Concrete is a common pergola base, but not every patio slab is designed to resist structural post loads and wind uplift.
Start with the constraint
The anchor system depends on slab thickness, concrete strength, distance from edges, post loads, and manufacturer engineering. Existing decorative slabs may not equal structural footings.
What changes the decision
Cracked, thin, sloped, or poorly reinforced concrete can complicate installation even when the pergola frame itself is engineered for high wind.
What to verify before buying
Use the manufacturer-approved anchor pattern and verify the existing slab can support it. Do not improvise anchors based only on post-base hole size.
How we research pergolas
We prioritize material specification, roof system, published wind and snow engineering, span, drainage, anchoring, installation requirements, warranty, accessory ecosystem, and total configured cost. Local building codes and site-specific engineering take priority over general product claims.
Prices, specifications, firmware, and configuration-driven features can change. Check the current manufacturer page and local requirements before buying or installing equipment.