However, they are not all suitable for low-slope situations. Many different standing seam roof profiles look similar to one another on the surface, such as a snap-lock, mechanical lock, or fastener flange systems. Why It’s Important to Choose the Right Profile for a Low-Slope Roof That’s why we recommend sealant in the panel seams and an ice and water shield synthetic underlayment for low-slope systems under a 2/12 pitch. Hydrostatic – Hydrostatic roof systems refer to panel systems that are 3/12 or less, which are designed to hold water and drain slower. Hydrostatic systems have a higher potential to become submerged, which is why it’s critical to have better protection against water intrusion.Hydrokinetic systems are typically any roof pitch above a 3/12, making it a steep-slope roof. Hydrokinetic – When a roof system is hydrokinetic, it means that water is quickly shedding off the roof plane.Here are the definitions of these two terms and how it applies to the pitch or slope of a roof: When researching low and steep-slope roofs, you might come across the terms “hydrokinetic” and “hydrostatic” to describe a roof system. This method is intended to evaluate the water barrier (not water-shedding) of roof systems with a pitch below 3/12. Static water pressure is then applied to the outside face of the roof panel, which tests the roof’s ability as a water barrier. Low-slope metal roof systems are tested to ASTM E2140 standards, a water penetration test evaluating the resistance of roof panels’ vertical seams.ĭuring this test, the roof panel system is completely submerged under six inches of water for approximately six hours. Low-slope and steep-slope roofing systems have different industry-standard testing requirements. Testing of Low-Slope Metal Roofing Systems If you can’t reach your roof or feel uncomfortable climbing a ladder, don’t hesitate to ask your roofing contractor to do the measurement for you. For example, if your roof rose 8 inches for every 12 inches, the roof pitch is 8/12. Once you reach 12 inches, mark it, and then measure how far the roof rises perpendicular to the ground. Using a measuring device, move inward on the flat roof plane (parallel to the ground) 12 inches. To determine your roof pitch, you’ll need to measure how many inches your roof rises over every 12-inch run. If you’re unsure of what the slope/pitch of a roof structure is, it’s relatively easy to measure. At Sheffield Metals, we also recognize low slopes as 3/12 and below. Determining which panel is the right choice for the slope on your project will depend on the manufacturer’s minimum slope factor for that specific panel profile. Our profile recommendations for low-slope roofs.Ī low-slope roof is defined in the industry as a roof that has a pitch equal to 3/12 or less.Why choosing the right profile matters.That’s why we believe it’s important to share information about low-slope roof systems and what profiles we recommend to accommodate low-slope projects. One of our most significant priorities at Sheffield Metals is to make sure our customers are using the right system and profile based on the property’s specific attributes. However, it’s a critical component that - if ignored and not considered during the panel profile selection stage - can affect the overall roof performance. You might be asking yourself how slope can make that much of a difference. One of the most crucial building/home factors that will affect your product choice(s) is the slope of the roof.
FABRAL STANDING SEAM METAL ROOFING INSTALL
When you’re looking to install a standing seam metal roof on your property, there are several important design considerations to keep in mind.
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