1. EncyclopediaFire & Smoke Damage

   Roof Replacement After a Fire

   Repair or replace, partial or full deck, and what happens at the boundary between charred and merely heat-affected wood — plus matching, the code upgrades a repair can trigger, and where the roof…

2. ReferenceState license

   Roofing License Requirements in California

   California requires a CSLB C-39 Roofing Contractor license for roofing work; the scope is "a roofing contractor installs products and repairs surfaces that seal, waterproof and weatherproof…

3. DOC
   DocumentNorth Carolina Building Code Council / 2018 NC Residential CodeCodes & Standards

   2018 North Carolina Residential Code — Chapter 9 Roof Assembly Excerpts

   Verbatim excerpts of the 2018 NCRC roofing provisions — R901.1 scope, R905.1.2 ice barriers, R908 roof replacement and related sections — as adopted with amendments from the 2015 IRC. The underlying…

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4. PDF
   DocumentConstruction and Building Materials 115 (Elsevier) — Cárdenes et al.Codes & Standards

   Roofing Slate Standards: A Critical Review

   A peer-reviewed comparison of the international standards governing roofing slate — ASTM C406, EN 12326, China's GB/T 18600 and India's IS 6250 — showing how the same slate can pass or fail depending…

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5. EncyclopediaBusiness & Operations

   How to Start a Roofing Company

   Licensing, insurance and bonding before the first job, what a roofing business plan actually needs to answer, how to land and survive the first ten jobs, and the cash-flow arithmetic that kills more…

6. EncyclopediaVentilation & Code

   Minimum Roof Pitch for Shingles

   The 2:12 floor and the 4:12 line, what low-slope underlayment application actually requires, and the real options below the threshold — rolled roofing, single-ply, metal, or reframing the roof.

7. Reference

   Roofing License Requirements by State

   Who licenses roofers, at what threshold, under which authority — all fifty states and DC.

8. ReferenceLicense above threshold

   Roofing License Requirements in Alabama

   Alabama licenses residential roofing at the state level through the Home Builders Licensure Board: a Residential Roofer License is required once the cost of the roofing job exceeds $2,500, which…

9. ReferenceState registration

   Roofing License Requirements in Alaska

   Alaska requires a state credential for roofing, but it is statutorily a certificate of registration rather than a trade license, and there is no dollar threshold — a person may not bid or work as a…

10. ReferenceState license

    Roofing License Requirements in Arizona

    Arizona licenses roofing at the state level through the Registrar of Contractors, under dedicated roofing classifications: R-42 for residential, C-42 for commercial, and CR-42 covering both.…

11. ReferenceState registration

    Roofing License Requirements in Arkansas

    Arkansas requires a state credential for residential roofing over $2,000, but it is explicitly a registration and not a license — the Board's own application states "A Residential Roofing Registrant…

12. ReferenceNo state license — local only

    Roofing License Requirements in Colorado

    Colorado does not license roofing contractors at the state level at all — there is no state roofing license, no general contractor license, and no home improvement contractor registration. The only…

13. ReferenceState registration

    Roofing License Requirements in Connecticut

    Connecticut requires registration, not licensure. Roofing is named explicitly in the Home Improvement Act's definition of "home improvement", and any contractor doing residential roofing over $200…

14. ReferenceState registration

    Roofing License Requirements in Delaware

    Delaware has no roofing trade license and no roofing classification — but it is not a no-requirement state either. Every construction business must register with the Department of Labor's Office of…

15. ReferenceState license

    Roofing License Requirements in District of Columbia

    The District licenses roofing at the district level. Residential roofing is home improvement work, so a contractor doing a residential roof job of $300 or more needs a Home Improvement Contractor…

16. ReferenceState license

    Roofing License Requirements in Florida

    Florida requires a state license for roofing. DBPR's Construction Industry Licensing Board lists "construct a roof for compensation" among the services requiring a DBPR license, and roofing is one of…

17. ReferenceNo state license — local only

    Roofing License Requirements in Georgia

    Georgia does NOT license roofing contractors at state level. Under O.C.G.A. § 43-41-17, specialty contractors who contract with an owner to perform limited, specialty or specific trade work do not…

18. ReferenceState license

    Roofing License Requirements in Hawaii

    Hawaii requires a state license. HRS § 444-9 provides that no person may act or advertise as a general engineering, general building or specialty contractor without a license from the Contractors…

19. ReferenceState registration

    Roofing License Requirements in Idaho

    Idaho requires state REGISTRATION, not licensure. The Idaho Contractors Board within DOPL administers contractor registration under the Idaho Contractor Registration Act (Idaho Code Title 54, Chapter…

20. ReferenceState license

    Roofing License Requirements in Illinois

    Illinois has a genuine dedicated state roofing license — one of the few states with a stand-alone roofing licensing act. Under the Illinois Roofing Industry Licensing Act (225 ILCS 335), administered…