Top Roofing Materials for the PNW’s Unique Climate

Choosing the best roofing material for your home, from Texas to Alabama, should require some consideration. Wherever you live, the climate most likely makes some demands of your home in spite of whatever your style preferences. Here in the Pacific Northwest, constant rain is our biggest concern. So how do you choose the best roof to go over your family’s heads and maintain aesthetics? Good news, there are lots of stylish and practical options. Whether you’re looking to upgrade your roof or build a new home, let us help you to make the most informed decision–keeping up your comfort and your style.

Climate in the Pacific Northwest


The Pacific Northwest (PNW), experiences a range of weather patterns that affect roofing materials. With long, wet winters and frequent rain showers year-round, the region’s homes need roofs that can withstand moisture, prevent moss growth, and resist temperature changes. Homeowners need to choose materials that can handle both heavy rainfall and occasional snowfall, while also contributing to the home’s energy efficiency.

Best Roofing Materials for the Pacific Northwest


With those specific conditions in mind, let’s explore the best roofing materials for homeowners in the Pacific Northwest. Each of these materials offers unique benefits suited to the region’s weather.

Metal Roofing


Metal roofing is one of the top choices for homes in the Pacific Northwest. Known for its durability, metal roofs are resistant to heavy rain and wind, making them an ideal solution for homes in damp climates. Additionally, metal roofing offers great longevity, often lasting 50 years or more when properly installed.

Benefits of metal roofing:

  • Highly resistant to moisture and moss growth
  • Excellent durability in wind and heavy rainfall
  • Energy-efficient due to reflective properties, reducing cooling costs in warmer months
  • Low maintenance compared to other materials

Drawbacks of metal roofing:

  • Higher upfront cost
  • Can be noisy during heavy rain
  • Aesthetic limitations

Though metal roofs may have a higher upfront cost compared to other options, their longevity and minimal maintenance make them a smart long-term investment.

Asphalt Shingles


Asphalt shingles are one of the most common roofing options in Washington State. Their affordability and ease of installation make them a popular choice, and modern asphalt shingles are designed to resist moss and algae growth—key concerns in the Pacific Northwest.

Pros of asphalt shingles:

  • Cost-effective and widely available
  • Easy to install and replace
  • Newer models offer moss-resistant features
  • Suitable for a variety of architectural styles

Cons of asphalt shingles:

  • Shorter lifespan
  • Prone to moss and algae buildup
  • Moderate energy efficiency

While asphalt shingles can last between 20 and 30 years, they may require more maintenance over time compared to materials like metal or slate. However, they are a solid choice for homeowners looking for a balance between price and performance.

Cedar Shakes


Cedar shakes offer a natural, rustic aesthetic that blends beautifully with the landscapes of the PNW. While they can be a more expensive option, they provide excellent insulation and curb appeal.

Advantages of cedar shakes:

  • Natural beauty and distinctive appearance
  • High insulation value, helping to maintain home temperatures
  • Can last 30-40 years with proper maintenance

Disadvantages of cedar shakes:

  • Vulnerable to moisture damage
  • Frequent maintenance required
  • Not fire-resistant

However, cedar shakes are susceptible to moss, rot, and insect damage in damp climates, which means they require regular maintenance to ensure longevity. Proper installation and treatment with a water-resistant coating are crucial to preventing decay.

Slate Roofing


Slate roofs are another durable option, especially for homes looking for long-term solutions. Slate is a natural stone material that resists both moisture and mold, making it ideal for our wet Western Washington.

Reasons to choose slate roofing:

  • Extremely durable and long-lasting (up to 100 years)
  • Resistant to moisture, mold, and moss
  • Natural material with high aesthetic value

Issues with slate roofing:

  • Very expensive
  • Heavy material
  • Specialized installation required

The downside of slate roofing is its cost, both in terms of materials and the need for specialized installation. However, for homeowners looking for a premium option, slate can be a wise investment in the PNW.

Composite/Composition Shingles


Composite shingles (also known as composition shingles) are made from a blend of materials, including asphalt, fiberglass, and recycled products. They are designed to mimic the appearance of slate, tile, or wood, while offering superior performance in rainy climates.

Key benefits of composite shingles:

  • Resistant to moisture and moss
  • Lightweight and easy to install
  • Available in a variety of styles and colors
  • Affordable and durable (lasting up to 50 years)

Drawbacks of composite shingles:

  • Appearance may not match natural materials
  • Performance varies by quality
  • Susceptible to wind damage

This material offers homeowners the ability to achieve the look of high-end roofing materials without the hefty price tag, making it a popular choice for budget-conscious homeowners.

Concrete and Clay Tiles


Concrete tiles and clay tiles are also worth considering, especially for homes with a Mediterranean or Southwest architectural style. These materials are known for their durability and ability to withstand both moisture and temperature fluctuations.

Advantages of tile roofing:

  • Long lifespan (up to 50 years or more)
  • Resistant to fire, rot, and insect damage
  • Excellent for handling heavy rain

Disadvantages of tile roofing:

  • Heavy material
  • Cracking in freeze-thaw cycles
  • High cost

However, tile roofing can be heavier than other materials, so it’s important to ensure that your home’s structure can support the weight. Additionally, tiles may be prone to cracking in colder temperatures, so you should weigh the pros and cons carefully.

How to Choose the Right Roofing Material

When selecting the right roofing material for your home, consider the following factors:

  • Cost: Some materials, like metal and slate, have higher upfront costs but can save you money in the long run due to their durability and low maintenance.
  • Longevity: Metal, slate, and composite roofs can last 50 years or more, while asphalt shingles and cedar shakes may require replacement sooner.
  • Maintenance: If you’re looking for a low-maintenance option, metal or composite shingles may be the best choice for your home.
  • Energy Efficiency: Metal roofs are highly energy-efficient, as they reflect sunlight and reduce cooling costs. Asphalt shingles with reflective coatings can also improve energy efficiency.
  • Curb Appeal: A home’s roof can have a significant impact on curb appeal. Cedar shakes offer a natural, rustic look, while slate and metal provide a sleek, modern aesthetic.

Preventing Moss, Mold, and Algae on Pacific Northwest Roofs


While heavy rainfall is the primary concern in the PNW, winter weather can also pose challenges. Materials like metal roofing and slate roofs perform well under snow and ice, as they resist freeze-thaw cycles and do not crack easily. Homeowners should also consider the slope of their roof and ensure proper installation to avoid issues with ice dams.

Winter Weather Considerations for Roofing


One of the biggest challenges in the Pacific Northwest is keeping moss and algae off roofs. Certain roofing materials, like metal and composite shingles, naturally resist moss and algae growth. For homeowners with asphalt shingle roofs or cedar shakes, regular cleaning and the use of moss-resistant treatments can help prevent buildup.

How the Right Roof Can Save You Money


Investing in a high-quality roof can save money in the long run. Not only does quality reduce the need for frequent repairs, it often improves energy efficiency, and increases the home’s overall value. Durable materials like metal, slate, and composite shingles require less maintenance and can withstand the region’s demanding weather conditions for years.

FAQs on Pacific Northwest Roofing


What is the best roof material for a rainy climate?
Metal roofing is highly recommended due to its moisture resistance and durability. However, composite shingles and slate are also excellent choices for homes in damp climates.

Can tile roofs be damaged in winter?
Yes, certain tile roofs, particularly clay tiles, can be prone to cracking in freezing temperatures. Concrete tiles are more durable but can still be susceptible to damage if not properly installed.

Finishing Up


When it comes to roofing materials for the Pacific Northwest, it’s important to choose a material that can handle the region’s wet, windy, and sometimes snowy weather. Whether you’re looking at metal roofing, slate, or composite shingles, the right roof can protect your home, enhance energy efficiency, and add curb appeal.

Why Choose Chehalis Sheet Metal for Your Roofing Needs?


At Chehalis Sheet Metal, we’re more than just roofing experts—we’re your neighbors. We know how important it is to keep your home safe and comfortable, especially in the unpredictable Pacific Northwest weather. Our family has been helping local families like yours for years, making sure every roof is built to last through the rain, wind, and whatever else comes our way. If you’re thinking about a new roof or need a little help with repairs, give us a call.