What goes into a conventional roof found in New England? There may be more components than you think! Each part of your roof serves a specific purpose, and it all comes together to become a sturdy, durable, and effective means of protecting your home from the outdoors. With that said, we thought we’d provide you with a breakdown of the 8 primary parts of a roof and what they do.

Roof Deck

The roof deck is the base layer of the roof, usually made of plywood or oriented strand board (OSB). It provides structural support and serves as the foundation for roofing materials.

Underlayment

The underlayment is a protective layer installed directly on the roof deck. It acts as a moisture barrier, preventing water from infiltrating the roof and damaging the structure. Common underlayment materials include felt paper or synthetic materials like synthetic underlayment.

Roofing Material

The roofing material is the visible outer layer of the roof, providing protection against the elements. Common roofing materials include asphalt shingles, metal sheets, clay or concrete tiles, slate, wood shakes, or synthetic roofing materials. The choice of material depends on factors such as aesthetics, durability, climate, and budget.

Flashing

Flashing is a thin metal material, typically made of aluminum or galvanized steel, used to seal joints and transitions in the roof. It is installed around areas such as chimneys, vents, skylights, and valleys to prevent water leakage. Flashing ensures a watertight seal and helps direct water away from vulnerable areas.

A group of people painting a roof

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Roof Ventilation

Proper roof ventilation is crucial for maintaining a healthy and durable roof. It involves the intake and exhaust of air to regulate temperature and moisture levels in the attic space. Ventilation helps prevent the build-up of heat and humidity, reducing the risk of mold growth, ice dams, and premature roof deterioration.

Gutters and Downspouts

Gutters and downspouts play a vital role in managing rainwater runoff from the roof. Gutters are installed along the roof’s edges, collecting rainwater and directing it to downspouts, which carry the water away from the foundation of the building. This system helps prevent water damage to the roof, walls, and landscaping.

Ridge Vents and Soffits

Ridge vents are installed along the ridge of the roof, allowing hot air to escape from the attic. Soffits, on the other hand, are located under the eaves of the roof and provide intake ventilation. Together, ridge vents and soffits create a balanced airflow system, improving overall roof ventilation and energy efficiency.

Roof Insulation

While not a visible component, roof insulation plays a crucial role in maintaining energy efficiency and indoor comfort. It helps regulate temperature, reduce heat transfer, and prevent ice dams. Insulation materials commonly used in roofs include fiberglass, cellulose, spray foam, or rigid foam boards.

Each of these components is checked in an annual roof inspection, which means companies like ours can spot possible problems with individual components of your roof, repair them, and restore the durability of your entire roof with a simple repair before it becomes a larger problem.

Has it been a while since you’ve had someone look at your roof? Reach out to us today to schedule an inspection.