Metal Roof

How to Determine the Metal Roof Slope?

Are you investing in a brand new metal roof installation?

For the most part, the minimum pitch for metal roof installations will depend on the type of metal material chosen and what method the material is being fastened. For the metal roof shingles, the minimum pitch for a panel that is non-soldered is three on twelve, this is a little higher for the minimum slope for an asphalt roof at 2:12.

From there, the minimum pitch for metal panels depends on the methods used to join the panels. Panels joined with an applied lap sealant can go virtually flat. For low slope metal roofs that are nearly flat, modified bitumen roofing, thermoset, and thermoplastic single-ply are accepted and recommended. 

Many homeowners wonder why there is a minimum pitch for metal roof applications. Due to the different factors that can happen over time that challenge the integrity of your roof if you are not prepared in advance. A steep slope roof is when the slope is greater than 3:12. Steeper slopes are ideal for areas that have higher snow loads and will also prevent the possibility of ponding water on the roof.

When it comes to residential construction, your roof is a visible part of the structure. Choosing a metal roof for residential construction involves choosing a panel profile that will be aesthetically pleasing. 

Read More: 4 Tips For Choosing A Roof Type

Factors Influencing Minimum Pitch

The minimum pitch for metal roofs primarily hinges on two main elements:

Residential Metal Roof

1. Type of Metal Material:

Different metal materials come with unique requirements. For example, metal roof shingles generally necessitate a pitch of 3:12 if they're non-soldered. Interestingly, this is a tad steeper than the 2:12 minimum pitch that asphalt roofs demand.

Fastening Methods:

The manner in which the panels are joined can also influence the roof's minimum slope. Panels that are conjoined with an applied lap sealant have the capability to be almost entirely flat. Nonetheless, for roofs that lie on the flatter side, specialists recommend using modified bitumen roofing, thermoset, or thermoplastic single-ply to ensure optimum performance.

2. The Significance of Minimum Pitch

Many homeowners might wonder about the necessity of adhering to a specific pitch. The reasons are multifaceted:

  • Roof Integrity: As the years roll by, various external factors can jeopardize a roof's integrity. A roof with an appropriate slope ensures that potential threats, such as excess water or hefty snow loads, are kept at bay.
  • Aesthetic Considerations: In the realm of residential construction, the roof significantly influences the home's overall visual appeal. Therefore, when opting for a metal roof, it's imperative to select a panel profile that harmonizes with the architectural aesthetics of the residence.
  • Challenges with Low Slope Roofs: Roofs that possess a low slope are often confronted with issues related to humidity, water drainage, and condensation accumulation, especially after inclement weather. This ensnared moisture can manifest into several problems:
  • Corrosion: Over time, moisture can lead to the corrosion of metals and electrical wirings, and even damage.
  • Mold and Decay: Moist environments are breeding grounds for mold, which can subsequently lead to wood decay, and deteriorate indoor air quality.
  • Water Ponding: This refers to the accumulation of water, forming 'ponds' on roofs with low slopes, which can pave the way for leaks and structural complications. Find out more about our roof leak repair services here.

Low Slope Metal Roofing Problems

Roofs that have a low slope, typically have problems with water movement, and condensation buildup. Moisture problems can cause a plethora of problems like corrosion to metals and wiring, not to mention molds that decay wood.

For the best results, the minimum slope for a metal roof should be around no less than three and a half on twelve. This will help the roof to perform at its best, metal roofs have many advantages and won’t give you a ton of problems.

If you suspect that your metal roof slope is too low, you should contact a professional roofer for an inspection.

Read More: Why Choose a Professional for Your Residential Roof?

Why Choose LOA for Metal Roofing Services?

Need an estimate for an emergency roof fix? With decades of combined experience in the roofing industry, LOA Construction is your trusted local roofing company in Austin, TX with extensive experiene with metal roofing slope, metal tiles/shingles, installation, replacement, repair, maintenance, and other services. Our professional roofers are skilled in helping you understand when you should be repairing or replacing your roof,

We service the cities of Austin, Houston, San Antonio, and Belton, Temple, and Killeen, and the surrounding areas in the state of Texas.

Ready for a quote for your metal roof? Contact the LOA team today! Be sure to also check out our metal roof gallery here.

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