Tile Roof Underlayment Replacement: What Homeowners Need to Know
Tile Roofing Underlayment Replacement: A Practical Guide
Tile roofs are known for lasting 50 years or more—but the underlayment beneath them usually doesn’t. In Colorado and Georgia, where freeze-thaw cycles, hail, and humidity take a toll, replacing tile roof underlayment at the right time is critical to protecting your home.
Here’s everything you need to know:
What Is Roof Underlayment?
Underlayment is the waterproof layer between your roof deck and the tile. It’s the last line of defense against moisture intrusion.
Common underlayment types for tile roofs:
Felt (30 lb): Traditional, affordable, shorter lifespan.
Synthetic: More durable, better UV resistance.
Self-adhered (ice & water shield): Offers best leak protection, especially in valleys and low-slope sections.
How Long Does Tile Roof Underlayment Last?
In Colorado, underlayment may last 20–25 years due to intense sun, hail, and freeze-thaw.
In Georgia, high humidity and heat can also degrade materials within 20–30 years.
The tiles themselves may outlast the underlayment by decades. That’s why replacing just the underlayment is a smart investment.
Signs Your Underlayment Needs Replacing
Watch for these warning signs:
Leaks in ceilings or attic
Curling or slipping tiles
Underlayment visible or deteriorating
Staining on fascia boards or soffits
Roof is 20+ years old and hasn’t been redone
The Underlayment Replacement Process
Tile removal – Carefully lift and stack tiles for re-use.
Deck inspection – Repair damaged plywood.
Install new underlayment – Often two layers of synthetic or peel-and-stick membrane.
Reinstall existing tiles – Replace any broken ones.
Flashing upgrades – Valleys, vents, and edge metal should be inspected or replaced.
How Much Does It Cost?
Costs vary by roof size, pitch, and materials. Here's a rough estimate:
Average cost: $7–$12 per square foot
2,000 sq ft roof (on average): $14,000–$24,000
Factors: tile type, roof complexity, code requirements, material quality
How Often Should You Replace Tile Roof Underlayment?
Every 20–30 years, or sooner if you notice signs of failure.
It’s smart to inspect your roof every 2–3 years and after major storms.
Is This Covered by Insurance?
Possibly—if underlayment damage is due to hail, wind, or storm-related tile shifts, it may qualify. An inspection by a HAAG-certified roofer helps determine this.
FAQ: Tile Roof Underlayment
What underlayment is best for tile roofs?
A high-temp, self-adhering modified bitumen membrane or synthetic underlayment rated for tile applications provides the best protection.
Can I reuse my tiles?
Yes, if the tiles are in good shape, they can be removed and reused—saving money and maintaining your home’s aesthetic.
Do I have to replace the tiles too?
No, underlayment replacement typically doesn’t require new tiles unless they're damaged or obsolete.
Need a trusted expert in Colorado or Georgia?
📞 Colorado: 303-276-2403
🌐 RoofNutsCO.com
📞 Georgia: 404-476-6851
🌐 RoofNutsGA.com
Let us help you protect what’s under your tile roof—before the leaks start. Want a free inspection? Call today.
