If you need a roof replacement, you may be wondering what material you should use. You should know that not all materials work for all roofs. The roofing contractors at Kimoto Roofing in Honolulu, HI, explain that what many homeowners don’t understand is how the pitch of the roof dictates the type of shingles that can be used.

Determining Roof Pitch

In a nutshell, the pitch of the roof is its angle or slope. It’s determined by measuring the vertical rise in inches per every 12 inches across. Roof pitch can vary from nearly flat with a ratio of 1:12 to a steep 12:12 or higher. Most residential roofing has slopes ranging between 4:12 and 9:12, while commercial roofs are more likely to be nearly flat at 2:12 or have a low slope between 2:12 and 4:12. Although you could determine your roof’s pitch on your own, it’s usually best to have a roofing contractor take these measurements to ensure accuracy.

Materials for Low-Pitch Roofs

Because flat and low-pitch roofs don’t drain as well as higher-pitch roofs, they require different materials to prevent structural damage and leaks. If your roofing contractor determines your roof slope is less than 4:12, they may recommend a combination of asphalt roll roofing and synthetic material. This will create a water-resistant seal that will protect both the roof structure and your personal belongings from water damage during heavy rains.

Materials for Conventional Roofs

If your roof slope is between 4:12 and 9:12, you have what roofing contractors call a conventional pitch. This is the most common pitch in residential roofing, and its greater visibility requires more aesthetic roofing materials than asphalt roll. The most popular option for conventional roofs is asphalt shingles. They’re available in an array of colors so you can choose an option that fits with the rest of your home’s exterior. Because conventional pitch drains water well, there’s less concern about leaks and structural damage.

Although you can do advanced research about various roofing materials to get an idea of what you want for your roof replacement, keep in mind that what you want may not be possible with your particular roof slope. To ensure you don’t use asphalt shingles when asphalt roll is needed and vice versa, consult with an experienced roofing contractor like Kimoto Roofing. They’ll determine your roof pitch for you and discuss the options available based on those measurements. Call them today at (808) 203-4216 for an estimate or visit them online to learn more.