Guides to Metal Roof Minimum Slope in Corrugated and Standing Seam Profiles

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Regardless of your building structure or the purpose of it, determining metal roof minimum slope matters if you use the material. There are many benefits when it comes to metal material for roofing.

You might be already aware if you use it yourself, such as providing durability, longevity, and water shedding. The visual aspect is also one of the reasons that make many people choose this exact material.

See Also : Metal Roofing Pros and Cons That You Should Know

Deciding the pitch of the roof is one of the key elements you have to consider when installing metal roof system. It depends on several factors such as roof profile, site location, building design, climate, and etc.

Below you’d find the specification of metal roof minimum slope that will be a helpful guide before you’re installing one.

Minimum Roof Pitch for Metal Building

Amongst many decisions one has to make when designing a metal building, determining metal roof minimum slope is one of them. Roof pitch is the degree of building’s roof slope; it determines how many inches the roof should rise for every 12 inches expanding on the horizontal side.

Some people prefer high pitches and some other choose low roof pitches – each has their own advantages and disadvantages.

Minimum Roof Pitch for Metal Building

However, in general, it is widely agreed that lower roof pitch is more cost-effective than the other. The reason is they definitely require less material, so the cost required is on the cheaper side. Lower pitch also decreases the total cubic sizes, therefore it is easier to cool down or heat up the building.

It is less visible as well, so the owner has little to no reason to spend money on colored panels. In conclusion, unless you desire for higher clearance of your building’s interior or want a particular exterior aesthetic, it might be far beneficial to opt for using metal roof minimum slope for your metal building.

The metal roof minimum slope doesn’t stray far from other building with different material. The minimum pitch is typically 3:12, meaning the roof should rise 3 inches for every 12 inches of horizontal foot.

The standard of lower pitch actually ranges between 1:12 to 5:12. Anything above that will require you to put out higher cost because they are already considered as higher pitch.

Minimum Pitch for Corrugated Metal Roof

Corrugated roofing is an amazing choice for conventional pitched roof, despite having the severe limitation about the pitch. The corrugated metal roof minimum slope is 5 degrees. It is the recommended slope as there is no guarantee if you opt for flatter pitch than this.

See Also : Corrugated Aluminum Panels

Minimum Pitch for Corrugated Metal Roof

Most buildings with metal roofing system are using corrugated roofing type. It is indeed the metal roof profile that is most used around the world, which can be traced even back to the 1820. Here are the few benefits from this roof profile:


Getting leaks when using roofing shingles system is a common complain to be heard. Properly installing corrugated roofing will prevent you from getting this issue and keep your building dry. The waterproof quality can be even enhanced by using coatings such as epoxy or ceramic.

Long durability

Despite being lightweight, corrugated metal roofs have ridges and grooves that contribute to their long-lasting life. They are not prone to corrosion, which guarantee the durability for the owner. It also has non-combustible property that makes it fireproof as well. It can also withstand extreme weather or climate conditions.

Easy to install

As it has been mentioned in the prior point, corrugated metal roof has lightweight quality, so naturally it doesn’t need much of material for structural support. The installation effort is automatically reduced and the energy can be spent more on the effective customization plan.

Minimum Pitch Metal Roof Snow

Metal roofing system, when properly designed and installed, is famous for its strong performance against harsh climate environments. There are several other factors that add up to this quality, certainly, such as proper slope, snow loading requirements, or the snow guard usage.

The standard practice if to have higher roof pitches in the places where it snows, storms, or rains heavily, compared to the places with less snows and rains.

Minimum Pitch Metal Roof Snow

In country with heavy snow and tough winter days, the metal roof minimum slope is recommended to be 1:12.

There are some opinions that standing seam metal roof minimum slope is ¼:12, but it increases the possibility of leaking on the few first days of snow arrival.  

Standing seam is the metal roof profile that has been gaining more popularity nowadays due to its clean and modern looks. These panel systems can be identified to the straight and sleek lines. It also comes in any colors to provide suitability for any building’s structure.

Doing research, paying attention and following common standards are the key to reap maximum benefits of using metal panel for your roofing system.