GAF vs. CertainTeed Shingles: Which Should You Choose?
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Get free quotesGAF vs. CertainTeed at a glance
| GAF (Timberline HDZ) | CertainTeed (Landmark) | |
|---|---|---|
| Signature technology | LayerLock; time-release algae-fighting granules | StreakFighter copper-based algae-resistant granules |
| Standard wind rating | 110 mph | 110 mph, 15-year wind warranty |
| Enhanced wind rating | 130 mph; unlimited via WindProven with qualifying accessories | Upgradeable — confirm current qualifying conditions with your contractor |
| Notable warranty feature | Golden Pledge top tier via Master Elite contractors | 10-year SureStart, full replacement value with no proration in early years |
| Market position | #1-selling shingle brand nationally | Long-established brand known for heavier-feeling architectural shingles |
Two different approaches to the same algae problem
Both brands tackle the same real problem — dark algae streaking on roofs in humid climates — with different chemistry. GAF uses a time-release additive embedded in the granules. CertainTeed's StreakFighter granules contain copper, which slowly releases copper ions with each rainfall to inhibit algae growth over the shingle's life — a different mechanism aimed at the same result. Neither approach has a clearly documented edge over the other in independent testing; both are considered effective algae-resistance systems by roofing professionals.
Pro tip from our network contractors
CertainTeed's SureStart warranty component is worth specifically asking about — it provides full replacement value (not prorated) for a defined early period, which is a distinct feature from the standard lifetime-limited warranty structure. Ask your contractor to explain exactly how SureStart interacts with the rest of the warranty term.
How to actually decide
Both are well-regarded, widely available architectural shingle lines. CertainTeed's Landmark has a reputation among some contractors for feeling like a heavier, more substantial shingle, while GAF's Timberline HDZ has the advantage of being the most widely stocked and installed shingle in the country, which can mean more contractors are certified at the top warranty tier for it in a given area. Ask local contractors which brand they're certified to install at the top tier — that often matters more than a small technical difference between the shingles themselves. See GAF vs. Owens Corning for the other major national comparison.
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Get free quotesFrequently asked questions
What's the difference between GAF and CertainTeed shingles?
Both are high-quality architectural shingle lines with similar 110 mph base wind ratings. They differ mainly in their algae-resistance technology (GAF's time-release additive vs. CertainTeed's copper-based StreakFighter granules) and specific warranty structures.
Is CertainTeed Landmark a good shingle?
Yes — Landmark is a long-established, well-regarded architectural shingle line, with some contractors noting it feels heavier than comparable competitor products, plus a distinct SureStart warranty component providing full replacement value in the early years.
What is CertainTeed's SureStart warranty?
SureStart is a 10-year component of CertainTeed's warranty that covers full replacement value (materials and often labor) with no proration during that period — worth asking your contractor how it interacts with the rest of the warranty term.
Which shingle brand is more widely available?
GAF is the best-selling shingle brand nationally, which can mean more local contractors are certified to install it at the top warranty tier — worth checking which brand your specific local contractors are certified for.
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