Why Do Houses Have Sloped Roofs?

What Crafty Clover says in this video

Intro

Hey there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why do houses have sloped roofs?

The Big Idea

A sloped roof is a slide for rain and snow. Water runs off, instead of pooling and leaking through the ceiling. Slopes keep our houses dry!

Frame and Cover

Step one: the rafters meet, and boards cover the frame. Rafters meet at the top, called the ridge, and make a strong triangle. Then boards cover the triangle, and make a solid deck.

Shingles Overlap

Step two: the shingles overlap. Shingles overlap like fish scales, so drops can't sneak backward under the edge. Together, they make a water-shedding skin.

Rain Runs, Snow Slides

Step three: rain runs off, and snow slides. Gravity pulls rain downhill, to the edge of the roof, where it drops into a gutter. In snowy places, the pitch is steep, so heavy snow slides off before the beams sag.

A Closer Look

Let's take a closer look at a sloped roof! The ridge is the top peak. Rafters make the strong frame. Shingles overlap to keep water out. And the gutter and downspout carry the water away.

Quick Facts

Quick facts! Desert houses often use flat roofs, because rain is rare. Ice dams form when heat melts snow, and it refreezes at the cold edge. A 30-degree pitch is common in rainy places. Barns, churches, and birdhouses use the same slide-off idea.

Think Like a Scientist

Now, think like a scientist! Fold a paper into a steep tent, and another sheet flat. Sprinkle water on both. Which one keeps the table underneath drier? Why do you think that happened?

Outro

Sloped roofs keep our homes dry, thanks to gravity. What a smart slide! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!