Before buying: measure the real slab/deck, verify permit and wind/snow requirements locally, and confirm current model specifications with the manufacturer. PergolaSpec has not physically tested every product listed.
Important: “wind resistant” is not a universal certification. The exact model, configuration, foundation, installation and local design criteria must all match.
Start with an exact-model evidence pack
Before comparing finishes or accessories, request current documents for the exact size and roof configuration. A family-level marketing claim is not enough for a permit or a high-exposure site.
| Evidence | Question to resolve |
|---|---|
| Published wind criterion | Is it an operating limit, tested condition or structural design value? |
| Configuration scope | Does it cover this width, projection, height, louvers and accessories? |
| Foundation detail | What concrete, footing, anchor and edge-distance assumptions apply? |
| Louver procedure | Must blades be open, closed or placed in a specific position during high wind? |
| Stamped documents | Can the seller provide documents accepted by the local jurisdiction? |
| Installer responsibility | Who verifies slab, footing, anchoring torque and final inspection? |
Site exposure changes the shortlist
Open terrain, coastal exposure, elevation, nearby buildings and attachment to the house can change the design case. Do not translate a miles-per-hour number from one test or jurisdiction directly to another site.
Red flags before checkout
- A wind claim with no exact model, configuration or installation assumptions.
- Anchors supplied without a documented foundation requirement.
- Motorized louvers with no high-wind operating or power-failure procedure.
- An attached kit with no ledger, flashing or load-path documentation.
- A seller who cannot identify which document your permit reviewer should use.
Use a two-stage buying gate
- Run the size planner and note exposure, clearances and layout.
- Send the brief to shortlisted sellers and require written exact-model answers before paying.