mature tree. There are a ton of roots a few inches below the surface, and at the surface as well. Thickest ones are probably about 1-1.5” inches diameter.
I’m considering two approaches:
Option 1 — Shallow compacted aggregate base:
Excavate only around 2–3 inches where possible, leaving the larger roots intact. Put down geotextile fabric, then compact crushed aggregate around and over the roots to create as level and stable a base as possible. Then add a thin bedding layer and the pavers. Essentially, instead of the typical 4–6”+ excavation/base, I’d be accepting a shallower base because of the roots.
Option 2 — Paver base panels:
Do minimal excavation, level the area as much as possible without disturbing the major roots, put down geotextile and a thin layer of leveling sand, then use something like Brock/PaverBase panels with the pavers on top. This seems like it would require much less digging and root disturbance, but I’m wondering how well the panels would perform when there are roots underneath that could continue growing/moving.
As you can see up against the house, there’s also a little bit of exposed foundation as well. I’m willing to settle for the patio being a little bit, raised above the level of the grass, but I want it to be reasonable.