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Anatomy of a Roofing System

Anatomy of a Roofing System

Understanding how your roof works can help you take better care of it. In today’s post, we walk you through the basic anatomy of a residential roofing system:

Anatomy of a Roofing System

The Main Part: Roof Structure

This is the first layer of any roofing system. It is made up of rafters and trusses and is designed to support all the other components layered above.

Beneath the Surface: Underlayment

The underlayment is composed of felt paper and synthetic materials to protect the roof deck from moisture damage, water penetration, hail damage and excess debris. This barrier also protects the roof deck when a roofing contractor works on the roof during installation or repairs.

The Drainage System: Gutters

Gutters direct rainwater away from your shingles to the downspout. The gutters are one of the most important parts of a roofing system because they prevent water damage to the roof, siding, landscape and your home’s foundation.

The Air Circulator: Soffit Vents

The soffit vents are typically located on the underside of the eaves and their role is to ventilate your roofing system. Proper air circulation is important because it prevents ice dam formation, shingle deterioration and other types of damage.

Understanding the anatomy of your roof can help you make smarter decisions when it comes to maintenance and repairs. Only roofing professionals, however, can safely provide inspection, repair and replacement services.

Northern Pacific Roofing, a leading local roofing company, can help you maintain the integrity of your roof through our excellent installation, repair and replacement services. You can call us at (888) 919-8539 for more information. You can also fill out our contact form to get a free project estimate. We serve homeowners in Petaluma, San Francisco and San Rafael, CA.