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Compare the 3 main roof underlayment types - asphalt-saturated felt, synthetic, and self-adhering peel and stick. Learn which type works best for each roofing material, building code requirements, and how to choose the right underlayment for your project.

What Is Peel and Stick Roofing Underlayment? Peel and stick roofing underlayment – also known as self-adhering roofing underlayment – is a modified bitumen membrane with a factory-applied adhesive backing. Unlike traditional felt or synthetic roofing underlayment that requires mechanical fastening with cap nails or staples, peel and stick products bond directly to the roof [...]

Learn which underlayment works best under metal roofing. This contractor guide covers synthetic, felt, and self-adhering options for standing seam, corrugated, and metal shingle roofs.

Learn the key differences between ice and water shield and synthetic underlayment - when to use each, building code requirements, cost comparison, and how to use both together on every roofing project.

Tile roofs demand underlayment that can handle extreme heat, heavy weight, and a 50+ year lifespan. Learn about high-temp synthetic, self-adhering, and two-ply underlayment systems that match the durability of tile roofing.