Roofing Materials 101
Rubberized Asphalt Shingles vs. Standard Asphalt Shingles
Standard asphalt shingles use oxidized asphalt. Rubberized or polymer-modified shingles blend in polymers like SBS to change flexibility, elasticity, and impact response. Neither technology is universally best — here's how Malarkey, GAF, and Owens Corning actually compare.
Neutral Product Comparison · Malarkey, GAF & Owens Corning · Middle Tennessee Roofing Experts
Quick Answer
What's the real difference between rubberized and standard asphalt shingles?
Standard asphalt shingles commonly use oxidized asphalt. Rubberized or polymer-modified shingles use polymers such as SBS to modify how the asphalt behaves — designed to affect flexibility, elasticity, tear strength, impact response, and granule adhesion. Malarkey uses its proprietary NEX® formulation across its Highlander, Vista, Legacy, and Windsor lines; GAF uses SBS-modified asphalt in selected products like Timberline AS II and Grand Sequoia AS, not its entire lineup; Owens Corning's Duration FLEX® is a verified current SBS-modified, Class 4 product.
Product performance still depends on the exact shingle, complete roof system, installation, roof design, ventilation, exposure, and maintenance — neither technology is universally best.
The Basics
What's the difference in the material itself?
Standard oxidized asphalt
Conventional asphalt shingles are made with oxidized asphalt — a process that hardens the asphalt to make it suitable for roofing use.
Rubberized / polymer-modified asphalt
These shingles blend asphalt with synthetic polymers — most commonly SBS — designed to give the material more flexibility and elasticity than conventional oxidized asphalt.
Side By Side
Standard vs. rubberized asphalt, at a glance
| Standard oxidized asphalt | Rubberized/polymer-modified (SBS) asphalt | |
|---|---|---|
| Flexibility/elasticity | Relatively rigid | Designed to be more flexible and elastic |
| Impact rating | Varies — some rated, some not | Product-specific; not automatically Class 4 |
| Relative price | Generally lower | Often positioned in upgraded tiers |
| Best fit | Budget-focused homeowners | Homeowners prioritizing impact resistance and flexibility |
Real Products, Real Brands
Which current products use polymer-modified asphalt?
| Category | Examples |
|---|---|
| Malarkey NEX® SBS-modified | Highlander®, Vista®, Legacy®, Windsor® (and applicable AR/Cool variants) |
| Selected GAF SBS-modified | Timberline® AS II, Grand Sequoia® AS |
| Owens Corning SBS-modified | TruDefinition® Duration FLEX® (verified Class 4) |
| Non-SBS impact technology | Owens Corning Duration STORM® (Class 4, polymer-based reinforcing mesh, non-SBS) |
| Products not currently marketed as SBS-modified | GAF Timberline® HDZ, Owens Corning Oakridge® |
Common Misconceptions
Does SBS always mean Class 4?
Not every polymer is SBS
SBS is one type of polymer modifier used in roofing asphalt. Product formulations vary by manufacturer, and homeowners should verify the exact technology used in the specific product.
Not every SBS shingle is Class 4
Highlander: SBS/NEX and Class 3. Vista/Legacy/Windsor: SBS/NEX and Class 4. Owens Corning Duration FLEX: SBS and Class 4. Owens Corning Duration STORM: non-SBS and Class 4 — showing that asphalt formulation and impact classification are separate product characteristics.
Non-SBS shingles can still hit Class 4
Owens Corning Duration STORM® is currently marketed as a non-SBS Class 4 shingle using a polymer-based reinforcing mesh.
What Rubberized Asphalt Doesn't Guarantee
Do rubberized shingles hold granules better or last longer?
Better granule retention and longer lifespan aren't universal claims.
Some manufacturers report improved granule adhesion for their polymer-modified lines — product-specific, manufacturer-reported comparisons, not a universal rule. No universal lifespan advantage can be claimed from asphalt formulation alone.
Possible Drawbacks
What are the trade-offs of choosing rubberized asphalt?
- Often positioned in upgraded product tiers
- Installed cost is product- and project-specific, not universally higher
- May have more limited product or color availability in some markets
- Not hail-proof
Middle Tennessee Relevance
Does this matter for Middle Tennessee roofs specifically?
Middle Tennessee roofs deal with summer heat, strong winds, hail, heavy rain, humidity, and seasonal temperature shifts. A polymer-modified shingle may be worth comparing when flexibility and impact classification are priorities for a specific home — not an automatic right choice for every roof or budget.
Get Started
Not sure which asphalt technology fits your roof?
A Mr. GoodRoof project manager can walk your roof and compare standard and polymer-modified options against your budget, priorities, and Middle Tennessee's weather.
- Free on-site roof evaluation
- Side-by-side product comparison for your home
- Certified installation across Malarkey's product lines
- Straightforward guidance — no pressure to upgrade
Get Your Free Roofing Estimate
Rubberized vs. Standard FAQs
Frequently asked questions
Are rubberized shingles always better than standard asphalt?
No — depends on budget, priorities, and the specific product.
Does SBS asphalt mean a shingle is Class 4?
No — impact rating is tested and assigned per product.
Do rubberized shingles guarantee a longer roof life?
No.
Which brands currently offer verified SBS or polymer-modified shingles?
Malarkey (NEX, core lineup), GAF (select products), Owens Corning (Duration FLEX).
Is polymer-modified asphalt worth the extra cost?
Depends on the homeowner's budget and priorities.
Keep Reading
Related roofing & shingle resources
Sources
Where this information comes from
- Malarkey NEX Polymer Modified Asphalt
- Malarkey Highlander, Vista, Legacy, and Windsor product pages
- GAF Timberline AS II
- GAF Grand Sequoia AS
- Owens Corning TruDefinition Duration FLEX
- Owens Corning Duration STORM
- DOE Building America
- IBHS (Insurance Institute for Business & Home Safety)
