What is a normal roof pitch for a house?
Short answer. Most residential roofs fall between 4/12 and 9/12, which is considered a normal, conventional pitch. Ranch homes and porches often sit at the low end, and many two story homes, especially newer ones, have main roofs around 8/12 with steeper front gables.
Typical pitches by style
- Ranch and split level: commonly 4/12 to 6/12.
- Traditional two story: commonly 6/12 to 9/12.
- Newer suburban homes: often 8/12 to 10/12 on main roofs, with decorative front gables at 12/12 or steeper.
- Cape Cod and Tudor styles: steep, often 10/12 to 12/12 or more.
- Porches, sheds and additions: frequently 2/12 to 4/12.
- Modern and contemporary: low slope or very low pitch sections.
What a normal pitch looks like
A 6/12 roof rises 6 inches for every foot of horizontal distance, about 26.6 degrees, which reads as moderately sloped. An 8/12 is 33.7 degrees and looks clearly steep. A 12/12 is 45 degrees.
Why it matters
- Material choice: shingles need at least 2/12, with extra underlayment below 4/12.
- Cost: above roughly 7/12 or 8/12, steep slope labor and safety gear add cost, and steeper roofs have more square footage.
- Safety: homeowners should not walk anything much past 4/12 or 5/12.
In North Georgia subdivisions built in the last few decades, steep main roofs with even steeper decorative gables are common, which is one reason many local roofs carry steep slope charges on estimates. Most homes have more than one pitch. A roof measurement report lists each section separately; see how roofers measure a roof and roof replacement cost in Georgia.