Public Reference

Industry Primers

Bottom-up NAICS industry primers written for both public-market and private investors. Leaf industries are researched from the ground up; every group, subsector, and sector above them reads as a contrast across the industries beneath it.

2122 industries · 24 sectors · NAICS 2022

Researched with AI assistance from official U.S. statistics and independent sources, with citations on every page. Figures are not individually verified against pinned evidence — primers marked Evidence-verified are. Industry research, not investment advice. Methodology.

National industryNAICS 238160Construction

Roofing Contractors (United States) — NAICS 238160

An investor's primer for a general audience. Figures marked as reported are historical facts from the cited sources; statements about where the industry is heading are forward-looking judgments.

1. Overview

Roofing contractors install, repair, and replace the roofs on America's homes, stores, warehouses, schools, and factories. NAICS (North American Industry Classification System) code 238160 covers the businesses that do the physical work on the roof — not the mills that make the shingles, and not the yards that sell them. It is one of the specialty construction trades, and three features make it worth understanding.

First, it is large and recurring. Every roof wears out. Roughly 80% of U.S. roofing demand is re-roofing, repair, and maintenance of existing buildings rather than roofs on new construction, which makes the industry far steadier than most of the construction economy.[9] A leaking roof gets fixed whether or not interest rates are high.

Second, it is extraordinarily fragmented. The federal government counts about 24,000 employer roofing firms, and the four largest together hold just 4.4% of industry revenue.[2] That fragmentation is exactly what is now drawing capital: private-equity firms are buying local roofers and stitching them into regional "platforms" at a fast clip.[11]

Third, the businesses differ by where they sit in the value chain, and the clean public ways to invest are indirect. Contractors monetize labor, relationships, estimating, and execution; manufacturers monetize products; distributors monetize branch networks, inventory, and contractor credit. There is essentially no large, pure-play, publicly traded roofing contractor left after a wave of 2023–2026 takeovers. Public investors reach the industry mainly through the manufacturers that make roofing materials (Owens Corning, Carlisle, Amrize) and the distributors that sell them (QXO, Home Depot's SRS unit). The contractors themselves — the companies inside code 238160 — are almost entirely private, owned by families, employees, or private-equity roll-ups. This primer covers both routes.

2. What it is, and how it's structured

Scope. NAICS 238160 is establishments primarily engaged in roofing work: installing and repairing roofs, spraying/coating/treating roofs, and installing skylights — covering new work, additions, alterations, maintenance, and repairs.[5]

What it excludes (and where that work is counted). The code is narrower than "everything on top of a house." Adjacent classifications:

  • Manufacturing the materials — asphalt shingles, coatings, sheet-metal roofing, tar paper — sits in factory codes (e.g., 324122 Asphalt Shingle and Coating Materials), not here.[5]
  • Distributing/wholesaling those materials is 423330 (Roofing, Siding, and Insulation Material Merchant Wholesalers).[5]
  • Roof trusses and sheathing attached to trusses → 238130 Framing Contractors.[5]
  • Gutters, downspouts, fascia, soffits, and siding → 238170 Siding Contractors.[5]
  • Solar-panel installation → 238210 Electrical Contractors and Other Wiring Installation Contractors — even when panels sit on a roof.[5]

So the code captures the installation labor and the roofing subcontract, and excludes the materials supply chain and the solar attachments around it — an important distinction, because most of the public investment exposure lives in those excluded manufacturing and distribution codes.

Residential vs. commercial. Residential roofers mostly install asphalt shingles, tile, and metal on homes. Commercial roofers work on low-slope ("flat") systems — single-ply membranes, coatings, insulation, metal, and waterproofing — on schools, warehouses, and plants, with a much larger role for preventive maintenance, warranties, facilities management, and national accounts.

Ownership mix. This is a trade of small, local, owner-operated businesses. About 65% of roofing employer firms have four or fewer employees, and roughly 91% have fewer than 20.[7] On top of that base sits a layer of larger regional commercial specialists (Tecta America, CentiMark, the Flynn Group), employee-owned companies, franchises, and — increasingly — private-equity-backed platforms rolling up the smaller firms.[11] The ground-truth federal file does not provide a beneficial-ownership split, and legal form (corporation vs. sole proprietorship) is not the same as ultimate ownership. Public ownership reaches the trade only at the edges (see §4).

3. How big it is

Our federal ground-truth figures for NAICS 238160. The vintages and universes differ, so they should not be combined into one precise market-size calculation:

Metric Value Source (year)
Industry receipts (revenue) $69.9 billion Economic Census (2022)[2]
Firms 24,082 Economic Census (2022)[2]
Employer establishments 25,519 County Business Patterns (2023)[1]
Paid employees 215,242 County Business Patterns (2023)[1]
Annual payroll $15.2 billion County Business Patterns (2023)[1]
Top-4 firms' revenue share (CR4) 4.4% Economic Census (2022)[2]
Top-8 firms' revenue share (CR8) 5.8% Economic Census (2022)[2]
Top-20 firms' revenue share (CR20) 9.2% Economic Census (2022)[2]
Top-50 firms' revenue share (CR50) 14.2% Economic Census (2022)[2]
Market-concentration index (HHI) suppressed Economic Census (2022)[2]
SBA small-business size standard $19 million in annual receipts SBA (2023)[4]

The story those numbers tell: about $70 billion of contractor revenue spread across 24,000-plus firms, with the very top of the field barely denting the total — the 50 largest firms together account for only 14.2% of receipts. A concentration ratio (CR) is the share of industry revenue held by the largest N firms; these are among the lowest in the construction economy. The Herfindahl-Hirschman Index (HHI, a standard market-concentration measure) was suppressed by the Census Bureau, itself a signal of how dispersed the field is. For context, the U.S. Small Business Administration (SBA) treats a roofing contractor with up to $19 million of annual receipts as a "small business," which sweeps in almost the entire industry — that threshold is a federal classification, not an estimate of typical company size.[4]

The undercount caveat — read this before trusting any headline count. County Business Patterns and the Economic Census count employer establishments — businesses with payroll — and exclude the self-employed, firms with no employees or no employer tax ID, and most government workers.[6] Roofing is unusually skewed toward the smallest operators, and a large population of no-payroll sole proprietors, day-labor crews, and cash operators sits largely outside those datasets. Third-party sources that fold in non-employers count on the order of ~96,000 roofing businesses, versus the ~24,000 employer firms in the federal data.[7] The Census Bureau publishes Nonemployer Statistics for exactly this gap, but the matching count for code 238160 is not in our ground-truth set, so we flag it as a genuine data gap rather than estimate it.[3] The labor force is also under-captured: immigrants make up roughly half of the roofing workforce, and one estimate put undocumented roofing workers around 75,000.[34] Net effect: official receipts and employment are best read as a floor on true industry activity. Private-market estimates of the broader "roofing contractor services" market run higher (some near $90 billion for 2025), reflecting both growth since the 2022 Census and wider coverage.[9]

4. The investable universe

There is no large, pure, publicly traded U.S. roofing contractor today. Most listed exposure is upstream (materials) or adjacent (distribution, diversified property services). Tickers and roles below; treat this as a map of exposure points, not a menu of pure plays.

Company Ticker / status Role in roofing Approx. scale & exposure
Owens Corning OC (NYSE) Manufacturer — residential asphalt shingles Roofing is its largest, most profitable segment; ~$1.1B roofing revenue in Q3 2024 (+8% YoY); ~20% U.S. shingle share[16][18]
Carlisle Companies CSL (NYSE) Manufacturer — commercial single-ply membrane & building envelope (TPO, EPDM, PVC, polyiso) Construction-materials arm ~$1.5B in a quarter (+11% YoY)[16][19]
Amrize AMRZ (NYSE/SIX) Manufacturer — building envelope / commercial roofing systems (brands: Elevate, Duro-Last, Malarkey, Gaco) Spun off from Holcim June 2025; ~$11.7B total 2024 revenue; calls itself the #2 U.S. commercial roofing provider[17]
Saint-Gobain SGO (Euronext Paris) Manufacturer — owns CertainTeed shingles ~15% U.S. shingle share; foreign-listed[16][20]
RPM International RPM (NYSE) Manufacturer & services — Tremco roofing systems, coatings, waterproofing, and roofing services Roofing is one line within a diversified specialty-coatings company[21]
QXO QXO (NYSE) Distributor (materials to contractors) Largest publicly traded roofing/building-products distributor; ~$18B combined revenue after absorbing Beacon (2025) and TopBuild (2026)[12][14]
Home Depot HD (NYSE) Distributor (owns SRS Distribution + GMS) Bought SRS for $18.3B (2024) and Gypsum Management & Supply for $5.5B (2025) to build a pro/roofing distribution arm[13]
FirstService FSV (NASDAQ/TSX) Property services — owns Roofing Corp of America Closest listed name to direct contractor exposure, but a diversified property-services company[22]

Also relevant: Installed Building Products (IBP, NYSE) is a public installer, but roofing is a thin line inside a mostly-insulation business.

Private / PE-owned — where the actual contractors live:

  • Distributors: ABC Supply — the largest U.S. roofing distributor, privately held (founded by Diane and Kenneth Hendricks), ~$20.2B in 2025 sales across 970+ locations.[23]
  • Shingle/material makers held privately: GAF (owned by Standard Industries), the U.S. shingle share leader at ~30%; plus IKO (~12%), Atlas (~10%), and TAMKO.[16][25]
  • Large contractors: Tecta America — the #1 U.S. roofing contractor, ~$1.4B revenue, majority-owned by Altas Partners and management with Leonard Green & Partners as a minority investor; CentiMark (family- and employee-owned); Baker Roofing (employee-owned); Greenwood Industries; the Flynn Group.[24][26][27][28][33]
  • PE roll-up platforms & recent buyouts: Vertex Service Partners (Alpine Investors), Infinity Home Services, Omnia Exterior Solutions (CCMP), Nations Roof (AEA Investors, 2024), Quick Roofing (Centre Partners), Best Choice Roofing (Brightstar Capital, 2024), Ridgeline Roofing & Restoration (Bertram Capital), and dozens more.[11][29][30][31][32] This list is representative, not a complete ownership census.

Recent deals reshaped this table fast. Home Depot bought SRS Distribution for ~$18.3B (2024) and Gypsum Management & Supply (GMS) for ~$5.5B (completed September 2025).[13] QXO acquired Beacon Roofing Supply for ~$11B (closed April 2025; Beacon ceased trading and was renamed QXO Building Products),[12] then acquired TopBuild for ~$17B (closed July 1, 2026); TopBuild's NYSE listing "BLD" was retired, and its commercial-roofing installation business (Progressive Roofing, bought for $810M in 2025) now sits inside QXO.[14][15] The upshot for a public investor: the distributor and manufacturer tiers are consolidating into a handful of large listed names, while the contractor tier stays private.

5. How the money works

The unit of production is a "square" — 100 square feet of finished roof.[39] Contractors price and cost jobs per square, and crew productivity (squares completed per day) drives profitability as much as pricing does. A roofing contractor typically earns revenue from four activities: replacement/re-roofing, repairs and preventive maintenance, new construction, and storm/disaster restoration. A job runs from inspection and estimate to contract, permit, material order, tear-off, install, disposal, final inspection, warranty administration, and collection.

Residential unit economics. A typical asphalt-shingle re-roof runs roughly $5,800–$10,100 for a whole house.[39] Materials are about 25–30% of job cost and crew labor another 20–25%.[39] Industry gross margins run about 25–40%, and net margins after overhead and taxes typically land around 5–12% (well-run shops higher).[39] A representative $12,000 job at a 30% gross margin leaves ~$3,600 of gross profit; at an 8% net margin, ~$960 falls to the bottom line.[39] Owners make money by volume × margin per job: keeping crews fully utilized, buying materials well (distributor rebates matter), and spreading fixed overhead — sales, trucks, insurance, warranty reserves — across enough jobs. Our ground-truth file provides no sector-wide margin, project-size, or utilization data, so these are industry sources, not Census figures.

Commercial unit economics are a different, larger business: flat-roof systems (single-ply membranes such as TPO — thermoplastic polyolefin — and EPDM — ethylene propylene diene monomer — plus PVC, built-up, and modified-bitumen roofs). Contracts are bigger, and a large share is non-discretionary re-roofing and recurring maintenance — Progressive Roofing, for example, ran about 70% re-roof/maintenance versus 30% new construction.[15] The U.S. commercial roofing services market is roughly $75 billion and highly fragmented.[15] Commercial work also carries heavier working-capital demands — material purchases, progress billing, retainage, and slow-paying owners or general contractors — while maintenance and warranty-service contracts give the better operators recurring, higher-margin revenue.

Insurance-funded demand. A large slice of residential re-roofing is paid by homeowners' insurance after storm or hail damage, not out of pocket. That makes carriers' claim behavior — deductibles, roof-age rules, whether they pay to replace versus repair — a direct driver of contractor revenue.[40]

How the other tiers earn. Distributors (ABC Supply, QXO, SRS) earn a gross margin on high-volume material sales and logistics; branch density and location are the moat. Manufacturers (Owens Corning, GAF, Carlisle, Amrize) earn on shingle and membrane volume and pricing, and roofing tends to be their most profitable segment because branded, code-driven products command pricing power.[16]

6. What drives demand

  • The replacement cycle (the base load). Asphalt roofs last roughly 15–25 years, so a steady stream of aging roofs needs replacing regardless of the economy. This ~80% re-roof/repair share is why roofing is more defensive than most construction — though customers can still delay work.[9]
  • Storms and hail (the swing factor). Wind and hail drive insurance-funded replacements; U.S. insurers paid over $31 billion in wind/hail residential roof claims in 2024, and ~12.6 million homes sit in high hail-risk zones — an estimated $189 billion of potential replacement exposure.[40] For scale, the National Oceanic and Atmospheric Administration (NOAA) recorded 403 U.S. weather and climate disasters with losses above $1 billion from 1980 through 2024, though not all were roofing-related.[41] A big storm season is a revenue boom; a mild one is a drought.
  • New construction. Residential and nonresidential building add the remaining ~20% of demand and are the interest-rate-sensitive part.[9] As a current economy-wide indicator (not a roofing forecast), the Census Bureau reported May 2026 housing permits at a seasonally adjusted annual rate of 1,413,000 units and starts at 1,177,000 units.[42]
  • Housing turnover and renovation. Home sales and remodels pull forward roof replacements (buyers and sellers fix roofs at closing).
  • Efficiency, resilience, and codes. Energy-efficiency upgrades (insulation, reflective/cool-roof coatings), resilient specifications in high-wind/hail/wildfire markets, and stricter building/energy codes can lift upgrade demand; tighter wind/hail deductibles or roof-age exclusions can suppress claim-funded work.[40] Rooftop solar drives some roof replacements, though solar installation itself is classified outside 238160.

7. Regulation

  • State licensing — a patchwork. There is no federal roofing license. About 27 states require a contractor license to roof, and roughly 19 of those require a roofing-specific exam covering trade knowledge and business law; some states require no state license at all, leaving it to localities. Thresholds vary (California requires licensing above $500 of work).[35]
  • Worker safety — OSHA. Falls are the trade's defining hazard. The Occupational Safety and Health Administration (OSHA) generally requires fall protection for roofing work at heights of 6 feet or more under 29 CFR (Code of Federal Regulations) 1926.501 — guardrails, safety nets, or personal fall-arrest systems; state OSHA plans may add requirements.[36]
  • Building and energy codes. The International Residential Code (IRC) and International Building Code (IBC) govern roof assemblies, coverings, reroofing, and fire/wind resistance, subject to local adoption and amendment, including cool-roof requirements in hot climates.[37]
  • Lead-safe work rules — EPA. The Environmental Protection Agency's (EPA) Lead Renovation, Repair and Painting (RRP) Rule can apply when contractors disturb painted surfaces on pre-1978 housing, schools, or child-occupied facilities; covered firms must use lead-safe practices and hold certification.[38]
  • Labor and immigration enforcement. Because roughly half the workforce is foreign-born, E-Verify and immigration-enforcement policy directly affect labor supply and cost — a live regulatory risk in 2025–2026.[34]
  • Consumer-protection / insurance rules. State laws on storm-chasing, assignment-of-benefits, and insurance "matching" shape how insurance-funded jobs are sold and paid. Manufacturer certifications and warranties, while not government licenses, are commercially important — they influence homeowner conversion, commercial specifications, and claims.[40]

8. Competitive dynamics & consolidation

Roofing is a textbook fragmented, local, relationship-driven trade: low capital requirements, licensing/insurance/bonding as the main entry barriers, and a top-4 revenue share of only 4.4%.[2] Competition is won on responsiveness, reputation, insurance-claim expertise, trained foremen, supplier credit, and — for storm work — simply being on the ground fast.

Scale still helps with purchasing and freight, lead generation and digital marketing, estimating and aerial measurement, safety and training systems, national-account coverage, and recruiting. Two consolidation waves are running at once:

  • Distribution (top-down, public). ABC Supply, QXO/Beacon, Home Depot/SRS+GMS, and Gulfeagle have turned a once-regional supply chain into a few national giants.[11][12][13]
  • Contracting (bottom-up, private). Private equity is buying local roofers into regional platforms, drawn by the recurring re-roof base and fragmentation. Backers were reportedly acquiring a roofing platform roughly every 48 hours by mid-2025; PE-backed platforms grew from ~17 in early 2023 to ~56 by end-2024, and buyout multiples have settled around 6–9× EBITDA (earnings before interest, taxes, depreciation, and amortization) from an earlier peak of 8–11×.[11] The comparison insiders make is to HVAC (heating, ventilation, and air conditioning) consolidation a decade ago.

The likely path is regional consolidation rather than instant national dominance: acquirers centralize systems and procurement while keeping local names and crews. Technology (customer-relationship-management software, aerial/drone measurement, instant quoting) is professionalizing sales and is part of the roll-up thesis. The core risk is that financial scale does not automatically create roofing capacity or installation quality.

9. Risks

  • Weather variance cuts both ways. Storm-driven demand is real revenue but unpredictable; a calm hail season can hollow out a year, and a big one strains labor and materials.[40]
  • Insurance tightening. Higher wind/hail deductibles, roof-age depreciation, repair-not-replace stances, and carrier exits from coastal/hail states can throttle the claim-funded replacement pipeline.[40]
  • Labor supply and safety. The trade is chronically short of workers and heavily reliant on immigrant labor; enforcement crackdowns raise wages and can stall jobs. Falls, injuries, turnover, and workers'-comp costs hit margins and reputation.[34]
  • Material-cost and tariff inflation. Owens Corning notes that oxidized asphalt — a key shingle input — tracks crude-oil prices; asphalt, steel, aluminum, and tariff swings move job costs faster than fixed-price contracts can reprice.[18]
  • Cyclicality at the margin. The ~20% tied to new construction is interest-rate- and housing-cycle-sensitive.[9]
  • Execution and warranty. Poor installation, defective materials, leaks, callbacks, litigation, and warranty obligations can erase years of profit.
  • Working capital and roll-up execution. Fast growth consumes cash through inventory, receivables, and retainage; PE platforms carry acquisition debt and integration risk, and overpaying in a hot deal market compresses returns.[11]
  • Commoditization and fraud reputation. Low entry barriers invite price competition and "storm-chaser" operators, a reputational drag on the whole trade.
  • Data risk. Employer-only federal statistics understate the number of very small and nonemployer businesses (see §3).

10. How to invest, and the outlook

Public routes. First identify where a company sits in the value chain, then judge it on the right yardstick.

  • Materials makers are the cleanest listed proxies: Owens Corning (OC) and Carlisle (CSL) are the most direct U.S. plays; Amrize (AMRZ) adds building-envelope/commercial-roofing exposure; Saint-Gobain (SGO, Paris) owns CertainTeed for those who can buy foreign shares; RPM International (RPM) offers Tremco roofing systems inside a diversified coatings company. Judge a manufacturer on volume, price-cost recovery (raw-material exposure), product mix, capacity, and warranty history.[16][17][21]
  • Distribution is reachable through QXO (QXO) — now the dominant listed roofing-products distributor — and Home Depot (HD), whose SRS/GMS units carry a pro-roofing arm. Judge a distributor on branch density, gross margin, inventory turns, contractor retention, and acquisition discipline.[12][13]
  • Contractor-adjacent: FirstService (FSV) owns Roofing Corp of America but remains a diversified property-services company; Installed Building Products (IBP) offers only thin roofing exposure inside an insulation business. A pure public contractor is effectively unavailable after TopBuild's 2026 delisting.[14][22]

Private routes. This is where the contractors themselves are owned: direct ownership or roll-up of local firms; investing in or alongside the PE platforms (Vertex, Infinity, Tecta, and peers); private credit to contractors; and franchise/brand models.[11] Underwrite each business on repeat/maintenance revenue, owner dependence and succession, crew employment vs. subcontracting, gross profit by job and channel, insurance-claim exposure, safety/licensing/bonding records, receivables and retainage, customer/supplier concentration, and — for platforms — whether local managers stay after the sale. These carry the operating leverage to the actual ~$70 billion contractor pool that the public names only touch indirectly.[2]

Near-term outlook (forward-looking). The base case is durable but uneven: an aging roof stock and a heavily non-discretionary re-roof/maintenance mix make demand comparatively defensive, and consolidation — both distribution and contracting — looks set to continue. The variables to watch are the swing factors, not the base load: storm-season severity, whether insurers keep tightening roof coverage (a genuine headwind into 2026), immigration/labor availability, and material-cost/tariff pressure. New-construction roofing will track interest rates and housing. For public investors, roofing is best treated as a set of exposure points — consolidating manufacturers and distributors — rather than a clean standalone sector. For private investors, it remains one of the most fragmented, cash-generative, roll-up-ready trades in the building economy, but the winners will be operators that improve local execution and cash generation, not merely accumulate branches.


Sources

  1. U.S. Census Bureau — County Business Patterns, NAICS 238160 (2023). https://www.census.gov/data/datasets/2023/econ/cbp/2023-cbp.html
  2. U.S. Census Bureau — 2022 Economic Census, Establishment and Firm Size / Concentration of Largest Firms, NAICS 238160 (2022). https://api.census.gov/data/2022/ecnsize.html
  3. U.S. Census Bureau — Nonemployer Statistics, NAICS 238160 (2022). https://api.census.gov/data/2022/nonemp.html
  4. U.S. Small Business Administration — Table of Small Business Size Standards, NAICS 238160 (2023). https://www.sba.gov/document/support-table-size-standards
  5. U.S. Census Bureau — 2022 NAICS Manual, and NAICS.com definition/cross-references for 238160 (excludes 238130, 238170, 238210, 324122). https://www.census.gov/naics/reference_files_tools/2022_NAICS_Manual.pdf; https://www.naics.com/naics-code-description/?code=238160
  6. U.S. Census Bureau — County Business Patterns methodology (employer-only coverage). https://www.census.gov/programs-surveys/cbp/technical-documentation/methodology.html
  7. IBISWorld — "Roofing Contractors in the US: Number of Businesses" (~96,000 including non-employers, 2023) and firm-size distribution. https://www.ibisworld.com/united-states/number-of-businesses/roofing-contractors/198/
  8. U.S. Bureau of Labor Statistics — Occupational Outlook Handbook: Roofers (2024–2025). https://www.bls.gov/ooh/construction-and-extraction/roofers.htm
  9. Finturf / market-research summaries — "Roofing Industry Trends & Stats 2025" (re-roof ~80% of demand; broader services-market size). https://finturf.com/blog/roofing-industry/
  10. Mordor Intelligence — "United States Roofing Market Size & Share Outlook" (2025). https://www.mordorintelligence.com/industry-reports/united-states-roofing-market
  11. Roofing Contractor (BNP Media) / AXIA Advisors / CT Acquisitions — "Private Equity Outlook" and roll-up trackers (platform cadence, platform counts, EBITDA multiples) (2025). https://www.roofingcontractor.com/articles/100478-roofings-big-deal-what-contractors-need-to-know-about-private-equity-in-2025
  12. QXO Investor Relations / LBM Journal — "QXO Completes Acquisition of Beacon Roofing Supply" (~$11B, April 2025). https://investors.qxo.com/news/news-details/2025/QXO-Completes-Acquisition-of-Beacon-Roofing-Supply/default.aspx
  13. The Home Depot / Roofing Contractor — SRS Distribution ($18.3B, 2024) and GMS ($5.5B, completed September 2025) acquisitions. https://ir.homedepot.com/news-releases/2024/06-18-2024-153031934
  14. MarketScreener / SEC filings — "QXO Completes TopBuild Acquisition" (~$17B, closed July 1, 2026; BLD delisted). https://www.marketscreener.com/news/qxo-inc-completed-the-acquisition-of-topbuild-corp--ce7f5fd2d981ff27
  15. The Globe and Mail / Distribution Strategy Group — "TopBuild Acquires Progressive Roofing for $810 Million" ($438M revenue; ~$75B commercial roofing market; ~70% non-discretionary) (2025). https://www.theglobeandmail.com/investing/markets/stocks/BLD/pressreleases/33294247/topbuild-acquires-progressive-roofing-for-810-million/
  16. GMInsights / Yahoo Finance / Mordor Intelligence — U.S. asphalt-shingle market shares (GAF ~30%, Owens Corning ~20%, CertainTeed ~15%, IKO ~12%, Atlas ~10%); Owens Corning and Carlisle roofing-segment revenue (2024). https://www.gminsights.com/industry-analysis/asphalt-shingles-market
  17. Holcim / Roofing Contractor — "Holcim Completes Spin-off of North America Business" (Amrize, NYSE/SIX: AMRZ; June 23, 2025; ~$11.7B 2024 revenue; #2 U.S. commercial roofing provider; brands Elevate, Duro-Last, Malarkey, Gaco). https://www.holcim.com/media/media-releases/holcim-completes-spin-off-of-north-america-business
  18. Owens Corning — 2025 results and Roofing segment / 10-K (oxidized asphalt input; asphalt cost correlates with crude oil). https://investor.owenscorning.com/
  19. Carlisle Companies — 2025 Annual Report / commercial roofing systems (TPO, EPDM, PVC, polyiso). https://www.carlisle.com/investors
  20. Saint-Gobain — CertainTeed North American roofing brand. https://www.saint-gobain.com/en/solutions/our-comprehensive-solutions-sustainable-construction
  21. RPM International — 2025 Form 10-K; Tremco roofing systems, coatings, and roofing services. https://www.sec.gov/Archives/edgar/data/110621/000095017025098313/rpm-20250531.htm
  22. FirstService Corporation — "FirstService Acquires Roofing Corp of America" (2023). https://www.globenewswire.com/news-release/2023/12/18/2797737/36351/en/firstservice-acquires-roofing-corp-of-america.html
  23. ABC Supply / Forbes — company fact sheet and ownership (largest U.S. roofing distributor; ~$20.2B 2025 sales; 970+ locations; Diane & Kenneth Hendricks). https://www.abcsupply.com/media-center/fact-sheet/
  24. Roofing Contractor — Top 100/150 Roofing Contractors ranking (Tecta America #1, ~$1.4B revenue) (2024–2025). https://www.roofingcontractor.com/articles/101115-the-top-10-roofing-contractors-of-2025
  25. Standard Industries — owner of GAF (U.S. shingle share leader ~30%). https://standardindustries.com/about
  26. Leonard Green & Partners — "Leonard Green Partners with Altas to Support Tecta America" (Tecta ownership) (2021). https://www.leonardgreen.com/leonard-green-partners-with-altas-to-support-the-continued-growth-of-tecta-america/
  27. CentiMark — family and employee ownership. https://www.centimark.com/
  28. Baker Roofing — employee-owned, multi-region. https://bakerroofing.com/our-story-always-good-work/
  29. AEA Investors — "AEA Acquires Nations Roof" (2024). https://www.aeainvestors.com/aea-acquires-nations-roof/
  30. Centre Partners — "Centre Partners Completes Acquisition of Quick Roofing" (2024). https://www.prnewswire.com/news-releases/centre-partners-completes-acquisition-of-quick-roofing-302028590.html
  31. Brightstar Capital Partners — "Acquires Best Choice Roofing" (2024). https://www.globenewswire.com/news-release/2024/08/07/2926134/0/en/brightstar-capital-partners-acquires-best-choice-roofing-a-national-provider-of-residential-roofing-services.html
  32. Bertram Capital — "Partners with Ridgeline Roofing & Restoration" (2024). https://www.bertramcapital.com/news/bertram-capital-partners-with-ridgeline-roofing-restoration
  33. Greenwood Industries — privately held commercial roofing and building-envelope contractor. https://greenwoodindustries.com/about/who-we-are/
  34. NAHB / Home Builders Institute / Roofing Contractor — immigrant share of the roofing workforce (~half); ~75,000 undocumented roofing workers (2025). https://www.nahb.org/advocacy/industry-issues/labor-and-employment/immigration-reform-is-key-to-building-a-skilled-workforce/concentration-of-immigration-in-construction-trades
  35. NEXT Insurance / RoofVista / Fixr — roofing contractor licensing requirements by state (~27 states require a license; ~19 a roofing-specific exam) (2026). https://roofvista.com/resources/guides/roofing-contractor-licensing-by-state
  36. Occupational Safety and Health Administration — Fall protection, 29 CFR 1926.501 (6-foot trigger); residential fall-protection guidance. https://www.osha.gov/residential-fall-protection
  37. International Code Council — 2024 International Residential Code / International Building Code: Roof Assemblies. https://codes.iccsafe.org/content/IRC2024V2.0/chapter-9-roof-assemblies
  38. U.S. Environmental Protection Agency — Lead Renovation, Repair and Painting (RRP) Program: Contractors. https://www.epa.gov/lead/renovation-repair-and-painting-program-contractors
  39. Roofr / ServiceTitan / RoofingCalculator — roofing profit margins (gross ~25–40%, net ~5–12%), cost structure, residential replacement cost ($5,840–$10,100), and the "square" unit (2024–2026). https://roofr.com/blog/how-profitable-is-the-average-roofing-business
  40. TAMKO / Bill Ragan Roofing / industry reporting — hail and storm exposure (~12.6M high-risk homes; ~$189B potential exposure; >$31B in 2024 wind/hail residential claims) and insurance claim behavior (2024–2026). https://www.businesswire.com/news/home/20260302130332/en/TAMKO-Introduces-HailGuard-Shingles-The-Industrys-First-and-Only-Asphalt-Shingle-with-an-Extended-Hail-Warranty
  41. National Oceanic and Atmospheric Administration — Billion-Dollar Weather and Climate Disasters (403 U.S. events, 1980–2024). https://www.ncei.noaa.gov/access/billions/state-summary/US
  42. U.S. Census Bureau — Monthly New Residential Construction (May 2026 permits/starts). https://www.census.gov/construction/nrc/current/