{
  "rows": [
    {
      "fact_id": "usda-exterior-paint-10-20",
      "type": "Exterior wood paint",
      "measure": "expected service life; primer plus two topcoats",
      "value": "10",
      "value_high": "20",
      "unit": "years",
      "area": "Contiguous USA; exterior wood",
      "data_years": "Observation years not stated; handbook 2021",
      "source": "USDA Wood Handbook (2021)",
      "url": "https://research.fs.usda.gov/download/treesearch/62269.pdf",
      "read": "2026-11-02",
      "n": "not published by the source",
      "se_points": ""
    },
    {
      "fact_id": "usda-paint-cedar-vertical",
      "type": "Cedar and redwood, smooth vertical grain",
      "measure": "expected service life; primer plus two topcoats",
      "value": "10",
      "value_high": "15",
      "unit": "years",
      "area": "Contiguous USA; exterior wood",
      "data_years": "Observation years not stated; handbook 2021",
      "source": "USDA Wood Handbook (2021)",
      "url": "https://research.fs.usda.gov/download/treesearch/62269.pdf",
      "read": "2026-11-02",
      "n": "not published by the source",
      "se_points": ""
    },
    {
      "fact_id": "usda-paint-cedar-flat",
      "type": "Cedar and redwood, smooth flat grain",
      "measure": "expected service life; primer plus two topcoats",
      "value": "8",
      "value_high": "12",
      "unit": "years",
      "area": "Contiguous USA; exterior wood",
      "data_years": "Observation years not stated; handbook 2021",
      "source": "USDA Wood Handbook (2021)",
      "url": "https://research.fs.usda.gov/download/treesearch/62269.pdf",
      "read": "2026-11-02",
      "n": "not published by the source",
      "se_points": ""
    },
    {
      "fact_id": "usda-paint-cedar-sawn",
      "type": "Cedar and redwood, saw-textured",
      "measure": "expected service life; primer plus two topcoats",
      "value": "15",
      "value_high": "20",
      "unit": "years",
      "area": "Contiguous USA; exterior wood",
      "data_years": "Observation years not stated; handbook 2021",
      "source": "USDA Wood Handbook (2021)",
      "url": "https://research.fs.usda.gov/download/treesearch/62269.pdf",
      "read": "2026-11-02",
      "n": "not published by the source",
      "se_points": ""
    },
    {
      "fact_id": "usda-paint-pine-smooth",
      "type": "Pine, fir, spruce, smooth flat grain",
      "measure": "expected service life; primer plus two topcoats",
      "value": "6",
      "value_high": "10",
      "unit": "years",
      "area": "Contiguous USA; exterior wood",
      "data_years": "Observation years not stated; handbook 2021",
      "source": "USDA Wood Handbook (2021)",
      "url": "https://research.fs.usda.gov/download/treesearch/62269.pdf",
      "read": "2026-11-02",
      "n": "not published by the source",
      "se_points": ""
    },
    {
      "fact_id": "usda-paint-pine-sawn",
      "type": "Pine, fir, spruce, saw-textured flat grain",
      "measure": "expected service life; primer plus two topcoats",
      "value": "8",
      "value_high": "12",
      "unit": "years",
      "area": "Contiguous USA; exterior wood",
      "data_years": "Observation years not stated; handbook 2021",
      "source": "USDA Wood Handbook (2021)",
      "url": "https://research.fs.usda.gov/download/treesearch/62269.pdf",
      "read": "2026-11-02",
      "n": "not published by the source",
      "se_points": ""
    }
  ]
}