The Role of Underlayment in a Durable Roofing System

Why the Layer Under Your Shingles Matters More Than You Think

Shingles get most of the attention, but underlayment is the hidden layer that provides critical protection between your roof deck and shingles.

✅ What Underlayment Does

• Acts as a moisture barrier

• Provides extra leak protection

• Helps shingles lay flat for a smooth finish

✅ Types of Underlayment

• Felt: Traditional, affordable, but less durable

• Synthetic: Lightweight, tear-resistant, and long-lasting

• Ice & Water Shield: Provides premium protection in vulnerable areas like valleys and eaves

✅ Why It Matters

Without proper underlayment, even the best shingles can fail prematurely.

Final Thoughts

Underlayment may not be visible, but it’s one of the most important parts of your roof system.

✅ Need a roof built to last?
Twin Bridge Roofing & Construction installs premium underlayment with every new roof.

📞 (563) 655-4902 | 🌐 www.roofqc.com