A compiled reference of 45 verified statistics on commercial and low-slope roofing: the size of the market, the share held by TPO, EPDM, PVC, modified bitumen, built-up and metal systems. It covers how many years each system is expected to last, what replacement costs per square foot, how often roofs should be inspected, and what hail, wind and falls cost. Every figure is drawn from a named public source (Freedonia, NRCA, Roofing Contractor magazine, Verisk, Triple-I, IBHS, OSHA, EPA, manufacturer warranty terms and published cost guides) and independently checked before publishing. A closing section shows four famous roofing numbers that no primary source supports.
Key statistics
7 highlights from this report
Key statistics
Key takeaways
Commercial roofing is an 83 million square a year market that is mostly reroofing, dominated by single-ply membranes, and exposed to a hail peril that now drives more than $50 billion a year in storm losses. The numbers that matter to an owner are condition and age: roofs in poor visible condition cost insurers about 60 percent more, and we could not find a primary source behind the most repeated inspection statistics in the trade.
US commercial roofing demand totaled 83.2 million squares in 2024.
Severe storms caused $51 billion in insured losses in 2025; hail is up to 80 percent of those claims.
Roofs in moderate to poor condition carry about 60 percent higher loss costs.
37 percent of commercial roofers call TPO their chief product; PVC 28 percent, EPDM 24 percent.
EPDM's trade association puts expected service life at 38 years.
Roofing's fatal injury rate is 51.8 per 100,000 workers; 82 percent of deaths are falls.
Hail generated 35,812 commercial property claims in 2025, and $22.5 billion in structure repair costs across residential and commercial.
How we built this report
Every figure was compiled in September 2026 from named public sources and verified against the original before publishing.
- Compiled from primary sources
Trade association guidance and surveys (NRCA, Roofing Contractor and Western Roofing market surveys, the EPDM Roofing Association), market research summaries (Freedonia, IBISWorld), insurer and Verisk claims releases, Triple-I fact pages, an IBHS peer-reviewed hail study, OSHA fall data, manufacturer warranty terms (Carlisle, GAF) and 2026 cost guides (Fixr, HomeGuide).
- Only explicitly stated figures
We include only numbers a named source states directly, and attribute each inline at the point it appears. Manufacturer figures are labeled as manufacturer statements.
- Disagreements shown, not averaged
Where cost guides or surveys disagree (TPO service life, cost per square foot, TPO's market share), we show each source's number rather than blending them.
- Famous numbers traced
Four figures that circulate on contractor and vendor blogs could not be traced to any primary source. They are quarantined in the provenance section, not counted among the 45.
- Independent review
Written by one co-founder, reviewed by the other before publishing.
Scope caveat: market-share figures come from contractor and regional surveys, not a census of installed roofs. Cost and lifespan figures are guide-level national ranges; a specific roof's bid and service life depend on deck, insulation, attachment, climate and maintenance. Several insurance figures (roof condition, replacement cost, claim counts) are residential or all-property, because commercial-only roof claim data is not published; each is labeled. Confirm any figure against the named source before relying on it.
Roof systems side by side
Share of commercial contractors naming the system their chief product (Roofing Contractor, 2026), guide-level service life and installed cost (Fixr and HomeGuide, 2026), and the weakness each guide flags.
| System | Chief product sharecommercial contractors, 2025 | Typical service lifeFixr / HomeGuide | Installed cost per sq ftFixr / HomeGuide | Weakness the guides flagFixr 2026 |
|---|---|---|---|---|
| TPOthermoplastic polyolefin | 37%down from 49% a year earlier | 20 to 30 yrs10 to 25 yrs | $4 to $14$4 to $10 | Variability in quality among manufacturers can affect long-term durability. |
| PVCpolyvinyl chloride | 28%up from roughly 20% | 20 to 30 yrs20 to 30 yrs | $5 to $16$5 to $12 | Can become brittle over time in very cold climates if not properly formulated. |
| EPDMsynthetic rubber | 24%23% a year earlier | up to 30 yrs15 to 25 yrs; ERA claims 38 | $4 to $13$4 to $10 | Hard to repair; glued seams are prone to leaking. |
| Modified bitumenSBS / APP / self-adhered | n/a20.6% of Western low-slope market | about 20 yrs10 to 20 yrs | $4 to $8$4.00 to $7.50 | Does not last as long as BUR and is more expensive to repair. |
| Built-up (BUR)asphalt and felt plies | n/athird by revenue share after single-ply and metal | 15 to 30 yrs20 to 30 yrs | $4 to $10$3.50 to $7.50 | Requires regular maintenance and inspections to avoid leaks. |
| Metallow-slope panels | n/a15% of commercial contractor revenue | 50 to 70 yrs30 to 80 yrs | $4 to $16$5 to $16; copper to $30 | The most expensive option; needs more slope than other flat roof systems. |
Shares are the percent of surveyed commercial contractors naming the system their chief product category (Roofing Contractor's 2026 State of the Industry survey), not installed square footage; modified bitumen, BUR and metal were not offered as single-ply categories, so their cells carry the nearest published measure. Service life and cost ranges are quoted from Fixr's and HomeGuide's 2026 flat roof guides; the NRCA baseline for any new roof is about 20 years.
Commercial roofing, by the numbers
All 45 figures, grouped by theme, each from a named public source and independently verified.
Industry size and contractor mix
Commercial roofing is measured in squares (100 square feet each). According to The Freedonia Group's US commercial roofing study (2025) (freedoniagroup.com), demand totaled 83.2 million squares in 2024 and will grow less than 1 percent a year to 85.2 million squares in 2029; its earlier study summary on MarketResearch.com (marketresearch.com) put value-terms demand at $9.1 billion by 2027. The National Roofing Contractors Association (nrca.net) describes the whole US roofing industry as a $100 billion-plus sector with 1.1 million employees, and IBISWorld's roofing contractors report (2026) (ibisworld.com) sizes contractor revenue at $92.5 billion across 109,000 businesses. Roofing Contractor magazine's 2026 State of the Industry survey (roofingcontractor.com) shows where commercial revenue comes from: single-ply at 28 percent, metal at 15 percent, with TPO the chief product for 37 percent of commercial contractors.
Statistic 1
US commercial roofing demand totaled 83.2 million squares in 2024 and is projected to grow less than 1.0 percent a year to 85.2 million squares in 2029.
The Freedonia Group (2025)
Statistic 2
In value terms, US commercial roofing demand is expected to fall less than 1.0 percent a year through 2027 to $9.1 billion as product prices moderate after the 2021 and 2022 spikes.
The Freedonia Group study summary via MarketResearch.com (2023)
Statistic 3
The US roofing industry is a $100 billion-plus sector with an estimated 1.1 million employees.
National Roofing Contractors Association (2020)
Statistic 4
US roofing contractors are a $92.5 billion industry in 2026 with 109,000 businesses.
IBISWorld (2026)
Statistic 5
Single-ply membranes make up a 28 percent average share of commercial roofing contractor revenue, followed by metal at 15 percent.
Roofing Contractor, State of the Industry survey (2026)
Statistic 6
37 percent of commercial roofing contractors named TPO as their chief product category in 2025, followed by PVC at 28 percent and EPDM at 24 percent; a year earlier 49 percent named TPO.
Roofing Contractor, State of the Industry survey (2026)
Statistic 7
78 percent of roofing contractors expect sales volumes to rise in 2026 and 89 percent expect growth over the next three years.
Roofing Contractor, State of the Industry survey (2026)
Statistic 8
36 percent of commercial roofing contractors listed a lack of qualified workers as a business challenge in 2025, down from 61 percent who called it their top concern in 2024.
Roofing Contractor, commercial roofing trends survey (2025)
What this means: the market is flat in volume and shifting in mix. With reroofing taking 57 percent of Western low-slope work (Western Roofing) and unit demand barely growing, the money is in the existing roof stock, which makes condition documentation on roofs already in service the operative variable for owners, managers and insurers alike.
Roof system market share
No public census of installed commercial roofs exists, so market share comes from surveys. The 2015-2016 NRCA Market Survey, reproduced in IKO's commercial roofing systems guide (iko.com), put TPO at 40 percent of low-slope new construction and 30 percent of reroofing, EPDM at 22 and 26 percent, and modified bitumen at 12.4 and 14 percent. Western Roofing magazine's 2025 low-slope market survey (westernroofing.net) shows single-ply membranes at a combined 51.1 percent of the Western market and TPO alone at 36.7 percent, with reroofing taking 57 percent of the work. Freedonia's low-slope study (freedoniagroup.com) sizes that segment at $6 billion.
Statistic 9
The 2015-2016 NRCA Market Survey put TPO at 40 percent of the low-slope new construction market and 30 percent of reroofing, EPDM at 22 percent and 26 percent, and modified bitumen at 12.4 percent and 14 percent.
NRCA Market Survey, as reproduced in IKO's commercial roofing guide
Statistic 10
In the Western US, single-ply membranes (TPO, EPDM, PVC and CPE) hold a combined 51.1 percent of the low-slope roofing market, with TPO alone at 36.7 percent.
Western Roofing, low-slope market survey (2025)
Statistic 11
All modified bitumen systems (SBS, APP and self-adhered) account for 20.6 percent of the Western low-slope roofing market, with SBS modified alone at 9.9 percent.
Western Roofing, low-slope market survey (2025)
Statistic 12
Reroofing makes up a predicted 57 percent of the Western low-slope roofing market, repairs and maintenance 25 percent, and new construction 18 percent.
Western Roofing, low-slope market survey (2025)
Statistic 13
The US low-slope roofing market is a $6 billion market, with demand forecast to decline nearly 1.0 percent a year to 78 million squares in 2026 and the per-square price of roofing (excluding installation) expected to reach $82.81.
The Freedonia Group, low-slope roofing study (2023)
What this means: three different surveys, a decade apart and on different bases, all land TPO between 36 and 40 percent and single-ply above half the low-slope market. Any inspection program for a commercial portfolio is, in practice, mostly a single-ply seam and flashing program.
Service life and warranty terms by system
The National Roofing Contractors Association's roofing guidelines (nrca.net) give the baseline: most new roofs are designed for about 20 years of useful service, with actual life set by climate, design, material quality, application and maintenance. Fixr's 2026 flat roof guide (fixr.com) and HomeGuide's 2026 guide (homeguide.com) give overlapping but not identical ranges by system (both shown, not averaged). The EPDM Roofing Association (epdmroofs.org) claims a 38-year expected life for its membrane. Manufacturer warranty terms bracket the same range: Carlisle SynTec (carlislesyntec.com) offers TPO warranties up to 30 years and a 40-year material warranty on 90-mil EPDM. GAF (gaf.com) runs 10 to 35 years, with the longest terms conditioned on annual inspection and a full tear-off.
Statistic 14
Most new roofs are designed to provide useful service for about 20 years; slate, clay tile and certain metals can last longer.
National Roofing Contractors Association, roofing guidelines
Statistic 15
Fixr's 2026 flat roof guide gives typical service lives of 20 to 30 years for TPO, up to 30 years for EPDM, 20 to 30 years for PVC, 15 to 30 years for built-up roofing, around 20 years for modified bitumen, and 50 to 70 years for some metal roofing.
Fixr, flat roof cost guide (2026)
Statistic 16
HomeGuide's 2026 flat roof guide lists average lifespans of 20 to 30 years for built-up roofing, 15 to 25 for EPDM, 10 to 25 for TPO, 20 to 30 for PVC, 10 to 20 for modified bitumen, and 30 to 80 for metal.
HomeGuide, flat roof cost guide (2026)
Statistic 17
The EPDM Roofing Association states that properly designed, installed and maintained EPDM membranes have an expected service life of 38 years; its 2025 survey of 569 roofing professionals reported expected lives from about 25 years to more than 40.
EPDM Roofing Association (2025)
Statistic 18
Carlisle SynTec offers TPO membrane warranties up to 30 years (manufacturer statement).
Carlisle SynTec, product documentation
Statistic 19
Carlisle's 60-mil non-reinforced EPDM systems built to 30-year detailing qualify for 30-year warranties, and its 90-mil EPDM carries a 40-year non-prorated material warranty (manufacturer statement).
Carlisle SynTec (2024)
Statistic 20
GAF extends its Diamond Pledge NDL roof guarantee to a maximum of 35 years only if the roof is inspected annually by a GAF PlatinumElite commercial contractor (manufacturer terms).
GAF, commercial guarantee terms
Statistic 21
GAF single-ply guarantees run in 10, 15, 20, 25, 30 and 35 year terms, but only new, complete tear-off systems qualify for coverage longer than 20 years; recovered roofs cap at 20 years (manufacturer terms).
GAF, single-ply guarantee coverage matrix
Statistic 22
Manufacturer material warranties range from 20 years to a lifetime, while contractor workmanship warranties are commonly one or two years with no industry standard.
National Roofing Contractors Association, roofing guidelines
What this means: the warranty and the roof are not the same length. A one-to-two-year workmanship warranty sits under a 20-to-35-year material term, and the longest terms are earned with a documented annual inspection. For an owner, the inspection record is what keeps the long warranty alive.
Replacement and repair cost per square foot
Two 2026 cost guides bracket installed membrane prices. Fixr's flat roof guide (fixr.com) prices EPDM at $4 to $13 per square foot, TPO at $4 to $14 and PVC at $5 to $16, with built-up at $4 to $10 and modified bitumen at $4 to $8; its rubber roof guide adds labor-only attachment costs of $1.80 to $3 per square foot. HomeGuide's 2026 guide (homeguide.com) runs lower across the board (EPDM and TPO $4 to $10, PVC $5 to $12). Repairs are small by comparison: Fixr puts a flat roof repair at $300 to $1,100, or $2 to $10 per square foot. For residential rental roofs, which price very differently, see our rental roof repair cost statistics.
Statistic 23
Fixr's 2026 flat roof guide prices EPDM at $4 to $13 per square foot installed, TPO at $4 to $14, PVC at $5 to $16, built-up roofing at $4 to $10, modified bitumen at $4 to $8, and metal at $4 to $16 (up to $30 for copper).
Fixr, flat roof cost guide (2026)
Statistic 24
Fixr's rubber roof guide puts installed membrane costs at $4.25 to $13 per square foot for EPDM, $4.50 to $14 for TPO and $5.50 to $15 for PVC, with labor-only attachment costs of $1.80 to $2.50 per square foot ballasted and $2 to $3 mechanically attached.
Fixr, rubber roof cost guide
Statistic 25
HomeGuide's 2026 guide prices EPDM and TPO at $4 to $10 per square foot installed, PVC at $5 to $12, modified bitumen at $4.00 to $7.50, built-up roofing at $3.50 to $7.50, and flat metal at $5 to $16.
HomeGuide, flat roof cost guide (2026)
Statistic 26
A flat roof repair costs $300 to $1,100, with a national average of $700; small patches start around $150 and large repairs reach $4,000, or $2 to $10 per square foot (guide-level figures for residential-scale flat roofs).
Fixr, flat roof repair cost guide (2026)
Statistic 27
The average flat roof replacement costs $8,000, with most paying $4,000 to $21,000, plus $1,000 to $5,000 if old-roof removal is not in the estimate (guide-level figures for residential-scale flat roofs).
Fixr, flat roof cost guide (2026)
What this means: at $4 to $16 per square foot, a 50,000 square foot warehouse roof is a $200,000 to $800,000 capital item, Fixr's repair figures describe small residential flat roofs, but the ratio holds at commercial scale: a seam or flashing repair is priced in the hundreds to low thousands of dollars against a replacement priced in the hundreds of thousands.
Inspection frequency and roof condition
The twice-a-year rule has a real source. The National Roofing Contractors Association's roofing guidelines (nrca.net) say biannual inspections often uncover loose seams and deteriorated flashings before they leak, and place owner checks in the fall and spring. Insurers now price visible condition: Verisk's 2026 roof condition report (verisk.com) finds roofs in moderate to poor condition carry about 60 percent higher loss costs, that 38 percent of US residential roofs are in that band, and that roofing is around 30 percent of all line items in property claims estimates. Verisk's 2025 release adds that roofs with under four years of life left take 50 percent more storm damage.
Statistic 28
NRCA's guidance to building owners is that biannual inspections often uncover loose seams, deteriorated flashings and other visible signs of problems, with owner checks confined to the fall and spring.
National Roofing Contractors Association, roofing guidelines
Statistic 29
Roofs in visibly moderate to poor condition show about 60 percent higher loss costs than roofs in good or excellent condition, and 38 percent of US residential roofs fall in that moderate-to-poor band.
Verisk, roof condition report (2026)
Statistic 30
Roofing line items make up around 30 percent of all line items in US property claims estimates.
Verisk, roof condition report (2026)
Statistic 31
Roofs with less than four years of remaining life can suffer 50 percent more damage in severe weather than roofs with eight or more years left, and average residential roof lifespan is 15 years in hail-prone states versus 22 years in western states like Nevada, Arizona and Utah.
Verisk, roof claims cost release (2025)
What this means: condition, not age alone, is what the loss data keys on, and condition is only knowable from a documented look at the roof. Verisk's figures are residential, but they are the only published link between visible roof condition and claim cost, and the mechanism (deferred repairs become storm losses) is not specific to houses. Our water leak detection and insurance statistics cover what happens downstream of the roof.
Insurance claims from hail and wind
Hail is the roof peril. According to the Insurance Information Institute (2026) (iii.org), severe convective storms caused $51 billion in US insured losses in 2025, the third straight year above $50 billion; hail is up to 80 percent of those claims and roofs bear an estimated 70 to 90 percent of insured residential catastrophe losses. Verisk's 2025 release (verisk.com) put US roof repair and replacement cost value at nearly $31 billion in 2024, and its 2026 report shows average residential replacement at $17,631. Leader's Edge magazine (leadersedge.com), citing Verisk, counts 35,812 commercial property hail claims in 2025 alongside 835,058 homeowner claims. On the science side, IBHS researchers publishing in Frontiers in Materials (frontiersin.org) showed weathered, hail-exposed shingles are about ten times more susceptible to later damage than new ones.
Statistic 32
US roof repair and replacement cost value totaled nearly $31 billion in 2024, up nearly 30 percent since 2022, and roof line items made up more than a quarter of all residential claim value.
Verisk, roof claims cost release (2025)
Statistic 33
Non-catastrophic wind and hail residential roof claims rose from 17 percent to 25 percent of claims between 2022 and 2024.
Verisk, roof claims cost release (2025)
Statistic 34
Verisk recorded 835,058 homeowner hail claims and 35,812 commercial property hail claims in 2025, and the cost of repairing and replacing hail-damaged residential and commercial structures in the US reached $22.5 billion.
Leader's Edge, citing Verisk data (2026)
Statistic 35
Severe convective storms caused $51 billion in US insured losses in 2025, the third straight year above $50 billion; hail accounts for as much as 80 percent of those claims, with roofs bearing an estimated 70 to 90 percent of insured residential catastrophe losses.
Insurance Information Institute (2026)
Statistic 36
NOAA's Storm Prediction Center logged 5,432 US hail events of one inch or larger in 2025 versus 5,373 in 2024, with Texas (902) and Kansas (375) leading.
Insurance Information Institute, hail facts (2026)
Statistic 37
Wind and hail caused 40.7 percent of homeowners insurance losses in 2022; about one in 35 insured homes files a wind or hail claim each year, with an average severity of $13,511 over 2018 to 2022.
Insurance Information Institute, citing ISO
Statistic 38
Average US residential roof replacement cost reached $17,631 in 2025 and repair cost $4,699, up about 33 percent and 25 percent from the 2021 to 2024 average.
Verisk, roof condition report (2026)
Statistic 39
Asphalt shingles exposed to natural weathering and sub-severe hail were about ten times more susceptible to later hail damage than new shingles, and hailstones of one inch or less caused nearly 30 percent of the granule loss of a two-inch stone.
IBHS researchers, Frontiers in Materials (2025)
What this means: the storms that hurt are increasingly the small ones. Non-catastrophic wind and hail went from 17 to 25 percent of roof claims in two years, and IBHS shows sub-severe hail pre-damages a roof for the next storm. Dated post-storm photos of a commercial roof are the only way to separate that accumulated wear from a single insured event.
Rooftop safety and falls
Every inspection is a trip onto a roof, and roofing is one of the deadliest trades in the country. According to OSHA's fall prevention campaign (osha.gov), citing BLS data, 389 of the 1,034 construction deaths in 2024 were falls to a lower level. Roofing Contractor magazine's report on the BLS Census of Fatal Occupational Injuries (roofingcontractor.com) puts the roofing industry at 134 deaths in 2023, a rate of 51.8 per 100,000 full-time workers, with 82 percent from falls, slips or trips. Fall protection in construction (29 CFR 1926.501) tops OSHA's most-cited standards list.
Statistic 40
Falls are the leading cause of death in construction: 389 of the 1,034 US construction fatalities in 2024 were fatal falls to a lower level.
OSHA, fall prevention campaign, citing BLS (2025)
Statistic 41
The roofing industry recorded 134 workplace fatalities in 2023, a rate of 51.8 per 100,000 full-time equivalent workers and among the three deadliest civilian occupations; 110 of the 134 (82 percent) were falls, slips or trips.
Roofing Contractor, report on BLS Census of Fatal Occupational Injuries (2024)
Statistic 42
Fall protection general requirements (29 CFR 1926.501) is OSHA's most frequently cited standard, ahead of hazard communication and construction ladders.
OSHA, most frequently cited standards
What this means: a roof inspection program is also a fall-exposure program. Fewer, better-documented visits (and drone or fixed-camera capture where they can substitute for a walk) reduce the number of times someone is at the roof edge without reducing what the owner knows.
Cool roofs and energy
White TPO and PVC membranes double as cool roofs. The Cool Roof Rating Council (coolroofs.org) puts average cool-roof savings at 7 to 15 percent of total cooling costs, and cites California Energy Commission figures of 0.5 to 3.7 percent HVAC savings in medium offices and up to 9 percent in stand-alone retail. ENERGY STAR (energystar.gov), citing Lawrence Berkeley National Lab, says a white roof reflecting 80 percent of sunlight stays about 50 degrees F cooler than a grey roof reflecting 20 percent. The US EPA (epa.gov) reports peak cooling demand cuts of 11 to 27 percent.
Statistic 43
Average energy savings from a cool roof run 7 to 15 percent of total cooling costs, and cool exterior surfaces can cut annual HVAC energy use 0.5 to 3.7 percent in medium offices and up to 9 percent in stand-alone retail.
Cool Roof Rating Council, citing the California Energy Commission
Statistic 44
A clean white roof that reflects 80 percent of sunlight stays about 50 degrees F cooler on a summer afternoon than a grey roof reflecting 20 percent.
ENERGY STAR, citing Lawrence Berkeley National Lab
Statistic 45
Cool roofs can reduce peak cooling demand 11 to 27 percent in air-conditioned residential buildings and lower maximum indoor temperatures 2.2 to 5.9 degrees F in non-air-conditioned ones.
US Environmental Protection Agency
What this means: a reflective membrane only saves energy while it stays clean and intact. Ponding, dirt and patched seams erode the reflectance that justified the specification, which is one more thing a dated roof photo record documents. Our commercial HVAC inspection statistics cover the equipment sitting on top of that membrane.
Claims we could not verify
Four numbers are repeated across roofing contractor and facility-software pages. We traced each to its earliest fetchable appearance and then to the source it names. We could not trace any of them to a primary source. They are not counted among the 45 statistics above, and we recommend not citing them.
What gets repeated
"NRCA puts it at 65 to 75 percent. That's how many commercial roof leaks trace back to bad flashing or a poorly sealed penetration."
Roofing contractor blog, attributing the figure to NRCAWhat the source says
Nothing. NRCA's public roofing guidelines, press releases and market-index stories contain no leak-cause percentage, and NRCA's Market Survey measures product share, not why roofs leak. We could not find an insurer, consultant or association that publishes a flashing-and-penetration share of leaks. What NRCA does say is that biannual inspections often uncover loose seams and deteriorated flashings.
No primary source foundWhat gets repeated
"81% of roof failures at insured commercial properties occur on roofs with no documented inspection history in the preceding 24 months." And: "the average commercial roofing claim running $22,000 to $68,000 before business interruption."
Facility-maintenance software vendor's checklist page, March 2026, "per insurance claims data"What the source says
No insurer, dataset or year is named. We could not find either figure in any Verisk, ISO, Triple-I or IBHS publication we fetched. The only other page carrying the 24-month claim is a roofing contractor blog that cites the vendor page. Verisk does publish a condition-to-loss link (about 60 percent higher loss costs for roofs in moderate to poor condition), which is the verifiable version of the point.
No primary source foundWhat gets repeated
"According to the NRCA, a well-maintained commercial roof lasts approximately 21 years. A neglected one lasts around 13 years."
Roofing contractor blog, attributing the figures to NRCAWhat the source says
NRCA's roofing guidelines say most new roofs are designed to provide useful service for about 20 years and that maintenance is one of several factors that set actual life. No maintained-versus-neglected split, and no 21 or 13, appears on any fetchable NRCA page.
Not found at the named sourceWhat gets repeated
"According to the Roof Coatings Manufacturers Association, a 25-year commercial roof without adequate maintenance can generate $200,000 or more in additional repair costs over its shortened service life."
Same roofing contractor blog, attributing the figure to RCMAWhat the source says
A search of RCMA's site and directory listings surfaced no such statement. The figure has no roof size, system or time frame attached, which is usually the tell.
Not found at the named sourceCite this study
Academic or press use: copy a ready-made reference. RapidEye is the publisher.
RapidEye builds inspection intelligence for property operators; this reference is maintained as part of that work and is free to cite with attribution.
Quick FAQ
How often should a commercial roof be inspected?
Twice a year is the standard. NRCA's roofing guidelines say biannual inspections often uncover loose seams, deteriorated flashings and other visible problems, and that owner checks belong in the fall and spring. Manufacturers set annual as the floor: GAF extends its longest commercial guarantee to 35 years only if the roof is inspected annually by a GAF PlatinumElite contractor.
How much does a commercial flat roof cost per square foot?
Roughly $4 to $16 per square foot installed, depending on the membrane. Fixr's 2026 guide prices EPDM at $4 to $13, TPO at $4 to $14, PVC at $5 to $16, built-up roofing at $4 to $10 and modified bitumen at $4 to $8. HomeGuide's 2026 guide runs lower: EPDM and TPO $4 to $10, PVC $5 to $12, modified bitumen $4.00 to $7.50, built-up $3.50 to $7.50.
How long does a TPO roof last?
20 to 30 years on average, per Fixr's 2026 flat roof guide. HomeGuide's 2026 guide gives a wider 10 to 25 years. NRCA says most new roofs of any type are designed for about 20 years of useful service. EPDM's trade association claims a longer 38-year expected service life for properly designed and maintained EPDM.
What percent of commercial roof leaks come from flashing and penetrations?
No primary source we could find states a figure. The widely repeated claim that NRCA attributes 65 to 75 percent of commercial roof leaks to flashing and penetrations appears only on contractor blogs; NRCA's public pages contain no such number, and its Market Survey measures product share, not leak causes. NRCA does say biannual inspections often uncover loose seams and deteriorated flashings, which is the verifiable version of the point.
What share of the commercial roofing market is TPO?
37 percent of commercial roofing contractors named TPO their chief product category in Roofing Contractor's 2026 State of the Industry survey, ahead of PVC at 28 percent and EPDM at 24 percent. Western Roofing's 2025 survey puts TPO at 36.7 percent of the Western low-slope market. The 2015-2016 NRCA Market Survey, as reproduced by IKO, had TPO at 40 percent of low-slope new construction and 30 percent of reroofing.
Data sources
Every figure on this page traces to one of these named public sources, each checked against the original before publishing. Sources are named at the publisher level; exact documents are held in our verification records.
The Freedonia GroupUS commercial roofing and low-slope roofing industry studiesfreedoniagroup.com
MarketResearch.comFreedonia commercial roofing study summarymarketresearch.com
National Roofing Contractors AssociationRoofing guidelines resources and press statementsnrca.net
IBISWorldRoofing contractors industry reportibisworld.com
Roofing ContractorState of the Industry and commercial trends surveys; BLS fatality coverageroofingcontractor.com
IKOCommercial roofing systems guide reproducing NRCA Market Survey sharesiko.com
Western RoofingLow-slope roofing market surveywesternroofing.net
FixrFlat roof, rubber roof and flat roof repair cost guides, 2026fixr.com
HomeGuideFlat roof replacement cost guide, 2026homeguide.com
EPDM Roofing AssociationService life review and professional survey, 2025epdmroofs.org
GAFCommercial guarantee comparison and single-ply coverage matrixgaf.com
VeriskRoof condition and roof claims releases, 2025 and 2026verisk.com
Leader's EdgeHail loss feature citing Verisk claim counts, 2026leadersedge.com
Insurance Information InstituteSevere convective storm brief; hail and homeowners facts pagesiii.org
Frontiers in MaterialsIBHS peer-reviewed sub-severe hail study, 2025frontiersin.org
OSHAFall prevention campaign and most-cited standardsosha.gov
ENERGY STARCool roofs product pageenergystar.gov
US Environmental Protection AgencyHeat islands cool roofs pageepa.gov