roofing material

What Is The Best Roofing Material For Your Roof Slope?

If you are interested in purchasing a new roof, you may want to consider the slope of your roof when selecting a material. That’s because the performance of roofing materials is affected by the slope. For example, slate and tile are premium products due to their longevity and durability, but they are not the best option for every roof type. Continue reading to learn more about how the slope of your roof can affect your decision.

Low-Slope Roofs

Low-slope roofs, which are often referred to as flat roofs, require more care and concern to prevent water damage. Pooling and other water drainage issues are common but can be avoided if the roof is installed correctly using the proper roofing materials. We will discuss some of the best roofing materials for low-slope roofs below.

EPDM (Ethylene Propylene Diene Monomer)

EPDM is a synthetic rubber material that performs well on low-slope roofs. It is effective in preventing water damage and also stands up well to high heat. Manufacturers claim that EPDM roofs can last upwards of 50 years. However, EPDM roofs have not been used extensively until recent years, so they don’t yet have the track record of other roofing materials such as Built-Up Roofing (BUR).


Metal performs well on low-slope roofs and is an excellent option for homes because it is durable and aesthetically pleasing. While metal roofs require specific training and expertise to install correctly, the result is worth the extra effort and additional cost. That’s because metal roofs are among the most durable residential roofs available, improving the home’s appearance while increasing property value. In addition, metal roofs offer superior longevity, often lasting up to 70 years.

BUR (Built-Up Roofing)

BUR roofs are comprised of many layers of asphalt and felt. They are an industry standard for low-slope roofs and have proven effective on commercial and residential properties for decades. When installed correctly, BUR roofs form a weather-resistant membrane, locking out all water from your home.

Moderate Slope Roofs

Moderate Slope roofs are the most common type of residential roof. The moderate angle allows them to repel water and resist wind damage.


Metal roofs are a great option for moderate slopes because they have significant durability and longevity advantages. They are particularly resistant to fire, wind, and hail. In addition, they reflect sunlight, which makes them eco-friendly and reduces energy costs.


Clay tiles have been used on moderate slope roofs for centuries and have a proven ability to protect property from damage over the long term. They are aesthetically pleasing and also offer extreme durability and longevity. While the installation cost is higher than some other alternatives, the advantages of having a tile roof more than compensate for the higher upfront costs. In fact, many clay tile roofs are less expensive in the long run because they perform well for such a long time.

Steep Slope Roofs

Steep slope roofs are typically found in areas of the country with heavy precipitation. That’s because they are unrivaled in preventing water and snow damage. However, their extreme angle often makes them more susceptible to wind damage. As a result, steep slope roofs need to be highly durable to perform well over the long term.


Slate is perhaps the most durable of all roofing materials. It is non-absorbant and fully capable of standing up to heavy wind and rain. Slate is a dense, naturally occurring rock that is both tough and eco-friendly. The only downsides of slate involve cost and weight. Typically, slate roofs are more expensive to install due to higher material and labor costs. That being said, slate roofs commonly last 100 years or more, making the upfront costs seem like an excellent investment as time goes on.


Metal is another great option for steep-slope roofs, especially in areas with heavy snowfall. As mentioned previously, metal roofs are resistant to most weather-related damage. As a nice bonus, snow slides off metal roofs more easily than other materials, which helps to reduce the load on your roof. While metal is an ideal solution for steep-slope roofs, it can be more expensive to install, especially if you plan on installing copper or a similar specialty metal product.

No Matter The Slope Of Your Roof, CMR Has You Covered

Our team of roofing experts has installed thousands of roofs all across the country. We have installed just about every type of roof imaginable – everything from roofs made of grass to historic copper roof restorations. It doesn’t matter what kind of slope your roof has; CMR will help you find the perfect solution for your home. Contact us today to get started.