7 Common Roof Types: Complete Guide to Shapes, Styles & Materials

When homeowners ask, "What kind of roof do I have?" they're often referring to two different things:

• The roof shape (gable, hip, flat, shed, etc.)

• The roofing material (asphalt shingles, metal, slate, cedar shake, composite tile, etc.)

  
  

Although people commonly use the term "roof type" to describe both, roof shape and roof material are two separate parts of a roofing system. The shape affects how your roof handles rain, wind, and snow, while the material determines durability, maintenance requirements, appearance, and lifespan.

Understanding the difference makes it much easier to choose the right roofing system, especially in the Pacific Northwest, where heavy rainfall and moisture demand materials and designs that effectively shed water and resist moss growth.

Roof Shapes

Your roof's shape determines how efficiently it drains water, resists wind and complements your home's architecture.

Gable Roof

Definition: A gable roof features two sloping sides that meet at a ridge, creating a triangular shape.

It's one of the most common residential roof styles in the United States because it efficiently sheds rain and snow.

Advantages

• Excellent water runoff

• Affordable construction

• Good attic ventilation

• Simple maintenance

Considerations

Strong windstorms can place pressure on the gable ends, making proper framing and installation especially important.

Pacific Northwest Performance:

Excellent for Western Washington because the steep slope helps move rainwater off the roof quickly.

Hip Roof

Definition: A hip roof slopes downward on all four sides. This design provides outstanding stability during high winds.

Advantages

• Excellent wind resistance

• Strong structural stability

• Efficient drainage

• Attractive appearance

Considerations

The more complex framing typically increases construction costs. Pacific Northwest Performance:

An excellent choice for homes exposed to coastal winds while still providing effective rain runoff.

Gambrel Roof

Definition: A gambrel roof has two slopes on each side, creating additional attic or loft space.

Often associated with barns and farmhouse-style homes.

Advantages

• Large usable attic

• Distinctive appearance

• Efficient use of interior space

Considerations

Requires careful flashing and waterproofing where roof angles change.

Mansard Roof

Definition: A mansard roof features four sides with steep lower slopes and flatter upper sections.

Often used to maximize upper-story living space.

Advantages

• Expanded living space

• Elegant architectural style

• Flexible future renovations

Considerations

Its complex design requires regular maintenance to prevent moisture intrusion.

Flat or Low-Slope Roof

Definition: Flat roofs have very little slope and rely on waterproof membranes rather than gravity alone for drainage.

Advantages

• Modern appearance

• Usable rooftop space

• Easier equipment installation

Considerations

Drainage systems require regular inspection and maintenance.

Is a Flat Roof a Bad Idea in a Rainy Climate?

Not necessarily, but it requires the right waterproofing system.

Flat roofs perform well when professionally designed with proper drainage, high-quality membranes, and regular maintenance. Poor drainage, not the flat design itself, is what usually causes problems.

Shed Roof

Definition: A shed roof consists of one continuous sloping plane. Common on modern homes, additions, and contemporary architecture.

Advantages

• Simple construction

• Excellent drainage

• Energy-efficient design

• Ideal for large windows

Considerations

Proper orientation is important for managing sun exposure and rain runoff.

Butterfly Roof

Definition: A butterfly roof slopes inward toward a central valley. Popular in modern architectural designs.

Advantages

• Dramatic appearance

• Rainwater collection

• Large window opportunities

Considerations

The central drainage system must be carefully designed to prevent water accumulation.

Roofing Materials

While roof shape determines drainage, roofing materials determine how well your roof withstands weather, moisture, UV exposure, and aging.

Asphalt Shingles

Definition: Asphalt shingles are the most common residential roofing material in North America.

Advantages

• Affordable

• Wide variety of colors

• Easy repairs

• Reliable performance

Lifespan

20–35 years depending on product quality.

Pacific Northwest Performance

Architectural shingles perform well in Western Washington when combined with proper attic ventilation and routine moss prevention.

Metal (Steel) Roofing

Definition: Steel roofing uses interlocking metal panels that provide exceptional durability and weather resistance.

Advantages

• Excellent rain shedding

• Outstanding longevity

• Fire resistant

• Low maintenance

• Highly wind resistant

Lifespan

40–70+ years.

Pacific Northwest Performance

Steel roofing performs exceptionally well in wet climates because its smooth surface sheds rain quickly and discourages moss accumulation.

Composite Roofing Tiles (Brava)

Definition: Composite roofing tiles replicate the appearance of cedar shake, slate, or Spanish tile using engineered materials.

Advantages

• Lightweight

• Low maintenance

• Highly durable

• Excellent curb appeal

• Resistant to moisture and insects

Lifespan

50+ years.

Pacific Northwest Performance

Composite roofing offers the beauty of natural materials without many of the maintenance concerns associated with wood.

Natural Slate

Definition: Slate roofing uses natural stone tiles known for exceptional longevity.

Advantages

• Extremely durable

• Elegant appearance

• Fire resistant

• Low water absorption

Lifespan

75–100+ years.

Pacific Northwest Performance

Excellent moisture resistance but requires a structure capable of supporting its significant weight.

Cedar Shake

Definition: Cedar shake roofing is made from split natural cedar wood.

Advantages

• Natural appearance

• Good insulation

• Traditional Northwest aesthetic

Considerations

Requires regular maintenance to control moss and moisture.

Pacific Northwest Performance

While beautiful, cedar roofs require consistent cleaning and maintenance due to Western Washington's wet climate.

Which Roof Type Makes the Most Sense in the Pacific Northwest?

For Western Washington homeowners, the best roofing system combines a roof shape that efficiently sheds rain with a material designed to withstand long-term moisture exposure.

Popular combinations include:

The ideal roofing system depends on your home's architecture, budget, maintenance preferences, and local weather exposure.

Frequently Asked Questions

What are the different types of roofs?

Roof "types" typically refer to either roof shapes (such as gable, hip, flat, shed, gambrel, mansard, and butterfly) or roofing materials (such as asphalt shingles, metal, slate, cedar shake, and composite tile).

What's the difference between a roof shape and a roof material?

A roof shape describes the structure and slope of the roof, while the roofing material is the protective covering installed on top of that structure.

What roof shape is best for rain?

Steep-sloped roofs like gable and hip roofs generally provide the best drainage because they allow rainwater to flow off quickly.

Is a flat roof a bad idea in a rainy climate?

No. Flat roofs can perform well when they include proper waterproof membranes, drainage systems, and routine maintenance.

What roofing material lasts the longest?

Natural slate typically lasts the longest, often exceeding 100 years. Metal roofing and premium composite roofing products also provide excellent long-term durability.