Shingle Types and How Long Shingles Last
HUD's useful-life table lists 20 years[1] for an asphalt shingle roof, a planning figure for multifamily assets and not a measured life; a maker's warranty term is a different thing, and the types below are the names makers print.
Estimates for planning, not professional advice. Read the full notice.
Work it out for your own sizes
Count the bundles for your own roofExample to try: Length 40 ft, Width across the roof 30 ft, Pitch 6 in 12
Bundles per square, by the type the maker names
Bundles and shingles per square and the area one bundle covers, for shingles whose maker's own page or sheet names the type
| Shingle, by type | Bundles per square | Shingles per square | Area one bundle covers |
|---|---|---|---|
| Three-tab: Owens Corning Supreme | 3 (per Owens Corning's product page, checked Nov 12, 2026) | 65 (per Owens Corning's product page, checked Nov 12, 2026) | 33.327 ft² |
| Laminated: Owens Corning Oakridge | 3 (per Owens Corning's product page, checked Nov 12, 2026) | 64 (per Owens Corning's product page, checked Nov 12, 2026) | 32.8 ft² |
| Laminated: CertainTeed Landmark | 3 (per CertainTeed's data sheet, checked Nov 12, 2026) | 65 (per CertainTeed's data sheet, checked Nov 12, 2026) | 32.8 ft² |
Estimate for planning, from what you entered and the product data shown. Check product labels and your supplier before you buy.
Product names are trademarks of their owners. HoneyDoMath is not affiliated with, sponsored by or endorsed by these makers. Figures come from each maker's published sheets and are shown for information only.
The type in each row is the word the maker's page or sheet uses, quoted below. Each maker prints its own figures, so a type does not fix them. The area one bundle covers is the maker's printed coverage per square over its bundles per square, or one hundred square feet over the bundles where no coverage is printed.
Coverage of one bundle, where the maker prints it
Shingles per square, shingles per bundle and the coverage of one bundle for two IKO shingles, which print the coverage of a bundle and no bundles per square
| Shingle, by type | Shingles per square | Shingles per bundle | Area one bundle covers |
|---|---|---|---|
| Three-tab: IKO Marathon Plus AR | 65 | 21 | 32.3 ft² |
| Architectural: IKO Cambridge | 60 | 20 | 33 1/3 ft² |
Figures in the Shingles per square, Shingles per bundle and Area one bundle covers columns are per IKO's product page, checked Nov 12, 2026.
Product names are trademarks of their owners. HoneyDoMath is not affiliated with, sponsored by or endorsed by these makers. Figures come from each maker's published sheets and are shown for information only.
IKO prints the coverage of one bundle and no bundles per square, so none is shown here.
How long shingles last: one dated estimate
The only dated published estimate used on this site is HUD's estimated useful life table for capital needs assessments. Its row for an asphalt shingle roof, quoted:
Transcribed from row 3.3.4.1.1 of the Estimated Useful Life Table (page 8): Asphalt Shingle, 20 years.
It is an estimate for planning, not a measurement of any roof. The page lists the document and the date it was read under Sources.
What the makers call each type
Makers print the type in a product's name or description. In their words:
- Three-tab: Owens Corning calls its Supreme a three-tab shingle, and IKO heads its Marathon Plus AR page as a traditional three-tab shingle.
- Laminated: Owens Corning calls its Oakridge a laminated shingle, and CertainTeed's Landmark sheet says two pieces of the shingle are laminated together.
- Architectural: IKO heads its Cambridge page Cambridge Architectural Shingles.
Supreme® three-tab shingles are a basic, smart choice when you want to balance weather resistance and value.
Marathon Plus AR Traditional 3-Tab Shingles … Warranty Term: Limited 25 year
Oakridge® laminated shingles provide premium protection and impressive curb appeal.
Two pieces of the shingle are firmly laminated together in a special, tough asphaltic cement.
Cambridge Architectural Shingles
Warranty terms are not lifespans
A warranty term is what the maker's own limited warranty covers, under its own conditions; it is a different thing from how long a roof lasts. IKO's page lists a limited warranty term of 25 years[5] for Marathon Plus AR. CertainTeed's Landmark sheet says:
Landmark (and AR) shingles carry a lifetime limited, transferable warranty to the consumer against manufacturing defects when applied to stated CertainTeed application instructions for this product.
For a roof you are sizing, the bundles in a square, by shingle page lists every product's printed figures.
Questions
How long do shingles last?
HUD's useful-life table gives a figure for an asphalt shingle roof, shown at the top of the page with its source. It is a planning estimate for multifamily assets, not a measured life, and no other lifespan figure on this page has a dated source.
What is the difference between architectural and three-tab shingles?
In the makers' own words quoted above, a three-tab shingle is named as such, and a laminated shingle has two pieces laminated together. The tables give each product's printed bundles, shingles and coverage.
How many bundles per square does each type take?
Each maker prints its own figure, and the first table lists the bundles per square for each product named. Where a maker prints the coverage of one bundle instead, the second table shows it.
Calculate it for your project
Enter your own sizes to get the amount to buy or the layout figures, with the working shown and a page to print.
Try your own roof in the roofing calculatorSources (6)
-
CNA e-Tool Estimated Useful Life Table (opens in new tab), U.S. Department of Housing and Urban Development, undated; header 'Numbering by ASTM 2018-08 Outline'; PDF created May 30, 2017; page 8.
Code or government.
“Transcribed from row 3.3.4.1.1 of the Estimated Useful Life Table (page 8): Asphalt Shingle, 20 years.”
Checked November 12, 2026. Figures and codes change; verify with the source. Back to where this is used (Source 1) -
Supreme 3 Tab Shingles, product page (opens in new tab), Owens Corning, product page.
Manufacturer data.
“Supreme® three-tab shingles are a basic, smart choice when you want to balance weather resistance and value.”
“Shingles Per Square 65 Bundles Per Square 3 Coverage Per Square 99.98 sq. ft.”
Per Owens Corning's product page, checked Nov 12, 2026. Figures and codes change; verify with the source. Back to where this is used (Source 2) -
Oakridge Shingles, product page (opens in new tab), Owens Corning, product page.
Manufacturer data.
“Oakridge® laminated shingles provide premium protection and impressive curb appeal.”
“Nominal Size 13 1/4" x 39 3/8" Exposure 5 5/8" Shingles Per Square 64 Bundles Per Square 3 Coverage Per Square 98.4 sq. ft.”
Per Owens Corning's product page, checked Nov 12, 2026. Figures and codes change; verify with the source. Back to where this is used (Source 3) -
Technical Data Sheet, Landmark Shingles (opens in new tab), CertainTeed LLC, Landmark_TDS_CTRCOMM-015_2408_E, 08/24.
Manufacturer data.
“Two pieces of the shingle are firmly laminated together in a special, tough asphaltic cement.”
“Landmark (and AR) shingles carry a lifetime limited, transferable warranty to the consumer against manufacturing defects when applied to stated CertainTeed application instructions for this product.”
“Shingles per square 65 Bundles per square 3 Approximate Coverage per square 98.4 square feet”
Per CertainTeed's data sheet, checked Nov 12, 2026. Figures and codes change; verify with the source. Back to where this is used (Source 4) -
Marathon Plus AR Traditional 3-Tab Shingles, product page (opens in new tab), IKO, product page.
Manufacturer data.
“Marathon Plus AR Traditional 3-Tab Shingles … Warranty Term: Limited 25 year”
“Size 39 3/8" x 13 1/4" (1000 mm x 336 mm) Exposure 5 5/8" (143 mm) Coverage Per Package 32.3 sq. ft. (3.0 m²) Qty Per Pallet 60 bundles Shingles Per Square 65 Quantity Per Unit/Package 21 shingles”
Per IKO's product page, checked Nov 12, 2026. Figures and codes change; verify with the source. Back to where this is used (Source 5) -
Cambridge shingles, product page (opens in new tab), IKO, product page.
Manufacturer data.
“Cambridge Architectural Shingles”
“Dimensions (LxW) 40 7/8 inches x 13 3/4 inches (1,038 mm x 349 mm) Exposure 5 7/8 inches (149 mm) Coverage per Bundle 33 1/3 sq. ft. (3.1 sq.m) Bundles per Pallet 60 Shingles per Square 60 Shingles per Bundle 20”
Per IKO's product page, checked Nov 12, 2026. Figures and codes change; verify with the source. Back to where this is used (Source 6)
These are summaries of what the sources say, not professional advice. Codes and product data change. Check with your building department and the product label about your own project.