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Asphalt vs synthetic composite shingles: which suits your roof?
Composite here means synthetic slate and shake made of polymers or rubber blends, not the laminated asphalt shingles some sellers also call composite.
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Written by HyreRoof Research Desk Primary-source research and fact checking
The verdict
Asphalt vs composite shingles is a choice between a covering the code writes rules for and one each maker proves on its own.
Asphalt shingles are covered by IRC R905.2 and fit almost any pitched roof from 2 in 12.
Synthetic composite tiles look like slate or shake and prove compliance through a product evaluation report, which sets their slope, fire class and install rules.
Choose asphalt for the widest choice of crews and repairs; choose composite when you want the slate or shake look without the weight of the real thing, and the product’s report fits your roof.
Which should you choose?
Choose asphalt if…
The roof is between 2 and 4 in 12. Composite reports we read start at 3 or 4 in 12.
You want any local crew to be able to repair the roof later.
You need a wide choice of wind and impact grades from many makers.
Choose composite if…
You want a slate or cedar shake look, for the house or the district.
Real slate is too heavy for the framing, and the composite product’s weight is checked against it.
A crew trained on that exact product will install it to its evaluation report.
Asphalt vs composite shingles side by side
Composite figures are from two evaluation reports we read in full. Other products differ, so ask for the report of the one you are quoted.
| Factor | Asphalt shingles | Synthetic composite |
|---|---|---|
| How it meets code | Written into the code: IRC R905.2 | Product evaluation report (ICC-ES ESR or UL ER) |
| Lowest slope | 2 in 12; double underlayment to 4 in 12 | 3 in 12 for some EcoStar profiles; 4 in 12 for Brava |
| Looks like | Flat or dimensional shingle | Slate or cedar shake |
| Weight | Varies by shingle | About 304 to 310 lb per 100 sq ft installed, Brava report |
| Published service life | About 20 years (NAHB survey) | We hold no neutral figure; read the maker’s warranty |
| Fire and impact class | On the wrapper; many impact-rated grades | Set by the tested assembly in the report; impact class is a separate listing |
| Who can repair it | Almost any roofing crew | A crew that stocks the same product |
Sources: 2021 IRC R905.2.2; ICC-ES ESR-4756; UL ER18920-02. See composite roofing for how to read those reports.
Cost over the life of the roof
Composite is usually the dearer covering. The real question is what you would otherwise buy: a shingle roof, or real slate or shake.
Against asphalt. Composite costs more to buy, and fewer crews install it. The case for it is the look, not the price.
Against slate or shake. If the alternative is real slate, composite may avoid framing work. Get that checked before you count it as a saving.
Repairs. A composite repair needs matching tiles of the same product, which may be harder to find years later. Ask whether spare bundles can be left with you.
Warranty. Compare what each maker’s warranty covers, what it excludes and whether it transfers. See manufacturer warranty.
No price ranges yet, on purpose. HyreRoof publishes a price range for a job only once it holds at least 12 dated, sourced quotes for it, and we do not hold them for this work yet.
Until then, use the factors above to read a quote, and price your own numbers in the roof cost calculator or set quotes side by side in the estimate comparison tool. The cost guide explains every line.
Which fits your climate?
Ratings matter more than the category. Ask for each one in writing.
Ask for a UL 2218 impact class on the exact product. It is a separate test and not every report covers it. See impact-resistant shingles.
The fire class belongs to the tested assembly in the report. Class A for one assembly does not mean Class A for every underlayment.
Asphalt shows its wind class on the wrapper. For composite, the report sets the fastening pattern; ask the crew to follow it.
Each report sets install temperature rules. Ask what the crew does on a cold day.
Verdict by home type
A starting point, not a ruling.
| Your house | Where it points |
|---|---|
| Typical house, fixed budget | Asphalt |
| Low-pitch roof, 2 to 4 in 12 | Asphalt, unless the composite report allows your slope |
| Historic look, framing not built for slate | Composite, with its weight checked |
| Hail-prone area | Whichever product shows a UL 2218 class; compare classes |
| Wildfire area | Either, with Class A confirmed for the whole assembly |
Your inquiry
Tell us about the work
Nothing goes to a roofer unless you agree.
A person reads it and replies by email, free and with no obligation. Matching is not live yet, so this is not a quote. If water is coming in now, call a local roofer directly and check their license first.
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Questions
Are architectural shingles composite shingles?
Are composite shingles allowed by code?
Do composite shingles last longer than asphalt?
Written and audited by
HyreRoof Research Desk
Primary-source research, data analysis and fact checking
We are a research desk, not a sales floor. We read the statute, the licensing board’s own pages, the code section or the federal dataset ourselves, and every figure we publish carries the document it came from and the date we retrieved it.
Where a number cannot be traced to a primary source, we publish the shorter page and say what we could not verify.
On our first study that rule removed a Minnesota exam statistic and left two states blank. Those gaps are on the page, not in a file somewhere.
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Sources & retrieval dates
General information. Codes, warranties and product data change and vary by location and product line; check the current documents and your building department. HyreRoof is not a roofing contractor and does not rank or sell roofing products.