Which commercial roofing contractors do ChatGPT, Gemini and Google AI recommend? (October 2026)
When US buyers ask AI engines for a commercial roofing contractor without naming a city, the same national contractors come back. Tecta America was named most often, in 36 of 50 answers (72.0%), followed by CentiMark (34) and Nations Roof (33). 49 of the 50 answers named at least one firm, and 115 different firms were named in total, 94 of them only once.
By Frederik Jakobsen, founder of Danish Lead Co and SourceRank AI. Measured 10 October 2026, published October 2026.
The firms AI named most often
Share of all 50 answers that named the firm as a provider, and how many answers on each engine named it. An answer counts once per firm however often it repeats the name.
98.0%
Answers that named at least one provider firm: 49 of 50. The rest gave criteria or advice and no names.
115 firms
Distinct firms named across all 50 answers. 94 of them were named in only one answer.
32.8%
Share of all 314 firm mentions taken by the three most named firms, Tecta America, CentiMark and Nations Roof.
| # | Firm | Answers naming it | Engines | ChatGPT of 12 | Gemini of 12 | Copilot of 4 | AI Mode of 12 | AI Overviews of 10 |
|---|---|---|---|---|---|---|---|---|
| 1 | Tecta America | 36 of 50 72.0% | 5 of 5 | 6 | 12 | 3 | 7 | 8 |
| 2 | CentiMark | 34 of 50 68.0% | 5 of 5 | 6 | 11 | 2 | 8 | 7 |
| 3 | Nations Roof | 33 of 50 66.0% | 5 of 5 | 6 | 10 | 4 | 7 | 6 |
| 4 | Baker Roofing | 31 of 50 62.0% | 5 of 5 | 5 | 9 | 3 | 7 | 7 |
| 5 | Flynn Group of Companies | 24 of 50 48.0% | 5 of 5 | 5 | 7 | 3 | 4 | 5 |
| 6 | Greenwood Industries | 10 of 50 20.0% | 5 of 5 | 4 | 2 | 2 | 1 | 1 |
| 7 | Kalkreuth Roofing and Sheet Metal | 8 of 50 16.0% | 3 of 5 | 2 | 5 | 1 | 0 | 0 |
| 8 | Simon Roofing | 6 of 50 12.0% | 3 of 5 | 3 | 0 | 1 | 0 | 2 |
| 9 | RoofConnect | 6 of 50 12.0% | 3 of 5 | 3 | 2 | 1 | 0 | 0 |
| 10 | Roofing Corp of America | 4 of 50 8.0% | 4 of 5 | 1 | 0 | 1 | 1 | 1 |
| 11 | KPost Company | 4 of 50 8.0% | 4 of 5 | 1 | 1 | 0 | 1 | 1 |
| 12 | Advanced Roofing | 4 of 50 8.0% | 3 of 5 | 2 | 0 | 1 | 0 | 1 |
| 13 | Simpson Unlimited | 3 of 50 6.0% | 1 of 5 | 3 | 0 | 0 | 0 | 0 |
| 14 | Skyline Roofing | 3 of 50 6.0% | 1 of 5 | 3 | 0 | 0 | 0 | 0 |
| 15 | Latite Roofing | 2 of 50 4.0% | 2 of 5 | 1 | 1 | 0 | 0 | 0 |
Top 15 of 115 firms. Engine columns show answers naming the firm out of that engine's measured answers. Firms with the same count are listed in the order the data was read.
What the answers show
- +Five national contractors account for 158 (50.3%) of all 314 firm mentions: Tecta America (36), CentiMark (34), Nations Roof (33), Baker Roofing (31) and Flynn Group of Companies (24), out of 50 answers. The sixth, Greenwood Industries, was named in 10.
- +Gemini was the most consistent: it named Tecta America in 12 of 12 answers and CentiMark in 11 of 12. ChatGPT spread its answers across more firms, 60 in total.
- +8 of Copilot's 12 answers came back written for a buyer outside the US and named local roofers there, a side effect of the third-party service we query Copilot through, which runs each session from a random location. They are excluded, so only 4 Copilot answers are counted in this category.
- +Contractors' own sites are cited less here than in other categories: in 17 of 32 answers with sources. Trade publications and roofing blogs (owlroofing.com, theroofingbrief.com, roofingcontractor.com) carry most citations.
What each engine named
The most named firm per engine.
| Engine | Answers | Named a provider | Distinct firms | Most named firm on that engine |
|---|---|---|---|---|
| ChatGPT | 12 | 12 of 12 100.0% | 60 | Tecta America, CentiMark, Nations Roof (6 of 12) |
| Gemini | 12 | 12 of 12 100.0% | 30 | Tecta America (12 of 12) |
| Microsoft Copilot | 4 | 4 of 4 100.0% | 17 | Nations Roof (4 of 4) |
| Google AI Mode | 12 | 12 of 12 100.0% | 25 | CentiMark (8 of 12) |
| Google AI Overviews | 10 | 9 of 10 90.0% | 25 | Tecta America (8 of 10) |
First-pick agreement: in 8 of the 12 questions where at least two engines named a firm, two or more engines named the same firm first. Tecta America was named by 5 of 5 engines. Google showed no AI Overview for 2 of the 12 questions; those are not counted as answers.
The sources behind the recommendations
Most cited domains in the 32 answers that showed a source list.
| # | Cited domain | Kind | Answers citing it |
|---|---|---|---|
| 1 | owlroofing.com | Other (blogs, listicles, publishers, other vendors) | 14 of 32 43.8% |
| 2 | theroofingbrief.com | Other (blogs, listicles, publishers, other vendors) | 9 of 32 28.1% |
| 3 | roofingcontractor.com | Other (blogs, listicles, publishers, other vendors) | 7 of 32 21.9% |
| 4 | levelset.com | Other (blogs, listicles, publishers, other vendors) | 7 of 32 21.9% |
| 5 | siteline.com | A named firm's own website | 6 of 32 18.8% |
| 6 | youtube.com | Social and video | 4 of 32 12.5% |
| 7 | roofconnect.com | A named firm's own website | 4 of 32 12.5% |
| 8 | simonroofing.com | A named firm's own website | 4 of 32 12.5% |
| 9 | commercialroofingadvisors.com | Other (blogs, listicles, publishers, other vendors) | 3 of 32 9.4% |
| 10 | bakerroofing.com | A named firm's own website | 3 of 32 9.4% |
| 11 | nationsroof.com | A named firm's own website | 3 of 32 9.4% |
| 12 | leadsmunch.com | Other (blogs, listicles, publishers, other vendors) | 3 of 32 9.4% |
Out of the 32 answers that carried a source list (92 distinct domains). Sources per engine: ChatGPT 0 of 12, Gemini 10 of 12, Copilot 4 of 4, AI Mode 8 of 12, AI Overviews 10 of 10.
| Source kind | Answers citing at least one |
|---|---|
| Other (blogs, listicles, publishers, other vendors) | 32 of 32 100.0% |
| A named firm's own website | 17 of 32 53.1% |
| Social and video | 4 of 32 12.5% |
| Community forum | 4 of 32 12.5% |
| Directory, review or analyst site | 3 of 32 9.4% |
An answer can cite several kinds, so the rows do not sum to the total. "A named firm's own website" means the domain matches the name of a firm named in this category.
What the named firms have in common
The five most named are national, multi-region contractors, as the answers themselves describe them. That is a feature of the questions as much as the firms: without a city in the question, the engines default to companies with a national footprint. A regional contractor is far more likely to be named when the buyer includes a location.
How a firm in this category gets named
Being named depends on what the engines read. In this category, of the 32 answers that showed their sources, 17 cited a named firm's own website and 3 cited a directory, review or analyst site. For a regional contractor the realistic target is the location-specific question, which this study did not measure. Pages per service area and roof system, and coverage in the trade publications the engines cite, are the routes in. This is the work SourceRank AI does, described on the services page. The free site readiness check shows whether your site is structurally ready to be cited; it checks your site, it does not measure answers like the ones on this page. To see where your own firm stands in these answers, book a call.
Exactly what was measured
| Parameter | Value |
|---|---|
| Date | 10 October 2026, one run |
| Buyer questions | 12, each phrased as a buyer asking for a provider, varied by size, budget, situation and switching. Full list below |
| Answer engines | 5: ChatGPT, Gemini, Microsoft Copilot, Google AI Mode, Google AI Overviews |
| Engine cells | 60. One question on one engine |
| Answers measured | 50 of 60. The denominator for every share on this page. 2 Google searches showed no AI Overview. 8 Copilot answers were written for a buyer outside the US, a side effect of the third-party service we query Copilot through, and are excluded |
| Market | United States, English. Google AI Mode and AI Overviews were queried with a US location. ChatGPT, Gemini and Copilot were not given a location, the same as in our client measurement runs; Copilot answers that assumed a buyer abroad are excluded |
| Sources | Cited sources come from Gemini, Copilot, Google AI Mode and Google AI Overviews. ChatGPT's answers in this run came back without a machine-readable source list, so ChatGPT is not in the source tables |
| Firm extraction | One language model call per answer listed the firms the answer named as providers, excluding directories, publications, citation labels and tools. Names were normalised and aliases merged. A hand check of 20 answers across the study is reported on the hub page |
| Not measured | Location personalisation for the chat engines, logged-in or personalised sessions, run-to-run variation (this is a single run, and the same question asked again can return different firms), and model versions, which change without notice |
All 12 buyer questions
- Best commercial roofing companies in the US
- Which commercial roofing contractor should a multi-location retail chain use nationwide?
- Top national commercial roofing contractors for warehouses and industrial buildings
- Who are the largest commercial roofing companies in the United States?
- Best commercial roofing contractor for a flat roof replacement on an office building
- Which commercial roofers are best for TPO and single-ply roofing systems?
- Recommend a commercial roofing company for a property management portfolio
- Best commercial roof maintenance and repair companies for facility managers
- We had a bad experience with our roofer. Which commercial roofing contractors are most reliable?
- Top commercial roofing companies for metal roofs on industrial facilities
- Which roofing contractors handle commercial roof replacements for schools and hospitals?
- Best commercial roofing contractors for storm damage and insurance claims
Cite this research
Journalists, analysts and writers are welcome to quote, chart and republish the figures on this page. Please credit SourceRank AI and link to this page as the source. For the underlying data, a comment from Frederik Jakobsen or a category we have not covered, see the press page.
Suggested citation
SourceRank AI (2026). Which commercial roofing contractors do ChatGPT, Gemini and Google AI recommend? Measured 10 October 2026. https://sourcerankai.com/research/who-ai-recommends/commercial-roofing-contractors/
Link to copy
<a href="https://sourcerankai.com/research/who-ai-recommends/commercial-roofing-contractors/">Which commercial roofing contractors do ChatGPT, Gemini and Google AI recommend? (SourceRank AI, October 2026)</a>Where to go next
All 22 category studies
Who AI recommends across 22 B2B categories, with the cross-category findings and the full method.
What AI engines cite by industry
The source mix behind AI answers in ten industries, from our September 2026 measurement runs.
AEO for this industry
What we do for firms in this space, and the questions their buyers ask AI.
Common questions
Which commercial roofing contractors does ChatGPT recommend?
In this October 2026 run ChatGPT named Tecta America and CentiMark most often, in 6 of its 12 answers each. Across all five engines the most named were Tecta America (36 of 50 answers), CentiMark (34) and Nations Roof (33).
Do ChatGPT, Gemini and Google AI recommend the same commercial roofing contractors?
Partly. Tecta America was named by 5 of the 5 engines, and in 8 of the 12 questions at least two engines named the same firm first. Below the top few names the lists diverge: 94 of the 115 firms were named in only one answer.
How was this measured?
12 buyer questions asking for commercial roofing contractors were put once to ChatGPT, Gemini, Microsoft Copilot, Google AI Mode and Google AI Overviews on 10 October 2026, from a US English context. 50 answers were measured, and the firms each answer named as providers were extracted and counted once per answer. It is a single run, and the same question asked again can return different firms.