Figuring out what is the minimum slope for shingles

If you are planning a new backyard shed, a home addition, or just trying to fix a leaky porch roof, you've likely found yourself wondering what is the minimum slope for shingles before the whole thing becomes a soggy mess. It's one of those technical questions that doesn't seem important until you realize that water doesn't always behave the way you expect it to. If a roof is too flat, gravity stops being your friend, and that's when the real headaches begin. ...

February 23, 2026 · 6 min · Sascha Patterson