What kind of underlayment do you use?
What Type of Underlayment Do You Install Under Shingles?
If you’re replacing your roof, you might be wondering:
“What’s going under those shingles?”
At L&L Roofing & Construction, we take the underlayment just as seriously as the shingles. Why? Because it’s your roof’s first line of defense against moisture and leaks.
Let’s walk through the types of underlayment we use—and why it matters for your home in Gainesville and across North Georgia.
FAQ: What kind of underlayment do you use?
🧰 Our Go-To Underlayment Products
✅ Synthetic Underlayment
This is our standard underlayment on most homes. It’s:
Stronger and lighter than traditional felt
Resistant to tearing, even in high winds during installation
Water-resistant, not just water-shedding
Provides a clean, wrinkle-free surface for shingle installation
We choose high-performance synthetic brands that hold up over time—even if shingles blow off temporarily.
🧊 Ice & Water Shield (Peel & Stick)
We install this in the most vulnerable areas:
Valleys
Around chimneys and skylights
Eaves and low-slope transitions
Penetrations like vents or plumbing boots
This material bonds directly to the roof deck and seals around nails, which helps stop leaks in spots prone to pooling or ice dams (yes, even in Georgia winters).
🔥 High-Temp Underlayment (for Metal or Low-Slope Roofs)
When needed, especially under metal roofing or tile, we use a high-temp underlayment designed to:
Handle radiant heat
Resist adhesive breakdown
Maintain waterproofing long-term
We don’t cut corners—if your roof needs an upgrade in underlayment, we’ll tell you upfront.
Why Underlayment Matters
Even the best shingles can be compromised by:
Wind-driven rain
Debris penetration
Flashing leaks
Nail backouts
That’s why we treat underlayment as a critical part of your roofing system—not just a line item.
FAQs: Underlayment at L&L Roofing
Q: Do you use felt paper?
A: Not anymore. Synthetic underlayment has replaced felt on most modern installations due to its superior strength, weather resistance, and longevity.
Q: Do I need ice and water shield in Georgia?
A: Yes—in valleys, eaves, and penetrations. Even if we don’t get heavy snow, sudden cold snaps and driving rainstorms make it a smart investment.
Q: Is underlayment required by code?
A: Yes. Underlayment is required by the Georgia Residential Building Code and by every major shingle manufacturer to validate their warranty.
You Deserve a Roof That’s Built Right—Top to Bottom
At L&L Roofing, we don’t just talk about integrity—we build with it.
When you hire us, you’re getting:
Proper underlayment, tailored to your roof and slope
Code-compliant installs backed by manufacturer specs
Protection you can’t see—but will absolutely feel during the next storm
📞 Want a roof that’s done right from the deck up?
Call (770) 874-0372 or book your free inspection at www.llroofs.com
We serve homeowners across Gainesville, Dahlonega, Buford, and surrounding areas.
