Roof lingo can be puzzling, but don’t worry, we’re here to make it crystal clear. Today, we’re demystifying the “4 pitch roof.” It’s like learning a secret code for roofs, and by the end of this blog, you’ll be in the know.

Understanding the 4 Pitch Roof:

Alright, let’s cut to the chase. A “4 pitch roof” is a term used to describe the slope or angle of a roof. It’s all about how steep or flat your roof is. We measure this in numbers, and in this case, the magic number is 4.

1. What Does the “4” Mean?

Imagine a square piece of paper. If you fold it diagonally once, you create two equal triangles. Each of these triangles has a “pitch” or slope of 45 degrees. This is where the “4” comes in – it represents a 4/12 pitch.

2. Breaking Down the Fraction:

Okay, let’s dive a bit deeper. The “4/12” means that for every 12 inches (or one foot) of horizontal distance on your roof, it rises or slopes up by 4 inches. It’s like climbing a small hill that’s not too steep but not completely flat either.

3. The Easy Math:

Now, picture a roof that’s 20 feet wide. With a 4/12 pitch, for every foot of horizontal run, your roof goes up 4 inches vertically. So, for every 12 inches (or one foot) across, it goes up 4 inches. If you do the math, that’s a 16.67% slope – not too gentle, not too steep.

Why Does It Matter?

Great question! The pitch of your roof matters for several reasons:

1. Water Shedding:

A steeper pitch helps water and snow slide off easily. It’s like having a slide for raindrops instead of letting them sit and potentially cause leaks.

2. Aesthetic Appeal:

The pitch affects the look of your home. Some styles, like cottages, often have steeper pitches, giving them a charming, traditional feel.

3. Space and Attics:

A lower pitch can mean more usable space inside your attic. It’s like having a cozy nook under your roof.


In the world of roofing, a 4 pitch roof is like the middle ground – not too flat, not too steep. It’s a practical choice for shedding water, and it can suit various architectural styles.

So, the next time someone talks about a 4 pitch roof, you can nod knowingly. You’ve cracked the roof code! Remember, it’s all about that 4/12 slope, making your roof just right for your home.


As a civil engineer and roofer, I love to share the experience that I have gained through the last couple of years. In the roofing industry, practical experience is a very crucial fact that can help you a lot. Hence, I want to help you with my blog.

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