How To Design Roof Lines

The modern shed roof.

How to design roof lines.

The internal roof lines are called valleys and the external roof lines are the hips as shown. When matched to the angle and proportions of other rooflines on the house your gable roof will add visual interest and character to the home making the addition look like an asset that belongs with the house. As you can see the 2 lines to the top left of the image are just drawn in approximately. Rather than a single slope a gable roof consists of two slopes that meet at a peak running down the middle of the roof.

It s tempting to cheat the slopes to make the design work in elevation on paper but the built result will fall flat. A cross gable roof is a design that consists of two or more gable roof ridges that intersect at an angle most commonly perpendicular to one another. Shed roofs are best for when you want to let an abundance of light and replace the sometimes impractical attic space with more interior volume. One way to double check that the roof slopes match is to make sure all of the valleys run at 45 to the eave and ridge.

We will determine there length in the next. The 3d drawing also differs very slightly from the line drawings including a false hip connecting the front porch to the bedroom hip to its right and some false roofs over the unseen shed roof and how the garage roof connects to the main roof and lack of crickets. Always match the slope of the roof between different sides of the same roof volume. This type of roof is often seen in buildings with a more complex layout for example homes with an attached garage.