Are you considering asphalt shingles for your roof, but are unsure about the best roof pitch for asphalt shingles? Choosing the right materials for your roof’s pitch is crucial to ensure the longevity and effectiveness of your roofing system. In this comprehensive guide, we will explore the minimum roof pitch for asphalt shingles, and the reasons why it is essential to adhere to these guidelines.
We will also discuss alternative roofing materials suitable for low slope or flat roofs. By the end of this guide, you will have a clear understanding of the best roof pitch for asphalt shingles and alternative options for different roof types. First, let’s dive into each section and explore the best roof pitch for asphalt shingles and alternative roofing materials.
Table of Contents
– Understanding Roof Pitch
– Best Roof Pitch for Asphalt Shingles
– Why Can’t You Use Asphalt Shingles on Low Slope Roofs?
– Alternative Roofing Materials for Low Slope or Flat Roofs
– TPO Membrane Roof
– PVC Membrane Roof
– EPDM Membrane Roof
– Standing Seam Metal Roof
– Choose Elite Exteriors for Your Roofing Needs
– Best Roof Pitch for Asphalt Shingles: Conclusion
1. Understanding Roof Pitch
Before delving into the best roof pitch for asphalt shingles, it is essential to understand what roof pitch actually means. Roof pitch refers to the steepness or angle of your roof. It is typically represented as a ratio that indicates the number of vertical units (inches or feet) the roof rises for every 12 horizontal units (inches or feet) it extends.
Roof pitch plays a significant role in determining the suitable roofing materials for your project. Different roof pitches have different requirements and limitations when it comes to material selection. Now that we have a basic understanding of roof pitch, let’s explore the minimum roof pitch for asphalt shingles.
2. Best Roof Pitch for Asphalt Shingles
The best roof pitch for asphalt shingles is typically a 2:12 pitch minimum. This means that if your roof rises less than 2 inches (or feet) vertically for every 12 inches (or feet) horizontally, it is considered a low slope roof. Asphalt shingles are not recommended for low slope roofs due to their inability to handle sitting water.
The installation instructions provided by shingle manufacturers and building codes specify that asphalt shingles should not be installed on roofs with pitches below 2:12. Ignoring these guidelines may result in improper functioning of the shingles and voiding of the manufacturer’s warranty. It is crucial to adhere to these instructions to ensure the longevity and effectiveness of your roofing system.
3. Why Can’t You Use Asphalt Shingles on Low Slope Roofs?
The primary reason asphalt shingles cannot be used on low slope roofs is their inability to handle standing or sitting water. The design and installation requirements of asphalt shingles are not suitable for roofs with pitches below 2:12. Here are a few key reasons why asphalt shingles are not recommended for low slope roofs:
- Water Drainage: Low slope roofs have a reduced ability to drain water compared to steeper roofs. Asphalt shingles are not designed to handle standing water, and prolonged exposure to water can lead to leaks and other damage.
- Wind Uplift: Low slope roofs are more susceptible to wind uplift than steeper roofs. Asphalt shingles may not provide adequate resistance against wind uplift on roofs with pitches below 2:12, increasing the risk of shingle blow-offs.
- Ice and Snow Buildup: Low slope roofs are more prone to ice and snow buildup, which can result in water infiltration and damage to the roofing system. Asphalt shingles are not designed to withstand the weight and pressure exerted by ice and snow.
To ensure the durability and performance of your roofing system, it is crucial to select appropriate roofing materials for low slope roofs. We now know the best roof pitch for asphalt shingles, and why low slope roofs aren’t a great match. Next, we will explore alternative roofing materials suitable for low slope or flat roofs.
4. Alternative Roofing Materials for Low Slope or Flat Roofs
While low slope or flat roofs do not provide the best roof pitch for asphalt shingles, there are several alternative roofing materials that can provide effective protection and longevity. Here are four popular options for low slope or flat roofs:
TPO Membrane Roof
TPO roofing on commercial building, recently completed by Elite Exteriors
TPO (thermoplastic polyolefin) membrane roofing is a single-ply white membrane commonly used in both commercial and residential roofing. TPO roofs are highly durable, energy-efficient, and provide excellent resistance against UV radiation. The white color of TPO membranes reflects heat instead of absorbing it, making it an ideal choice for low slope roofs. With proper installation, TPO membrane roofs can last up to 25 years.
PVC Membrane Roof
Contractor installs a PVC membrane roof
PVC (polyvinyl chloride) membrane roofing is another single-ply white membrane option suitable for low slope or flat roofs. They offer similar benefits to TPO roofs, including durability, energy efficiency, and heat reflection. PVC membranes are slightly more flexible than TPO membranes and have been in use for a longer time. With proper installation, PVC membrane roofs can also last up to 25 years.
EPDM Membrane Roof
EPDM membrane roof during the installation process
EPDM (ethylene propylene diene monomer) membrane roofing is a synthetic rubber black membrane commonly used in commercial roofing. While primarily used for commercial properties, EPDM is also suitable for residential low slope roofs. EPDM roofs are highly durable and resistant to UV radiation. However, they are not recommended for roofs over living spaces due to their heat absorption properties. EPDM roofs can last up to 25 to 30 years when properly installed.
Standing Seam Metal Roof
Stunning standing seam metal roof
A standing seam metal roof is an excellent option for low slope or flat roofs due to its durability and aesthetic appeal. Standing seam metal roofs consist of metal panels that lock together at the seams, allowing for thermal expansion and contraction. Metal roofs offer superior longevity, with a lifespan of 30 years or more. They are available in various colors and finishes, providing versatility and customization options.
Each of these alternative roofing materials offers distinct advantages for low slope or flat roofs. Consider consulting a professional roofing contractor to determine the best material for your specific roof pitch and requirements.
5. Choose Elite Exteriors for Your Roofing Needs
Gorgeous new roof recently installed by Elite Exteriors
When it comes to roofing services, you need a reliable and experienced contractor to ensure the quality and longevity of your roof. Elite Exteriors has been helping homeowners make their dream roof a reality for years, providing exceptional roofing services and customer satisfaction.
With a team of skilled professionals, Elite Exteriors offers a wide range of roofing services including roof replacement, roof repair, storm damage roof replacement, and skylight installation. We are committed to delivering high-quality workmanship, using the best materials available, and offering lifetime warranties on select products.
Additionally, Elite Exteriors provides learning tools in the blog section of the website, offering valuable resources and articles to educate homeowners about roofing materials, maintenance tips, and more. Further, this commitment to customer education demonstrates our dedication to transparency and ensuring customers make informed decisions about their roofing projects.
Best Roof Pitch for Asphalt Shingles: Conclusion
Close-up view of newly installed asphalt shingles
Selecting the best roof pitch for asphalt shingles is crucial to ensure the longevity and effectiveness of your roofing system. While asphalt shingles are not suitable for low slope or flat roofs, alternative roofing materials such as TPO, PVC, EPDM, and standing seam metal offer excellent options for these roof types. Consulting with a professional roofing contractor can help you make informed decisions about your roofing project, and make the roof replacement process a breeze.
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Elite Exteriors is the Southeast’s premier residential and commercial resource for unparalleled service, superior craftsmanship, and incomparable quality – all backed by an unprecedented lifetime labor and materials warranty! If you’re in the market for roof repairs, a roof replacement, or solar panel installation, give Elite Exteriors a call today at 470-350-3024 for a FREE initial consultation and inspection, or fill out our online form for more information.