Modified bitumen roofing comes in two main types: APP (Atactic Polypropylene) and SBS (Styrene-Butadiene-Styrene). At L&L Roofing & Construction, we help property owners in Gainesville choose the right system based on climate, building needs, and budget.
APP Modified Bitumen
- Material Blend: Asphalt blended with plastic (polypropylene).
- Installation Method: Often heat-applied with a torch.
- Performance: Offers excellent UV resistance and durability.
- Best Use: Hot, sunny climates where UV exposure is the main concern.
SBS Modified Bitumen
- Material Blend: Asphalt blended with rubber (styrene-butadiene-styrene).
- Installation Method: Can be torch-applied, cold-applied, or self-adhered.
- Performance: More flexible, especially in cold weather, and resists cracking.
- Best Use: Areas with wide temperature swings or frequent freeze-thaw cycles.
Key Differences
- APP = Plasticized asphalt → strong UV resistance, less flexible.
- SBS = Rubberized asphalt → highly flexible, better in varying climates.
FAQ: What’s the Difference Between APP and SBS Modified Bitumen Membranes?
Q: Which one lasts longer?
A: Both APP and SBS can last 20–25 years. Longevity depends more on installation quality and maintenance than the type.
Q: Which is better for Gainesville, GA?
A: SBS is often recommended because it handles temperature swings and storms well, but APP can be ideal with added UV coatings.
Q: Are installation methods different?
A: APP is usually torch-applied, while SBS offers more flexibility with cold-applied and peel-and-stick systems.
Q: Do both types come with warranties?
A: Yes. Both APP and SBS systems are covered by manufacturer warranties when installed to spec.
At L&L Roofing & Construction, we believe in honesty, integrity, and doing the right thing. That means recommending APP or SBS only when it’s the right fit for your property—not a one-size-fits-all solution.
Call us today at (770) 874-0372 to schedule a consultation and learn which modified bitumen system is right for your Gainesville building.