References
Sources Library
The research, government data, and industry references behind our roofing calculators and reports.
Government Sources
Federal and state agency data used to anchor cost and labor benchmarks.
U.S. Bureau of Labor Statistics (BLS)
Construction wage and employment data.
U.S. Census Bureau
Housing stock, construction permits, and homeowner demographics.
FEMA
Building science and storm damage assessments.
NOAA Storm Events Database
Hail, wind, and tornado event records.
Industry Sources
Roofing industry associations and manufacturer data.
National Roofing Contractors Association (NRCA)
Industry trends, technical guidance, and standards.
Manufacturer wholesale pricing sheets
Asphalt, metal, and tile material cost data.
Cost vs Value remodeling studies
Resale value and ROI by project type.
Insurance Sources
Claim, payout, and coverage references.
Insurance Information Institute (III)
Property claim statistics and trend reporting.
State Departments of Insurance
Carrier filings, complaint records, and policy guidance.
Financial Sources
Consumer credit and lending references.
Federal Reserve consumer credit data
Loan balances, APRs, and credit trends.
Lender disclosure filings
Published APR ranges and product terms.
Research Sources
Independent research, surveys, and academic studies.
Contractor pricing surveys
Anonymous contractor input on project pricing.
Homeowner project surveys
Self-reported project costs and timelines.
Academic building science studies
Durability, lifespan, and material performance research.