Methodology

1. Topic selection — Search-intent driven from Porto owner questions; reviewed weekly.
2. Source collection — Tier 1 (ScienceDirect, WHO, Portuguese law) plus Tier 2 trade technical guides (Permagard, Rawlins, proPERLA).
3. First draft — Written by Mateo García with a named source for every numeric claim.
4. Editorial review — Femi Musa checks accuracy, tone, and CTA placement.
5. Update cadence — Guides re-reviewed every 6 months; flagged immediately on regulatory or pricing shifts.

We use AI assistance for research aggregation and proofreading. A human editor approves every published guide.

Authority sources are documented in our repository under docs/authority-sources.md.