The 3 Main Components of a Roof

The 3 Main Components of a Roof
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There are three main components to a roof. These components include the shingles, the gutters, and the rafters. Each of these components should be in good condition so that you can enjoy a beautiful roof that will last for many years to come.



Roofing sheathing is a vital component of any roof, particularly one containing asphalt shingles. It helps anchor heavy shingles, providing support and stability for the rest of the Roofers Barrow in Furness. The material also offers an additional layer of protection from water damage.

The material used in the construction of the sheathing can be plywood, OSB, or even a solid deck. Although all three provide the same basic function, they differ in strength and durability.

Plywood is the most popular choice for roofing sheathing due to its strength, cost, and environmental friendliness. However, it can be harder to install than OSB.

OSB is more affordable and lighter in weight. This makes it ideal for areas with heavy snowfall. But it doesn’t offer the same level of weatherproofing that the higher priced plywood provides.

One of the most important features of the roof sheathing is its thickness. Planks may range from one inch to five inches, though a thicker one is better for providing better load tolerance.


Rafters are a series of sloped structural members used to support the roof deck. They are typically made of wood, though other materials can also be used. These members are usually trimmed to a 2×10 or 2×12 size.

The three main components of a roof are rafters, trusses and purlins. Each provides a different type of protection.

Trusses are a more affordable option. They require no interior walls for load-bearing. A truss is an overarching roof section. It supports all other components of a roof. In some instances, the truss supports a chimney. This means the truss can also support a skylight.

Trusses are usually prefabricated and do not need to be constructed on site. Trusses are used in event centers and other buildings where attic space is not needed. If you are on a budget, you can choose to use a simple wood truss.

Purlins are pieces of timber that sit on the opposite side of the rafter boards and provide additional rigidity. Purlins also increase the span of the roof.


A roofing shingle is a type of building material used to protect the roof from damage from the weather. These materials protect against wind and UV light. They also provide a protective layer for your home and help it last longer.

There are many different types of shingles. Some are more expensive than others. It’s important to consider your needs and budget before selecting a type of shingle.

One of the most popular shingles is the architectural shingle, which has multiple layers of materials. The underlying asphalt is treated to make it more resistant to fire and UV light. Various fillers are added to improve flexibility and weathering.

Another type of shingle is the three-tab shingle. This type of shingle is the least expensive. However, it lacks dimension of the laminated shingles.

Architectural shingles are typically rated for winds between 80 mph and 120 mph. They have multiple layers of materials including a thermally activated asphalt sealant, a release film and a back surfacing.


The three main components of a roof are gutters, downspouts and fascia. Without them, your roof can leak and rot. A well-designed system will keep the rainwater off your home. Choosing the right size and type of gutter is vital.

Guttering is generally made of aluminum, stainless steel, or wood. Aluminum is the most expensive of these materials, but is known to be the best value for the money. Wood, on the other hand, is more budget-friendly.

Gutters are usually attached to the eaves of the roof. They channel water away from the house and keep debris from entering the house. However, older homes may not have gutters.

Downspouts are vertical pipes that carry water from the gutter to the ground. Downspouts are normally made of metal, although some homeowners choose to use plastic. If the downspout is not large enough to handle all the water, it can overflow and cause damage to the foundation of your home.