Many people think that picking a roofing material depends only on what you like or what you can afford. As such, people tend to neglect one make-or-break factor, which is the slope of the roof. This is known as the roof pitch.
Roof Pitch Explained
Pitch is the angle, slope or slant of your roof. It involves two numbers indicating a ratio. The ratio is a slash separating the numbers, such as 2/12 or 7/12, or colon, as in 2:12 or 7:12. Either way, the notation designates a ratio between a numerator and a denominator. The numerator represents the height of the roof while the denominator its length. The denominator is always 12. For instance, 5/12 means that for every 12 feet length, the roof changes 5 feet in vertical height.
Roof pitches of 1/12 up to 3/12 are categorized as shallow-sloped roofs. They include built-up roofing (BUR), torch-down, rubber membrane (EPDM) and standing seam metal. You can consult Treadlite Roofing, roof replacement experts if you have an inclination for these types of roofing.
Clay or Cement Tiles
These roofing materials can be set on a wide range of roof pitches. Roofs with pitches of 2.5/12 up to 4/12 usually need double underlayment. Particularly steep slopes above 19/12 are not recommended since tiles can rattle on them quite easily.
Asphalt (Composite) Shingles
Traditional 3-tab asphalt shingles are the most adaptable to many roof pitches. These shingles are appropriate for pitches from 4/12 all the way up to a 12/12. You can think of them as treading the middle road in roof pitch – not too flat nor too steep. For quality asphalt roofing, turn to the pros.
You can trust Treadlite Roofing for quality roof repairs. For over 20 years, we have been providing quality services for all kinds of roofs. We serve homeowners in and around Lumberton, NC. Call us today at (910) 758-2044.