
Identifying the 5 Key Components of a Roof
Sep 13, 2024
2 min read
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A well-constructed roof is crucial for protecting your home. At Fasto Roofing, we ensure your roof is built with the highest quality materials and expertise. Here are the five key components of a roof that work together to keep your home safe from the elements.

1. Plywood Roof Deck
Description
Function: The foundation of your roof that provides support and serves as a nail bed for roofing materials.
Materials: Typically a half-inch of plywood, installed with waterproofing material to ensure proper ventilation.
Types
Plank Decking: Long, rectangular wooden boards.
Sheet Decking: Flat sheets of wood, mainly plywood or oriented strand board (OSB).
2. Felt or Synthetic Underlayment
Description
Function: Acts as a moisture barrier, providing additional protection between the roof deck and shingles.
Types
Felt: Traditional type applied directly to the deck.
Synthetic: High-tech alternative made from synthetic materials, offering enhanced waterproofing.
Rafter Underlayment: Provides waterproofing for rafters.
Valley Underlayment: Protects against leaks from water pooling.
Eaves Membrane: Prevents ice dam formation.
3. Flashing
Description
Function: Thin strips of waterproof material installed around roof features to prevent water infiltration.
Types
Valley Flashing: Installed in the valley line of the roof.
Vent Pipe Flashing: Seals around vent openings.
Chimney Flashing: Prevents moisture at the chimney-roof junction.
Skylight Flashing: Installed between skylight glass and frame.
4. Shingles
Description
Function: The outermost layer that provides protection and enhances curb appeal.
Types
Shingles: Various materials like asphalt, wood, and composite.
Metal Roofing: Durable and long-lasting.
Tiles: Often made of clay or concrete.
Wooden or Metal Strips: Alternative roofing materials.